AI Trajectory

null

{
  "EnableConfigs": null,
  "FocusSymbols": [],
  "KMSANReasoning": "",
  "NeedsKMSAN": false,
  "Reasoning": "The patch modifies m88e1318_set_wol() in drivers/net/phy/marvell.c, which handles Wake-on-LAN register configuration for discrete Marvell Alaska 88E1318S and 88E1510 Ethernet PHY transceivers. These PHY transceivers are physical ASICs connected via MDIO and are not emulated in standard QEMU or GCE virtualized environments, making this code structurally unreachable for fuzzing.",
  "WorthFuzzing": false
}

null

{
  "PatchDiff": "commit dbdf8762dfeb788059c96e571d8ea3ecee631151\nAuthor: syz-cluster \u003ctriage@syzkaller.com\u003e\nDate:   Sun Sep 13 21:25:27 2026 +0000\n\n    syz-cluster: applied patch under review\n\ndiff --git a/drivers/net/phy/marvell.c b/drivers/net/phy/marvell.c\nindex f71cffa884062..6f7c190880f2e 100644\n--- a/drivers/net/phy/marvell.c\n+++ b/drivers/net/phy/marvell.c\n@@ -2074,6 +2074,35 @@ static int m88e1318_set_wol(struct phy_device *phydev,\n \t\t\tgoto error;\n \t}\n \n+\tif (!(wol-\u003ewolopts \u0026 (WAKE_MAGIC | WAKE_PHY))) {\n+\t\t/* Fully disabled: undo the WoL interrupt setup done above,\n+\t\t * so a later re-enable starts from a clean state.\n+\t\t */\n+\t\terr = marvell_write_page(phydev, MII_MARVELL_COPPER_PAGE);\n+\t\tif (err \u003c 0)\n+\t\t\tgoto error;\n+\n+\t\terr = __phy_clear_bits(phydev, MII_88E1318S_PHY_CSIER,\n+\t\t\t\t       MII_88E1318S_PHY_CSIER_WOL_EIE);\n+\t\tif (err \u003c 0)\n+\t\t\tgoto error;\n+\n+\t\terr = marvell_write_page(phydev, MII_MARVELL_LED_PAGE);\n+\t\tif (err \u003c 0)\n+\t\t\tgoto error;\n+\n+\t\terr = __phy_modify(phydev, MII_88E1318S_PHY_LED_TCR,\n+\t\t\t\t   MII_88E1318S_PHY_LED_TCR_FORCE_INT |\n+\t\t\t\t   MII_88E1318S_PHY_LED_TCR_INTn_ENABLE |\n+\t\t\t\t   MII_88E1318S_PHY_LED_TCR_INT_ACTIVE_LOW,\n+\t\t\t\t   phy_interrupt_is_valid(phydev) ?\n+\t\t\t\t\tMII_88E1318S_PHY_LED_TCR_INTn_ENABLE |\n+\t\t\t\t\tMII_88E1318S_PHY_LED_TCR_INT_ACTIVE_LOW :\n+\t\t\t\t\t0);\n+\t\tif (err \u003c 0)\n+\t\t\tgoto error;\n+\t}\n+\n error:\n \treturn phy_restore_page(phydev, oldpage, err);\n }\n"
}

core

null

{
  "EnableConfigs": null,
  "FocusSymbols": [],
  "Reasoning": "The patch modifies m88e1318_set_wol() in drivers/net/phy/marvell.c, which handles Wake-on-LAN register configuration for discrete Marvell Alaska 88E1318S and 88E1510 Ethernet PHY transceivers. These PHY transceivers are physical ASICs connected via MDIO and are not emulated in standard QEMU or GCE virtualized environments, making this code structurally unreachable for fuzzing.",
  "WorthFuzzing": false
}

You are an expert Linux kernel maintainer and security engineer.
Your job is to review a provided patch series and evaluate whether it warrants fuzzing with syzkaller.

IMPORTANT: The changes have ALREADY been applied and committed as the HEAD commit in
your workspace. Do NOT rely on internal assumptions. You must actively use your code access
tools to inspect the actual source code, callers, and surrounding context.

================================================================================
1. CORE TRIAGE PHILOSOPHY
================================================================================
The goal of patch fuzzing is to discover crashes, regressions, exposed latent bugs,
and newly triggered assertions introduced by the patch series.

- REACHABILITY IS THE PRIMARY GATE:
  Fuzzing can only discover bugs in code that can actually execute in standard virtualized
  environments (GCE or QEMU, utilizing software-emulated devices like USB gadgets, netdev, tun/tap).
  If the modified code is structurally unreachable (see Section 2), it MUST NOT be fuzzed,
  regardless of whether it adds assertions or complex logic.

- DO NOT BLINDLY TRUST "NO FUNCTIONAL CHANGE" (NFCI) OR "REFACTORING" CLAIMS:
  Patch authors routinely label changes as "cleanups", "refactorings", or state
  "No functional change intended". Do NOT take these claims at face value.
  Code refactorings that rearrange logic, introduce helper functions, or alter state management
  in core subsystems frequently introduce subtle semantic shifts or uncover latent kernel bugs.
  If reachable executable code is modified or refactored, it MUST be fuzzed.

- NEW OR MODIFIED ASSERTIONS IN REACHABLE CODE MUST BE FUZZED:
  When a patch introduces or modifies runtime checks or assertions (e.g., WARN_ON*, VM_WARN_ON*,
  BUG_ON*, lockdep_assert*) in reachable code paths, it enforces new or stricter invariants.
  Even if the author believes the invariant always holds, fuzzing is essential to verify whether
  an unusual sequence of operations can violate it.

================================================================================
2. WHEN TO RETURN WorthFuzzing=false (NEGATIVE CRITERIA)
================================================================================
Return WorthFuzzing=false ONLY IF all modified code falls strictly into one or more of these categories:

- Non-kernel and non-executable changes:
  * Modifications to Documentation/, comments, or spelling fixes.
  * User-space directories, self-tests, samples, or scripts (e.g., tools/, samples/, scripts/, usr/)
    that do not affect the compiled kernel image (vmlinux) or kernel modules.
  * Purely decorative logging (e.g., message strings in pr_err, printk, dev_info) or tracepoints
    that do not alter control flow or data structures.
  * Build system or Kconfig changes that do not alter compiled C logic.
- Structurally unreachable hardware:
  * Vendor-specific PCIe switches, SmartNICs, or GPU drivers (e.g., mlxsw, pds_core, qed,
    ionic, amdgpu) requiring physical ASIC/PCIe cards not emulated in standard QEMU.
- Unreachable execution paths:
  * Driver teardown callbacks (.remove, .shutdown, pci_unregister_driver) executed only during
    physical PCI hot-unplug or manual sysfs driver unbinding.
  * Code paths exclusive to architectures other than the target architecture.

================================================================================
3. WHEN TO RETURN WorthFuzzing=true (POSITIVE CRITERIA)
================================================================================
Return WorthFuzzing=true whenever the patch touches reachable executable code, including:
- Core Subsystems:
  * Any logic modifications in memory management (mm/), synchronization/locking (kernel/locking/),
    BPF, scheduler, core networking, VFS, or syscall handling.
- Refactorings and Code Cleanups:
  * Any restructuring of reachable data structures, helper abstractions, or algorithm flows.
- Runtime Assertions and Defensive Checks:
  * Any introduction or alteration of assertions (WARN_ON*, VM_WARN_ON*, BUG_ON*, etc.) in reachable paths.
- Reachable Drivers and Protocols:
  * Drivers accessible via virtual buses (virtio, USB gadget, loopback, netlink, binder, sockets, etc.).

================================================================================
4. EXTRACTING FocusSymbols (PREVENTING DILUTION)
================================================================================
When WorthFuzzing=true, you must extract specific kernel functions into FocusSymbols to guide the fuzzer:

- AVOID UBIQUITOUS LIFECYCLE HOT-PATHS:
  Do NOT list generic, ubiquitous functions called by almost every program in the corpus
  (including, but not limited to: general memory allocators and deallocators, page fault
  and trap handlers, or core synchronization primitives; this is not an exhaustive list).
  Listing ubiquitous functions causes the fuzzer to classify thousands of unrelated tests as "focused",
  which severely dilutes fuzzing effort away from the actual changes.

- TARGET SPECIFIC FEATURE LOGIC AND ENTRYPOINTS:
  List functions that specifically implement the logic being added or altered, or direct API entrypoints
  for the subsystem feature under review.

- HANDLING STATIC INLINE FUNCTIONS IN HEADERS (.h):
  Compiler-inlined static functions (such as static inlines in mm/*.h or include/linux/*.h) lack
  distinct symbol addresses in vmlinux and cannot be targeted directly by symbol coverage filters.
  If the changes are primarily in static inline helpers, identify non-static, feature-specific caller
  functions in .c files that exercise them (avoiding ubiquitous lifecycle wrappers).

================================================================================
5. IDENTIFYING EnableConfigs
================================================================================
Identify any specific CONFIG_ options required to properly compile and reach the modified code:
- Inspect Kconfig files and #ifdef guards; do not make assumptions.
- Check "depends on" lines in Kconfig to include any non-standard parent subsystem configs needed.
- Strip any 'CONFIG_' prefix (e.g., return "NET_IPV4" instead of "CONFIG_NET_IPV4").
Prefer calling several tools at the same time to save round-trips.


Use set-results tool to provide results of the analysis.
It must be called exactly once before the final reply.
Ignore results of this tool.

Target architecture: amd64

For your convenience, here is the diff of the changes:
commit dbdf8762dfeb788059c96e571d8ea3ecee631151
Author: syz-cluster <triage@syzkaller.com>
Date:   Sun Sep 13 21:25:27 2026 +0000

    syz-cluster: applied patch under review

diff --git a/drivers/net/phy/marvell.c b/drivers/net/phy/marvell.c
index f71cffa884062..6f7c190880f2e 100644
--- a/drivers/net/phy/marvell.c
+++ b/drivers/net/phy/marvell.c
@@ -2074,6 +2074,35 @@ static int m88e1318_set_wol(struct phy_device *phydev,
 			goto error;
 	}
 
+	if (!(wol->wolopts & (WAKE_MAGIC | WAKE_PHY))) {
+		/* Fully disabled: undo the WoL interrupt setup done above,
+		 * so a later re-enable starts from a clean state.
+		 */
+		err = marvell_write_page(phydev, MII_MARVELL_COPPER_PAGE);
+		if (err < 0)
+			goto error;
+
+		err = __phy_clear_bits(phydev, MII_88E1318S_PHY_CSIER,
+				       MII_88E1318S_PHY_CSIER_WOL_EIE);
+		if (err < 0)
+			goto error;
+
+		err = marvell_write_page(phydev, MII_MARVELL_LED_PAGE);
+		if (err < 0)
+			goto error;
+
+		err = __phy_modify(phydev, MII_88E1318S_PHY_LED_TCR,
+				   MII_88E1318S_PHY_LED_TCR_FORCE_INT |
+				   MII_88E1318S_PHY_LED_TCR_INTn_ENABLE |
+				   MII_88E1318S_PHY_LED_TCR_INT_ACTIVE_LOW,
+				   phy_interrupt_is_valid(phydev) ?
+					MII_88E1318S_PHY_LED_TCR_INTn_ENABLE |
+					MII_88E1318S_PHY_LED_TCR_INT_ACTIVE_LOW :
+					0);
+		if (err < 0)
+			goto error;
+	}
+
 error:
 	return phy_restore_page(phydev, oldpage, err);
 }

gemini-3.8-flash

null

null

							input: 3262
							output: 37
							thoughts: 619
						

**Analyzing the Marvell PHY Driver Patch**

Okay, let's dive into this patch. I see the diff modifies `drivers/net/phy/marvell.c`, specifically the `m88e1318_set_wol` function. The code's adding logic to disable Wake-on-LAN (WoL) features when `WAKE_MAGIC` and `WAKE_PHY` aren't enabled. Specifically, it's clearing some interrupt settings and manipulating some LED configuration registers. This looks like a standard clean-up to ensure that WoL is fully disabled when it's supposed to be.

My immediate questions are: is this Marvell PHY driver, specifically for something like the 88E1318S, accessible in a typical testing environment like syzkaller or a virtualized QEMU setup? I need to figure out how easily I can replicate the conditions to actually trigger and test these changes. I need to understand what this Marvell PHY represents in the wider context of networking and device drivers. Let's use `grepper` to examine the `marvell.c` source and the Kconfig for related build options. This will help me figure out how the Marvell PHY is configured and how it interacts with the broader network stack and device driver systems. I need to ascertain the context of where the hardware fits into the wider system, and how to replicate it.

{
  "Expression": "m88e1318_set_wol",
  "PathPrefix": "drivers/net/phy"
}

{
  "Output": "drivers/net/phy/marvell.c=1949=static void m88e1318_get_wol(struct phy_device *phydev,\n--\ndrivers/net/phy/marvell.c-1968-\ndrivers/net/phy/marvell.c:1969:static int m88e1318_set_wol(struct phy_device *phydev,\ndrivers/net/phy/marvell.c-1970-\t\t\t    struct ethtool_wolinfo *wol)\n--\ndrivers/net/phy/marvell.c=3696=static struct phy_driver marvell_drivers[] = {\n--\ndrivers/net/phy/marvell.c-3851-\t\t.get_wol = m88e1318_get_wol,\ndrivers/net/phy/marvell.c:3852:\t\t.set_wol = m88e1318_set_wol,\ndrivers/net/phy/marvell.c-3853-\t\t.resume = genphy_resume,\n--\ndrivers/net/phy/marvell.c-3959-\t\t.get_wol = m88e1318_get_wol,\ndrivers/net/phy/marvell.c:3960:\t\t.set_wol = m88e1318_set_wol,\ndrivers/net/phy/marvell.c-3961-\t\t.resume = m88e1510_resume,\n"
}

gemini-3.8-flash

null

null

							input: 4590
							output: 30
							thoughts: 11
						

Here's my attempt at summarizing the thought process, tailored for an expert audience:

**Examining the Kconfig for `marvell.c`**

Alright, let's dive into the Kconfig file associated with `marvell.c`. My initial thought is to quickly understand the configuration options and dependencies specific to Marvell-based systems. I'll be looking for anything related to hardware support, specific chipsets (e.g., Armada, Kirkwood), board-level features, and driver functionalities. I'll anticipate seeing things like:

*   **Chipset Selection:** Expecting to see configuration options for selecting the specific Marvell SoC family or individual models supported by this driver. This should guide what hardware features and peripherals are enabled.
*   **Peripheral Configuration:** Looking for Kconfig options related to specific peripherals like Ethernet controllers, SATA/AHCI interfaces, USB controllers, SD/MMC interfaces, and other devices likely used in Marvell-based systems. I'll pay close attention to the granularity of these options (e.g., whether individual PHYs or controllers are configurable).
*   **Board-Specific Considerations:** I'll be interested in whether the Kconfig includes any board-specific options or if it relies on defconfigs and device trees to handle those details. Looking for options for clock frequencies, GPIO settings, or specific device addresses.
*   **Dependencies and Relationships:** I'll quickly scan for dependencies on other Kconfig symbols and modules. Understanding the relationships between this `marvell.c` and other drivers or core system features is critical to understand the complete system. Any conditional dependencies are going to be important to quickly understand, for example which other drivers require this to be present.
*   **Documentation or Comments:** Hopefully, the Kconfig is well-documented with comments explaining the purpose of each option and its implications. Good documentation can significantly speed up my understanding.

I anticipate that a good Kconfig will give me a clear picture of what Marvell hardware this driver supports and how it's intended to be configured within a larger system.

{
  "Expression": "MARVELL_PHY",
  "PathPrefix": "drivers/net/phy"
}

{
  "Output": "drivers/net/phy/Kconfig=273=config LSI_ET1011C_PHY\n--\ndrivers/net/phy/Kconfig-277-\ndrivers/net/phy/Kconfig:278:config MARVELL_PHY\ndrivers/net/phy/Kconfig-279-\ttristate \"Marvell Alaska PHYs\"\n--\ndrivers/net/phy/Makefile=71=obj-$(CONFIG_MARVELL_10G_PHY)\t+= marvell10g.o\ndrivers/net/phy/Makefile:72:obj-$(CONFIG_MARVELL_PHY)\t+= marvell.o\ndrivers/net/phy/Makefile-73-obj-$(CONFIG_MARVELL_88Q2XXX_PHY)\t+= marvell-88q2xxx.o\n--\ndrivers/net/phy/marvell-88q2xxx.c-14-\ndrivers/net/phy/marvell-88q2xxx.c:15:#define PHY_ID_88Q2220_REVB0\t\t\t\t(MARVELL_PHY_ID_88Q2220 | 0x1)\ndrivers/net/phy/marvell-88q2xxx.c:16:#define PHY_ID_88Q2220_REVB1\t\t\t\t(MARVELL_PHY_ID_88Q2220 | 0x2)\ndrivers/net/phy/marvell-88q2xxx.c:17:#define PHY_ID_88Q2220_REVB2\t\t\t\t(MARVELL_PHY_ID_88Q2220 | 0x3)\ndrivers/net/phy/marvell-88q2xxx.c-18-\n--\ndrivers/net/phy/marvell-88q2xxx.c=1102=static struct phy_driver mv88q2xxx_driver[] = {\ndrivers/net/phy/marvell-88q2xxx.c-1103-\t{\ndrivers/net/phy/marvell-88q2xxx.c:1104:\t\t.phy_id\t\t\t= MARVELL_PHY_ID_88Q2110,\ndrivers/net/phy/marvell-88q2xxx.c:1105:\t\t.phy_id_mask\t\t= MARVELL_PHY_ID_MASK,\ndrivers/net/phy/marvell-88q2xxx.c-1106-\t\t.name\t\t\t= \"mv88q2110\",\n--\ndrivers/net/phy/marvell-88q2xxx.c-1117-\t{\ndrivers/net/phy/marvell-88q2xxx.c:1118:\t\t.phy_id\t\t\t= MARVELL_PHY_ID_88Q2220,\ndrivers/net/phy/marvell-88q2xxx.c:1119:\t\t.phy_id_mask\t\t= MARVELL_PHY_ID_MASK,\ndrivers/net/phy/marvell-88q2xxx.c-1120-\t\t.name\t\t\t= \"mv88q2220\",\n--\ndrivers/net/phy/marvell-88q2xxx.c=1146=static const struct mdio_device_id __maybe_unused mv88q2xxx_tbl[] = {\ndrivers/net/phy/marvell-88q2xxx.c:1147:\t{ MARVELL_PHY_ID_88Q2110, MARVELL_PHY_ID_MASK },\ndrivers/net/phy/marvell-88q2xxx.c:1148:\t{ MARVELL_PHY_ID_88Q2220, MARVELL_PHY_ID_MASK },\ndrivers/net/phy/marvell-88q2xxx.c-1149-\t{ /*sentinel*/ }\n--\ndrivers/net/phy/marvell-88x2222.c=578=static struct phy_driver mv2222_drivers[] = {\ndrivers/net/phy/marvell-88x2222.c-579-\t{\ndrivers/net/phy/marvell-88x2222.c:580:\t\t.phy_id = MARVELL_PHY_ID_88X2222,\ndrivers/net/phy/marvell-88x2222.c:581:\t\t.phy_id_mask = MARVELL_PHY_ID_MASK,\ndrivers/net/phy/marvell-88x2222.c-582-\t\t.name = \"Marvell 88X2222\",\n--\ndrivers/net/phy/marvell-88x2222.c=597=static const struct mdio_device_id __maybe_unused mv2222_tbl[] = {\ndrivers/net/phy/marvell-88x2222.c:598:\t{ MARVELL_PHY_ID_88X2222, MARVELL_PHY_ID_MASK },\ndrivers/net/phy/marvell-88x2222.c-599-\t{ }\n--\ndrivers/net/phy/marvell.c-40-\ndrivers/net/phy/marvell.c:41:#define MII_MARVELL_PHY_PAGE\t\t22\ndrivers/net/phy/marvell.c-42-#define MII_MARVELL_COPPER_PAGE\t\t0x00\n--\ndrivers/net/phy/marvell.c=359=static int marvell_read_page(struct phy_device *phydev)\ndrivers/net/phy/marvell.c-360-{\ndrivers/net/phy/marvell.c:361:\treturn __phy_read(phydev, MII_MARVELL_PHY_PAGE);\ndrivers/net/phy/marvell.c-362-}\n--\ndrivers/net/phy/marvell.c=364=static int marvell_write_page(struct phy_device *phydev, int page)\ndrivers/net/phy/marvell.c-365-{\ndrivers/net/phy/marvell.c:366:\treturn __phy_write(phydev, MII_MARVELL_PHY_PAGE, page);\ndrivers/net/phy/marvell.c-367-}\n--\ndrivers/net/phy/marvell.c=369=static int marvell_set_page(struct phy_device *phydev, int page)\ndrivers/net/phy/marvell.c-370-{\ndrivers/net/phy/marvell.c:371:\treturn phy_write(phydev, MII_MARVELL_PHY_PAGE, page);\ndrivers/net/phy/marvell.c-372-}\n--\ndrivers/net/phy/marvell.c=843=static void marvell_config_led(struct phy_device *phydev)\n--\ndrivers/net/phy/marvell.c-847-\ndrivers/net/phy/marvell.c:848:\tswitch (MARVELL_PHY_FAMILY_ID(phydev-\u003ephy_id)) {\ndrivers/net/phy/marvell.c-849-\t/* Default PHY LED config: LED[0] .. Link, LED[1] .. Activity */\ndrivers/net/phy/marvell.c:850:\tcase MARVELL_PHY_FAMILY_ID(MARVELL_PHY_ID_88E1121R):\ndrivers/net/phy/marvell.c:851:\tcase MARVELL_PHY_FAMILY_ID(MARVELL_PHY_ID_88E1318S):\ndrivers/net/phy/marvell.c-852-\t\tdef_config = MII_88E1121_PHY_LED_DEF;\n--\ndrivers/net/phy/marvell.c-858-\t */\ndrivers/net/phy/marvell.c:859:\tcase MARVELL_PHY_FAMILY_ID(MARVELL_PHY_ID_88E1510):\ndrivers/net/phy/marvell.c:860:\t\tif (phydev-\u003edev_flags \u0026 MARVELL_PHY_LED0_LINK_LED1_ACTIVE)\ndrivers/net/phy/marvell.c-861-\t\t\tdef_config = MII_88E1510_PHY_LED0_LINK_LED1_ACTIVE;\n--\ndrivers/net/phy/marvell.c=1373=static int m88e1118_config_init(struct phy_device *phydev)\n--\ndrivers/net/phy/marvell.c-1390-\t/* Adjust LED Control */\ndrivers/net/phy/marvell.c:1391:\tif (phydev-\u003edev_flags \u0026 MARVELL_PHY_M1118_DNS323_LEDS)\ndrivers/net/phy/marvell.c-1392-\t\tleds = 0x1100;\n--\ndrivers/net/phy/marvell.c=1438=static int m88e1145_config_init_rgmii(struct phy_device *phydev)\n--\ndrivers/net/phy/marvell.c-1445-\ndrivers/net/phy/marvell.c:1446:\tif (phydev-\u003edev_flags \u0026 MARVELL_PHY_M1145_FLAGS_RESISTANCE) {\ndrivers/net/phy/marvell.c-1447-\t\terr = phy_write(phydev, 0x1d, 0x0012);\n--\ndrivers/net/phy/marvell.c=3696=static struct phy_driver marvell_drivers[] = {\ndrivers/net/phy/marvell.c-3697-\t{\ndrivers/net/phy/marvell.c:3698:\t\t.phy_id = MARVELL_PHY_ID_88E1101,\ndrivers/net/phy/marvell.c:3699:\t\t.phy_id_mask = MARVELL_PHY_ID_MASK,\ndrivers/net/phy/marvell.c-3700-\t\t.name = \"Marvell 88E1101\",\n--\ndrivers/net/phy/marvell.c-3715-\t{\ndrivers/net/phy/marvell.c:3716:\t\t.phy_id = MARVELL_PHY_ID_88E3082,\ndrivers/net/phy/marvell.c:3717:\t\t.phy_id_mask = MARVELL_PHY_ID_MASK,\ndrivers/net/phy/marvell.c-3718-\t\t.name = \"Marvell 88E308X/88E609X Family\",\n--\ndrivers/net/phy/marvell.c-3729-\t{\ndrivers/net/phy/marvell.c:3730:\t\t.phy_id = MARVELL_PHY_ID_88E1112,\ndrivers/net/phy/marvell.c:3731:\t\t.phy_id_mask = MARVELL_PHY_ID_MASK,\ndrivers/net/phy/marvell.c-3732-\t\t.name = \"Marvell 88E1112\",\n--\ndrivers/net/phy/marvell.c-3751-\t{\ndrivers/net/phy/marvell.c:3752:\t\t.phy_id = MARVELL_PHY_ID_88E1111,\ndrivers/net/phy/marvell.c:3753:\t\t.phy_id_mask = MARVELL_PHY_ID_MASK,\ndrivers/net/phy/marvell.c-3754-\t\t.name = \"Marvell 88E1111\",\n--\ndrivers/net/phy/marvell.c-3777-\t{\ndrivers/net/phy/marvell.c:3778:\t\t.phy_id = MARVELL_PHY_ID_88E1111_FINISAR,\ndrivers/net/phy/marvell.c:3779:\t\t.phy_id_mask = MARVELL_PHY_ID_MASK,\ndrivers/net/phy/marvell.c-3780-\t\t.name = \"Marvell 88E1111 (Finisar)\",\n--\ndrivers/net/phy/marvell.c-3800-\t{\ndrivers/net/phy/marvell.c:3801:\t\t.phy_id = MARVELL_PHY_ID_88E1118,\ndrivers/net/phy/marvell.c:3802:\t\t.phy_id_mask = MARVELL_PHY_ID_MASK,\ndrivers/net/phy/marvell.c-3803-\t\t.name = \"Marvell 88E1118\",\n--\ndrivers/net/phy/marvell.c-3818-\t{\ndrivers/net/phy/marvell.c:3819:\t\t.phy_id = MARVELL_PHY_ID_88E1121R,\ndrivers/net/phy/marvell.c:3820:\t\t.phy_id_mask = MARVELL_PHY_ID_MASK,\ndrivers/net/phy/marvell.c-3821-\t\t.name = \"Marvell 88E1121R\",\n--\ndrivers/net/phy/marvell.c-3840-\t{\ndrivers/net/phy/marvell.c:3841:\t\t.phy_id = MARVELL_PHY_ID_88E1318S,\ndrivers/net/phy/marvell.c:3842:\t\t.phy_id_mask = MARVELL_PHY_ID_MASK,\ndrivers/net/phy/marvell.c-3843-\t\t.name = \"Marvell 88E1318S\",\n--\ndrivers/net/phy/marvell.c-3866-\t{\ndrivers/net/phy/marvell.c:3867:\t\t.phy_id = MARVELL_PHY_ID_88E1145,\ndrivers/net/phy/marvell.c:3868:\t\t.phy_id_mask = MARVELL_PHY_ID_MASK,\ndrivers/net/phy/marvell.c-3869-\t\t.name = \"Marvell 88E1145\",\n--\ndrivers/net/phy/marvell.c-3889-\t{\ndrivers/net/phy/marvell.c:3890:\t\t.phy_id = MARVELL_PHY_ID_88E1149R,\ndrivers/net/phy/marvell.c:3891:\t\t.phy_id_mask = MARVELL_PHY_ID_MASK,\ndrivers/net/phy/marvell.c-3892-\t\t.name = \"Marvell 88E1149R\",\n--\ndrivers/net/phy/marvell.c-3907-\t{\ndrivers/net/phy/marvell.c:3908:\t\t.phy_id = MARVELL_PHY_ID_88E1240,\ndrivers/net/phy/marvell.c:3909:\t\t.phy_id_mask = MARVELL_PHY_ID_MASK,\ndrivers/net/phy/marvell.c-3910-\t\t.name = \"Marvell 88E1240\",\n--\ndrivers/net/phy/marvell.c-3927-\t{\ndrivers/net/phy/marvell.c:3928:\t\t.phy_id = MARVELL_PHY_ID_88E1116R,\ndrivers/net/phy/marvell.c:3929:\t\t.phy_id_mask = MARVELL_PHY_ID_MASK,\ndrivers/net/phy/marvell.c-3930-\t\t.name = \"Marvell 88E1116R\",\n--\ndrivers/net/phy/marvell.c-3946-\t{\ndrivers/net/phy/marvell.c:3947:\t\t.phy_id = MARVELL_PHY_ID_88E1510,\ndrivers/net/phy/marvell.c:3948:\t\t.phy_id_mask = MARVELL_PHY_ID_MASK,\ndrivers/net/phy/marvell.c-3949-\t\t.name = \"Marvell 88E1510\",\n--\ndrivers/net/phy/marvell.c-3981-\t{\ndrivers/net/phy/marvell.c:3982:\t\t.phy_id = MARVELL_PHY_ID_88E1540,\ndrivers/net/phy/marvell.c:3983:\t\t.phy_id_mask = MARVELL_PHY_ID_MASK,\ndrivers/net/phy/marvell.c-3984-\t\t.name = \"Marvell 88E1540\",\n--\ndrivers/net/phy/marvell.c-4012-\t{\ndrivers/net/phy/marvell.c:4013:\t\t.phy_id = MARVELL_PHY_ID_88E1545,\ndrivers/net/phy/marvell.c:4014:\t\t.phy_id_mask = MARVELL_PHY_ID_MASK,\ndrivers/net/phy/marvell.c-4015-\t\t.name = \"Marvell 88E1545\",\n--\ndrivers/net/phy/marvell.c-4043-\t{\ndrivers/net/phy/marvell.c:4044:\t\t.phy_id = MARVELL_PHY_ID_88E3016,\ndrivers/net/phy/marvell.c:4045:\t\t.phy_id_mask = MARVELL_PHY_ID_MASK,\ndrivers/net/phy/marvell.c-4046-\t\t.name = \"Marvell 88E3016\",\n--\ndrivers/net/phy/marvell.c-4062-\t{\ndrivers/net/phy/marvell.c:4063:\t\t.phy_id = MARVELL_PHY_ID_88E6250_FAMILY,\ndrivers/net/phy/marvell.c:4064:\t\t.phy_id_mask = MARVELL_PHY_ID_MASK,\ndrivers/net/phy/marvell.c-4065-\t\t.name = \"Marvell 88E6250 Family\",\n--\ndrivers/net/phy/marvell.c-4077-\t{\ndrivers/net/phy/marvell.c:4078:\t\t.phy_id = MARVELL_PHY_ID_88E6341_FAMILY,\ndrivers/net/phy/marvell.c:4079:\t\t.phy_id_mask = MARVELL_PHY_ID_MASK,\ndrivers/net/phy/marvell.c-4080-\t\t.name = \"Marvell 88E6341 Family\",\n--\ndrivers/net/phy/marvell.c-4103-\t{\ndrivers/net/phy/marvell.c:4104:\t\t.phy_id = MARVELL_PHY_ID_88E6390_FAMILY,\ndrivers/net/phy/marvell.c:4105:\t\t.phy_id_mask = MARVELL_PHY_ID_MASK,\ndrivers/net/phy/marvell.c-4106-\t\t.name = \"Marvell 88E6390 Family\",\n--\ndrivers/net/phy/marvell.c-4129-\t{\ndrivers/net/phy/marvell.c:4130:\t\t.phy_id = MARVELL_PHY_ID_88E6393_FAMILY,\ndrivers/net/phy/marvell.c:4131:\t\t.phy_id_mask = MARVELL_PHY_ID_MASK,\ndrivers/net/phy/marvell.c-4132-\t\t.name = \"Marvell 88E6393 Family\",\n--\ndrivers/net/phy/marvell.c-4155-\t{\ndrivers/net/phy/marvell.c:4156:\t\t.phy_id = MARVELL_PHY_ID_88E1340S,\ndrivers/net/phy/marvell.c:4157:\t\t.phy_id_mask = MARVELL_PHY_ID_MASK,\ndrivers/net/phy/marvell.c-4158-\t\t.name = \"Marvell 88E1340S\",\n--\ndrivers/net/phy/marvell.c-4177-\t{\ndrivers/net/phy/marvell.c:4178:\t\t.phy_id = MARVELL_PHY_ID_88E1548P,\ndrivers/net/phy/marvell.c:4179:\t\t.phy_id_mask = MARVELL_PHY_ID_MASK,\ndrivers/net/phy/marvell.c-4180-\t\t.name = \"Marvell 88E1548P\",\n--\ndrivers/net/phy/marvell.c=4208=static const struct mdio_device_id __maybe_unused marvell_tbl[] = {\ndrivers/net/phy/marvell.c:4209:\t{ MARVELL_PHY_ID_88E1101, MARVELL_PHY_ID_MASK },\ndrivers/net/phy/marvell.c:4210:\t{ MARVELL_PHY_ID_88E3082, MARVELL_PHY_ID_MASK },\ndrivers/net/phy/marvell.c:4211:\t{ MARVELL_PHY_ID_88E1112, MARVELL_PHY_ID_MASK },\ndrivers/net/phy/marvell.c:4212:\t{ MARVELL_PHY_ID_88E1111, MARVELL_PHY_ID_MASK },\ndrivers/net/phy/marvell.c:4213:\t{ MARVELL_PHY_ID_88E1111_FINISAR, MARVELL_PHY_ID_MASK },\ndrivers/net/phy/marvell.c:4214:\t{ MARVELL_PHY_ID_88E1118, MARVELL_PHY_ID_MASK },\ndrivers/net/phy/marvell.c:4215:\t{ MARVELL_PHY_ID_88E1121R, MARVELL_PHY_ID_MASK },\ndrivers/net/phy/marvell.c:4216:\t{ MARVELL_PHY_ID_88E1145, MARVELL_PHY_ID_MASK },\ndrivers/net/phy/marvell.c:4217:\t{ MARVELL_PHY_ID_88E1149R, MARVELL_PHY_ID_MASK },\ndrivers/net/phy/marvell.c:4218:\t{ MARVELL_PHY_ID_88E1240, MARVELL_PHY_ID_MASK },\ndrivers/net/phy/marvell.c:4219:\t{ MARVELL_PHY_ID_88E1318S, MARVELL_PHY_ID_MASK },\ndrivers/net/phy/marvell.c:4220:\t{ MARVELL_PHY_ID_88E1116R, MARVELL_PHY_ID_MASK },\ndrivers/net/phy/marvell.c:4221:\t{ MARVELL_PHY_ID_88E1510, MARVELL_PHY_ID_MASK },\ndrivers/net/phy/marvell.c:4222:\t{ MARVELL_PHY_ID_88E1540, MARVELL_PHY_ID_MASK },\ndrivers/net/phy/marvell.c:4223:\t{ MARVELL_PHY_ID_88E1545, MARVELL_PHY_ID_MASK },\ndrivers/net/phy/marvell.c:4224:\t{ MARVELL_PHY_ID_88E3016, MARVELL_PHY_ID_MASK },\ndrivers/net/phy/marvell.c:4225:\t{ MARVELL_PHY_ID_88E6250_FAMILY, MARVELL_PHY_ID_MASK },\ndrivers/net/phy/marvell.c:4226:\t{ MARVELL_PHY_ID_88E6341_FAMILY, MARVELL_PHY_ID_MASK },\ndrivers/net/phy/marvell.c:4227:\t{ MARVELL_PHY_ID_88E6390_FAMILY, MARVELL_PHY_ID_MASK },\ndrivers/net/phy/marvell.c:4228:\t{ MARVELL_PHY_ID_88E6393_FAMILY, MARVELL_PHY_ID_MASK },\ndrivers/net/phy/marvell.c:4229:\t{ MARVELL_PHY_ID_88E1340S, MARVELL_PHY_ID_MASK },\ndrivers/net/phy/marvell.c:4230:\t{ MARVELL_PHY_ID_88E1548P, MARVELL_PHY_ID_MASK },\ndrivers/net/phy/marvell.c-4231-\t{ }\n--\ndrivers/net/phy/marvell10g.c-34-#define MV_PHY_ALASKA_NBT_QUIRK_MASK\t0xfffffffe\ndrivers/net/phy/marvell10g.c:35:#define MV_PHY_ALASKA_NBT_QUIRK_REV\t(MARVELL_PHY_ID_88X3310 | 0xa)\ndrivers/net/phy/marvell10g.c-36-\n--\ndrivers/net/phy/marvell10g.c=244=static int mv3310_hwmon_config(struct phy_device *phydev, bool enable)\n--\ndrivers/net/phy/marvell10g.c-248-\ndrivers/net/phy/marvell10g.c:249:\tif (phydev-\u003edrv-\u003ephy_id != MARVELL_PHY_ID_88X3310)\ndrivers/net/phy/marvell10g.c-250-\t\treturn 0;\n--\ndrivers/net/phy/marvell10g.c=310=static int mv3310_power_up(struct phy_device *phydev)\n--\ndrivers/net/phy/marvell10g.c-324-\ndrivers/net/phy/marvell10g.c:325:\tif (phydev-\u003edrv-\u003ephy_id != MARVELL_PHY_ID_88X3310 ||\ndrivers/net/phy/marvell10g.c-326-\t    priv-\u003efirmware_ver \u003c 0x00030000)\n--\ndrivers/net/phy/marvell10g.c=1267=static int mv3310_match_phy_device(struct phy_device *phydev,\n--\ndrivers/net/phy/marvell10g.c-1270-\tif ((phydev-\u003ec45_ids.device_ids[MDIO_MMD_PMAPMD] \u0026\ndrivers/net/phy/marvell10g.c:1271:\t     MARVELL_PHY_ID_MASK) != MARVELL_PHY_ID_88X3310)\ndrivers/net/phy/marvell10g.c-1272-\t\treturn 0;\n--\ndrivers/net/phy/marvell10g.c=1277=static int mv3340_match_phy_device(struct phy_device *phydev,\n--\ndrivers/net/phy/marvell10g.c-1280-\tif ((phydev-\u003ec45_ids.device_ids[MDIO_MMD_PMAPMD] \u0026\ndrivers/net/phy/marvell10g.c:1281:\t     MARVELL_PHY_ID_MASK) != MARVELL_PHY_ID_88X3310)\ndrivers/net/phy/marvell10g.c-1282-\t\treturn 0;\n--\ndrivers/net/phy/marvell10g.c=1287=static int mv211x_match_phy_device(struct phy_device *phydev, bool has_5g)\n--\ndrivers/net/phy/marvell10g.c-1291-\tif ((phydev-\u003ec45_ids.device_ids[MDIO_MMD_PMAPMD] \u0026\ndrivers/net/phy/marvell10g.c:1292:\t     MARVELL_PHY_ID_MASK) != MARVELL_PHY_ID_88E2110)\ndrivers/net/phy/marvell10g.c-1293-\t\treturn 0;\n--\ndrivers/net/phy/marvell10g.c=1388=static struct phy_driver mv3310_drivers[] = {\ndrivers/net/phy/marvell10g.c-1389-\t{\ndrivers/net/phy/marvell10g.c:1390:\t\t.phy_id\t\t= MARVELL_PHY_ID_88X3310,\ndrivers/net/phy/marvell10g.c:1391:\t\t.phy_id_mask\t= MARVELL_PHY_ID_MASK,\ndrivers/net/phy/marvell10g.c-1392-\t\t.match_phy_device = mv3310_match_phy_device,\n--\ndrivers/net/phy/marvell10g.c-1412-\t{\ndrivers/net/phy/marvell10g.c:1413:\t\t.phy_id\t\t= MARVELL_PHY_ID_88X3310,\ndrivers/net/phy/marvell10g.c:1414:\t\t.phy_id_mask\t= MARVELL_PHY_ID_MASK,\ndrivers/net/phy/marvell10g.c-1415-\t\t.match_phy_device = mv3340_match_phy_device,\n--\ndrivers/net/phy/marvell10g.c-1433-\t{\ndrivers/net/phy/marvell10g.c:1434:\t\t.phy_id\t\t= MARVELL_PHY_ID_88E2110,\ndrivers/net/phy/marvell10g.c:1435:\t\t.phy_id_mask\t= MARVELL_PHY_ID_MASK,\ndrivers/net/phy/marvell10g.c-1436-\t\t.match_phy_device = mv2110_match_phy_device,\n--\ndrivers/net/phy/marvell10g.c-1455-\t{\ndrivers/net/phy/marvell10g.c:1456:\t\t.phy_id\t\t= MARVELL_PHY_ID_88E2110,\ndrivers/net/phy/marvell10g.c:1457:\t\t.phy_id_mask\t= MARVELL_PHY_ID_MASK,\ndrivers/net/phy/marvell10g.c-1458-\t\t.match_phy_device = mv2111_match_phy_device,\n--\ndrivers/net/phy/marvell10g.c=1479=static const struct mdio_device_id __maybe_unused mv3310_tbl[] = {\ndrivers/net/phy/marvell10g.c:1480:\t{ MARVELL_PHY_ID_88X3310, MARVELL_PHY_ID_MASK },\ndrivers/net/phy/marvell10g.c:1481:\t{ MARVELL_PHY_ID_88E2110, MARVELL_PHY_ID_MASK },\ndrivers/net/phy/marvell10g.c-1482-\t{ },\n--\ndrivers/net/phy/phylink.c=3990=static int phylink_sfp_connect_phy(void *upstream, struct phy_device *phy)\n--\ndrivers/net/phy/phylink.c-3996-\t\t\t    phydev_name(phy), (unsigned long)phy-\u003ephy_id);\ndrivers/net/phy/phylink.c:3997:\t\tphylink_err(pl, \"Drivers which handle known common cases: CONFIG_BCM84881_PHY, CONFIG_MARVELL_PHY\\n\");\ndrivers/net/phy/phylink.c-3998-\t\treturn -EINVAL;\n"
}

gemini-3.8-flash

null

null

							input: 13231
							output: 28
							thoughts: 138
						

**Investigating Marvell PHY Driver Reachability in a Virtual Environment**

Okay, so I'm looking at `drivers/net/phy/marvell.c`, the MDIO PHY driver for Marvell PHYs. My immediate question is: can I even *access* Marvell PHYs in a standard QEMU environment, or any other virtualized setup for that matter? I need to figure out if this is even something I can realistically target.

The next thing that jumps to mind is: can syzkaller – my go-to fuzzing tool – even reach the `marvell.c` driver? That's the real key. I need to understand the connection points, the attack surface.

Alright, time to get practical. I need to trace the creation and binding process of PHY devices within the Linux kernel itself. Where do these things *come* from? Are there any virtual MDIO buses that are simulated or emulated? Let me see... maybe that's the key to making this work virtually. I'll need to search the kernel source, and I'll start with keywords like "mdio buses", "simulated phy", to see if anything jumps out.

I need to delve into the kernel's code to find a path to virtualize access to these PHYs. Let's start with a focused grep: `mdio`, `phy_device_create`, `mdio_gpio`, and, just in case, `mdio-bitbang`. That should hopefully reveal how these devices are registered, probed, and controlled, and then I'll see if I can find a virtual analog.

{
  "Expression": "phy_device_create",
  "PathPrefix": "drivers/net"
}

{
  "Output": "drivers/net/mdio/fwnode_mdio.c=117=int fwnode_mdiobus_register_phy(struct mii_bus *bus,\n--\ndrivers/net/mdio/fwnode_mdio.c-134-\telse\ndrivers/net/mdio/fwnode_mdio.c:135:\t\tphy = phy_device_create(bus, addr, phy_id, 0, NULL);\ndrivers/net/mdio/fwnode_mdio.c-136-\tif (IS_ERR(phy)) {\n--\ndrivers/net/phy/nxp-tja11xx.c=551=static void tja1102_p1_register(struct work_struct *work)\n--\ndrivers/net/phy/nxp-tja11xx.c-585-\t\t/* Real PHY ID of Port 1 is 0 */\ndrivers/net/phy/nxp-tja11xx.c:586:\t\tphy = phy_device_create(bus, addr, PHY_ID_TJA1102, false, NULL);\ndrivers/net/phy/nxp-tja11xx.c-587-\t\tif (IS_ERR(phy)) {\n--\ndrivers/net/phy/nxp-tja11xx.c-592-\ndrivers/net/phy/nxp-tja11xx.c:593:\t\t/* Overwrite parent device. phy_device_create() set parent to\ndrivers/net/phy/nxp-tja11xx.c-594-\t\t * the mii_bus-\u003edev, which is not correct in case.\n--\ndrivers/net/phy/phy_device.c=728=static int phy_request_driver_module(struct phy_device *dev, u32 phy_id)\n--\ndrivers/net/phy/phy_device.c-747-\ndrivers/net/phy/phy_device.c:748:struct phy_device *phy_device_create(struct mii_bus *bus, int addr, u32 phy_id,\ndrivers/net/phy/phy_device.c-749-\t\t\t\t     bool is_c45,\n--\ndrivers/net/phy/phy_device.c-839-}\ndrivers/net/phy/phy_device.c:840:EXPORT_SYMBOL(phy_device_create);\ndrivers/net/phy/phy_device.c-841-\n--\ndrivers/net/phy/phy_device.c=1071=struct phy_device *get_phy_device(struct mii_bus *bus, int addr, bool is_c45)\n--\ndrivers/net/phy/phy_device.c-1096-\t\tif (!r)\ndrivers/net/phy/phy_device.c:1097:\t\t\treturn phy_device_create(bus, addr, phy_id,\ndrivers/net/phy/phy_device.c-1098-\t\t\t\t\t\t true, \u0026c45_ids);\n--\ndrivers/net/phy/phy_device.c-1100-\ndrivers/net/phy/phy_device.c:1101:\treturn phy_device_create(bus, addr, phy_id, is_c45, \u0026c45_ids);\ndrivers/net/phy/phy_device.c-1102-}\n"
}

gemini-3.8-flash

null

null

							input: 14573
							output: 30
							thoughts: 114
						

**Investigating MDIO Bus and PHY Device Instantiation in QEMU**

Okay, let's break this down. My immediate question is: what actually *builds* an MDIO bus or a PHY device in a QEMU environment? Is there any kind of virtual or emulated hardware within QEMU that specifically chooses to instantiate a Marvell PHY, for instance?

I need to focus on a standard QEMU amd64 setup. Thinking about that, what network devices are *commonly* used? I know there's e1000, virtio-net, rtl8139, pcnet, ne2k_pci, vmxnet3, igb... a decent list.

Ah, wait. Now I'm wondering about the *e1000* specifically. Does it leverage phylib in some way? That seems like a good place to start digging deeper. I should check that. Let me look into if the e1000 driver uses phylib.

{
  "Expression": "phy_connect|phy_attach",
  "PathPrefix": "drivers/net"
}

{
  "Output": "\nFull output is too long, showing 500 out of 1263 lines.\nUse more precise expression if possible.\n\ndrivers/net/dsa/bcm_sf2.c=607=static int bcm_sf2_mdio_register(struct dsa_switch *ds)\n--\ndrivers/net/dsa/bcm_sf2.c-656-\ndrivers/net/dsa/bcm_sf2.c:657:\t/* We need to make sure that of_phy_connect() will not work by\ndrivers/net/dsa/bcm_sf2.c-658-\t * removing the 'phandle' and 'linux,phandle' properties and\n--\ndrivers/net/dsa/netc/netc_main.c=968=static bool netc_port_is_emdio_consumer(struct device_node *node)\n--\ndrivers/net/dsa/netc/netc_main.c-984-\ndrivers/net/dsa/netc/netc_main.c:985:/* Currently, phylink_of_phy_connect() is called by dsa_user_create(),\ndrivers/net/dsa/netc/netc_main.c-986- * so if the switch uses the external MDIO controller (like the EMDIO\ndrivers/net/dsa/netc/netc_main.c-987- * function) to manage the external PHYs. The MDIO bus may not be\ndrivers/net/dsa/netc/netc_main.c:988: * created when phylink_of_phy_connect() is called, so it will return\ndrivers/net/dsa/netc/netc_main.c-989- * an error and cause the switch driver to fail to probe.\ndrivers/net/dsa/netc/netc_main.c:990: * This workaround can be removed when DSA phylink_of_phy_connect()\ndrivers/net/dsa/netc/netc_main.c-991- * calls are moved from probe() to ndo_open().\n--\ndrivers/net/ethernet/8390/ax88796.c=364=static int ax_mii_probe(struct net_device *dev)\n--\ndrivers/net/ethernet/8390/ax88796.c-376-\ndrivers/net/ethernet/8390/ax88796.c:377:\tret = phy_connect_direct(dev, phy_dev, ax_handle_link_change,\ndrivers/net/ethernet/8390/ax88796.c-378-\t\t\t\t PHY_INTERFACE_MODE_MII);\n--\ndrivers/net/ethernet/actions/owl-emac.c=1353=static int owl_emac_phy_init(struct net_device *netdev)\n--\ndrivers/net/ethernet/actions/owl-emac.c-1366-\tif (netif_msg_link(priv))\ndrivers/net/ethernet/actions/owl-emac.c:1367:\t\tphy_attached_info(phy);\ndrivers/net/ethernet/actions/owl-emac.c-1368-\n--\ndrivers/net/ethernet/adi/adin1110.c=1569=static int adin1110_probe_netdevs(struct adin1110_priv *priv)\n--\ndrivers/net/ethernet/adi/adin1110.c-1612-\ndrivers/net/ethernet/adi/adin1110.c:1613:\t\tport_priv-\u003ephydev = phy_connect(netdev,\ndrivers/net/ethernet/adi/adin1110.c-1614-\t\t\t\t\t\tphydev_name(port_priv-\u003ephydev),\n--\ndrivers/net/ethernet/adi/adin1140.c=650=static int adin1140_phy_init(struct adin1140_priv *priv,\n--\ndrivers/net/ethernet/adi/adin1140.c-663-\tpriv-\u003ephydev-\u003eis_internal = true;\ndrivers/net/ethernet/adi/adin1140.c:664:\tret = phy_connect_direct(priv-\u003enetdev, priv-\u003ephydev,\ndrivers/net/ethernet/adi/adin1140.c-665-\t\t\t\t \u0026adin1140_handle_link_change,\n--\ndrivers/net/ethernet/adi/adin1140.c-676-\ndrivers/net/ethernet/adi/adin1140.c:677:\tphy_attached_info(priv-\u003ephydev);\ndrivers/net/ethernet/adi/adin1140.c-678-\n--\ndrivers/net/ethernet/aeroflex/greth.c=1253=static int greth_mdio_probe(struct net_device *dev)\n--\ndrivers/net/ethernet/aeroflex/greth.c-1267-\ndrivers/net/ethernet/aeroflex/greth.c:1268:\tret = phy_connect_direct(dev, phy, \u0026greth_link_change,\ndrivers/net/ethernet/aeroflex/greth.c-1269-\t\t\t\t greth-\u003egbit_mac ? PHY_INTERFACE_MODE_GMII : PHY_INTERFACE_MODE_MII);\n--\ndrivers/net/ethernet/agere/et131x.c=3273=static int et131x_mii_probe(struct net_device *netdev)\n--\ndrivers/net/ethernet/agere/et131x.c-3283-\ndrivers/net/ethernet/agere/et131x.c:3284:\tphydev = phy_connect(netdev, phydev_name(phydev),\ndrivers/net/ethernet/agere/et131x.c-3285-\t\t\t     \u0026et131x_adjust_link, PHY_INTERFACE_MODE_MII);\n--\ndrivers/net/ethernet/agere/et131x.c-3298-\ndrivers/net/ethernet/agere/et131x.c:3299:\tphy_attached_info(phydev);\ndrivers/net/ethernet/agere/et131x.c-3300-\n--\ndrivers/net/ethernet/allwinner/sun4i-emac.c=167=static int emac_mdio_probe(struct net_device *dev)\n--\ndrivers/net/ethernet/allwinner/sun4i-emac.c-174-\t/* attach the mac to the phy */\ndrivers/net/ethernet/allwinner/sun4i-emac.c:175:\tphydev = of_phy_connect(db-\u003endev, db-\u003ephy_node,\ndrivers/net/ethernet/allwinner/sun4i-emac.c-176-\t\t\t\t\u0026emac_handle_link_change, 0,\n--\ndrivers/net/ethernet/altera/altera_tse_main.c=876=static int tse_open(struct net_device *dev)\n--\ndrivers/net/ethernet/altera/altera_tse_main.c-951-\ndrivers/net/ethernet/altera/altera_tse_main.c:952:\tret = phylink_of_phy_connect(priv-\u003ephylink, priv-\u003edevice-\u003eof_node, 0);\ndrivers/net/ethernet/altera/altera_tse_main.c-953-\tif (ret) {\n--\ndrivers/net/ethernet/amd/au1000_eth.c=472=static int au1000_mii_probe(struct net_device *dev)\n--\ndrivers/net/ethernet/amd/au1000_eth.c-538-\ndrivers/net/ethernet/amd/au1000_eth.c:539:\tphydev = phy_connect(dev, phydev_name(phydev),\ndrivers/net/ethernet/amd/au1000_eth.c-540-\t\t\t     \u0026au1000_adjust_link, PHY_INTERFACE_MODE_MII);\n--\ndrivers/net/ethernet/amd/au1000_eth.c-552-\ndrivers/net/ethernet/amd/au1000_eth.c:553:\tphy_attached_info(phydev);\ndrivers/net/ethernet/amd/au1000_eth.c-554-\n--\ndrivers/net/ethernet/amd/xgbe/xgbe-phy-v2.c=931=static int xgbe_phy_find_phy_device(struct xgbe_prv_data *pdata)\n--\ndrivers/net/ethernet/amd/xgbe/xgbe-phy-v2.c-982-\ndrivers/net/ethernet/amd/xgbe/xgbe-phy-v2.c:983:\tret = phy_attach_direct(pdata-\u003enetdev, phydev, phydev-\u003edev_flags,\ndrivers/net/ethernet/amd/xgbe/xgbe-phy-v2.c-984-\t\t\t\tPHY_INTERFACE_MODE_SGMII);\ndrivers/net/ethernet/amd/xgbe/xgbe-phy-v2.c-985-\tif (ret) {\ndrivers/net/ethernet/amd/xgbe/xgbe-phy-v2.c:986:\t\tnetdev_err(pdata-\u003enetdev, \"phy_attach_direct failed\\n\");\ndrivers/net/ethernet/amd/xgbe/xgbe-phy-v2.c-987-\t\tphy_device_remove(phydev);\n--\ndrivers/net/ethernet/apm/xgene-v2/mdio.c=98=int xge_mdio_config(struct net_device *ndev)\n--\ndrivers/net/ethernet/apm/xgene-v2/mdio.c-128-\t}\ndrivers/net/ethernet/apm/xgene-v2/mdio.c:129:\tphydev = phy_connect(ndev, phydev_name(phydev),\ndrivers/net/ethernet/apm/xgene-v2/mdio.c-130-\t\t\t     \u0026xge_adjust_link,\n--\ndrivers/net/ethernet/apm/xgene/xgene_enet_hw.c=819=static struct acpi_device *acpi_phy_find_device(struct device *dev)\n--\ndrivers/net/ethernet/apm/xgene/xgene_enet_hw.c-836-\ndrivers/net/ethernet/apm/xgene/xgene_enet_hw.c:837:int xgene_enet_phy_connect(struct net_device *ndev)\ndrivers/net/ethernet/apm/xgene/xgene_enet_hw.c-838-{\n--\ndrivers/net/ethernet/apm/xgene/xgene_enet_hw.c-847-\t\t\tnp = of_parse_phandle(dev-\u003eof_node, \"phy-handle\", i);\ndrivers/net/ethernet/apm/xgene/xgene_enet_hw.c:848:\t\t\tphy_dev = of_phy_connect(ndev, np,\ndrivers/net/ethernet/apm/xgene/xgene_enet_hw.c-849-\t\t\t\t\t\t \u0026xgene_enet_adjust_link,\n--\ndrivers/net/ethernet/apm/xgene/xgene_enet_hw.c-868-\t\tif (!phy_dev ||\ndrivers/net/ethernet/apm/xgene/xgene_enet_hw.c:869:\t\t    phy_connect_direct(ndev, phy_dev, \u0026xgene_enet_adjust_link,\ndrivers/net/ethernet/apm/xgene/xgene_enet_hw.c-870-\t\t\t\t       pdata-\u003ephy_mode)) {\n--\ndrivers/net/ethernet/apm/xgene/xgene_enet_hw.c=939=int xgene_enet_mdio_config(struct xgene_enet_pdata *pdata)\n--\ndrivers/net/ethernet/apm/xgene/xgene_enet_hw.c-965-\ndrivers/net/ethernet/apm/xgene/xgene_enet_hw.c:966:\tret = xgene_enet_phy_connect(ndev);\ndrivers/net/ethernet/apm/xgene/xgene_enet_hw.c-967-\tif (ret)\n--\ndrivers/net/ethernet/apm/xgene/xgene_enet_hw.h=426=bool xgene_ring_mgr_init(struct xgene_enet_pdata *p);\ndrivers/net/ethernet/apm/xgene/xgene_enet_hw.h:427:int xgene_enet_phy_connect(struct net_device *ndev);\ndrivers/net/ethernet/apm/xgene/xgene_enet_hw.h-428-void xgene_enet_phy_disconnect(struct xgene_enet_pdata *pdata);\n--\ndrivers/net/ethernet/apm/xgene/xgene_enet_main.c=1651=static void xgene_enet_check_phy_handle(struct xgene_enet_pdata *pdata)\n--\ndrivers/net/ethernet/apm/xgene/xgene_enet_main.c-1660-\ndrivers/net/ethernet/apm/xgene/xgene_enet_main.c:1661:\tret = xgene_enet_phy_connect(pdata-\u003endev);\ndrivers/net/ethernet/apm/xgene/xgene_enet_main.c-1662-\tif (!ret)\n--\ndrivers/net/ethernet/arc/emac_main.c=858=int arc_emac_probe(struct net_device *ndev, int interface)\n--\ndrivers/net/ethernet/arc/emac_main.c-988-\ndrivers/net/ethernet/arc/emac_main.c:989:\tphydev = of_phy_connect(ndev, phy_node, arc_emac_adjust_link, 0,\ndrivers/net/ethernet/arc/emac_main.c-990-\t\t\t\tinterface);\ndrivers/net/ethernet/arc/emac_main.c-991-\tif (!phydev) {\ndrivers/net/ethernet/arc/emac_main.c:992:\t\tdev_err(dev, \"of_phy_connect() failed\\n\");\ndrivers/net/ethernet/arc/emac_main.c-993-\t\terr = -ENODEV;\n--\ndrivers/net/ethernet/asix/ax88796c_main.c=966=static int ax88796c_probe(struct spi_device *spi)\n--\ndrivers/net/ethernet/asix/ax88796c_main.c-1076-\t\t ax_local-\u003emdiobus-\u003eid, AX88796C_PHY_ID);\ndrivers/net/ethernet/asix/ax88796c_main.c:1077:\tax_local-\u003ephydev = phy_connect(ax_local-\u003endev, phy_id,\ndrivers/net/ethernet/asix/ax88796c_main.c-1078-\t\t\t\t       ax88796c_handle_link_change,\n--\ndrivers/net/ethernet/asix/ax88796c_main.c-1094-\t\t   dev_name(\u0026spi-\u003edev));\ndrivers/net/ethernet/asix/ax88796c_main.c:1095:\tphy_attached_info(ax_local-\u003ephydev);\ndrivers/net/ethernet/asix/ax88796c_main.c-1096-\n--\ndrivers/net/ethernet/atheros/ag71xx.c=1404=static int ag71xx_open(struct net_device *ndev)\n--\ndrivers/net/ethernet/atheros/ag71xx.c-1409-\ndrivers/net/ethernet/atheros/ag71xx.c:1410:\tret = phylink_of_phy_connect(ag-\u003ephylink, ag-\u003epdev-\u003edev.of_node, 0);\ndrivers/net/ethernet/atheros/ag71xx.c-1411-\tif (ret) {\ndrivers/net/ethernet/atheros/ag71xx.c:1412:\t\tnetif_err(ag, link, ndev, \"phylink_of_phy_connect filed with err: %i\\n\",\ndrivers/net/ethernet/atheros/ag71xx.c-1413-\t\t\t  ret);\n--\ndrivers/net/ethernet/broadcom/asp2/bcmasp_intf.c=1039=static phy_interface_t bcmasp_phy_iface_for_connect(phy_interface_t mode)\n--\ndrivers/net/ethernet/broadcom/asp2/bcmasp_intf.c-1075-\ndrivers/net/ethernet/broadcom/asp2/bcmasp_intf.c:1076:static int bcmasp_phy_attach(struct bcmasp_intf *intf)\ndrivers/net/ethernet/broadcom/asp2/bcmasp_intf.c-1077-{\n--\ndrivers/net/ethernet/broadcom/asp2/bcmasp_intf.c-1084-\tphy_iface = bcmasp_phy_iface_for_connect(intf-\u003ephy_interface);\ndrivers/net/ethernet/broadcom/asp2/bcmasp_intf.c:1085:\tphydev = of_phy_connect(intf-\u003endev, intf-\u003ephy_dn,\ndrivers/net/ethernet/broadcom/asp2/bcmasp_intf.c-1086-\t\t\t\tbcmasp_adj_link, phy_flags,\n--\ndrivers/net/ethernet/broadcom/asp2/bcmasp_intf.c=1123=static int bcmasp_open(struct net_device *dev)\n--\ndrivers/net/ethernet/broadcom/asp2/bcmasp_intf.c-1141-\ndrivers/net/ethernet/broadcom/asp2/bcmasp_intf.c:1142:\tret = bcmasp_phy_attach(intf);\ndrivers/net/ethernet/broadcom/asp2/bcmasp_intf.c-1143-\tif (ret)\ndrivers/net/ethernet/broadcom/asp2/bcmasp_intf.c:1144:\t\tgoto err_phy_attach;\ndrivers/net/ethernet/broadcom/asp2/bcmasp_intf.c-1145-\n--\ndrivers/net/ethernet/broadcom/asp2/bcmasp_intf.c-1157-\ndrivers/net/ethernet/broadcom/asp2/bcmasp_intf.c:1158:err_phy_attach:\ndrivers/net/ethernet/broadcom/asp2/bcmasp_intf.c-1159-\tbcmasp_phy_hw_unprepare(intf);\n--\ndrivers/net/ethernet/broadcom/b44.c=2234=static int b44_register_phy_one(struct b44 *bp)\n--\ndrivers/net/ethernet/broadcom/b44.c-2280-\telse\ndrivers/net/ethernet/broadcom/b44.c:2281:\t\terr = phy_connect_direct(bp-\u003edev, phydev, \u0026b44_adjust_link,\ndrivers/net/ethernet/broadcom/b44.c-2282-\t\t\t\t\t PHY_INTERFACE_MODE_MII);\n--\ndrivers/net/ethernet/broadcom/b44.c-2298-\ndrivers/net/ethernet/broadcom/b44.c:2299:\tphy_attached_info(phydev);\ndrivers/net/ethernet/broadcom/b44.c-2300-\n--\ndrivers/net/ethernet/broadcom/bcm63xx_enet.c=890=static int bcm_enet_open(struct net_device *dev)\n--\ndrivers/net/ethernet/broadcom/bcm63xx_enet.c-909-\ndrivers/net/ethernet/broadcom/bcm63xx_enet.c:910:\t\tphydev = phy_connect(dev, phy_id, bcm_enet_adjust_phy_link,\ndrivers/net/ethernet/broadcom/bcm63xx_enet.c-911-\t\t\t\t     PHY_INTERFACE_MODE_MII);\n--\ndrivers/net/ethernet/broadcom/bcm63xx_enet.c-923-\ndrivers/net/ethernet/broadcom/bcm63xx_enet.c:924:\t\tphy_attached_info(phydev);\ndrivers/net/ethernet/broadcom/bcm63xx_enet.c-925-\n--\ndrivers/net/ethernet/broadcom/bcmsysport.c=1928=static int bcm_sysport_open(struct net_device *dev)\n--\ndrivers/net/ethernet/broadcom/bcmsysport.c-1966-\ndrivers/net/ethernet/broadcom/bcmsysport.c:1967:\tphydev = of_phy_connect(dev, priv-\u003ephy_dn, bcm_sysport_adj_link,\ndrivers/net/ethernet/broadcom/bcmsysport.c-1968-\t\t\t\t0, priv-\u003ephy_interface);\n--\ndrivers/net/ethernet/broadcom/bgmac-bcma.c=79=static void bcma_bgmac_cmn_maskset32(struct bgmac *bgmac, u16 offset, u32 mask,\n--\ndrivers/net/ethernet/broadcom/bgmac-bcma.c-84-\ndrivers/net/ethernet/broadcom/bgmac-bcma.c:85:static int bcma_phy_connect(struct bgmac *bgmac)\ndrivers/net/ethernet/broadcom/bgmac-bcma.c-86-{\n--\ndrivers/net/ethernet/broadcom/bgmac-bcma.c-99-\t\t\t bgmac-\u003ephyaddr);\ndrivers/net/ethernet/broadcom/bgmac-bcma.c:100:\t\tphy_dev = phy_connect(bgmac-\u003enet_dev, bus_id, bgmac_adjust_link,\ndrivers/net/ethernet/broadcom/bgmac-bcma.c-101-\t\t\t\t      PHY_INTERFACE_MODE_MII);\n--\ndrivers/net/ethernet/broadcom/bgmac-bcma.c-110-\t/* Assume a fixed link to the switch port */\ndrivers/net/ethernet/broadcom/bgmac-bcma.c:111:\treturn bgmac_phy_connect_direct(bgmac);\ndrivers/net/ethernet/broadcom/bgmac-bcma.c-112-}\n--\ndrivers/net/ethernet/broadcom/bgmac-bcma.c=124=static int bgmac_probe(struct bcma_device *core)\n--\ndrivers/net/ethernet/broadcom/bgmac-bcma.c-311-\tbgmac-\u003ecmn_maskset32 = bcma_bgmac_cmn_maskset32;\ndrivers/net/ethernet/broadcom/bgmac-bcma.c:312:\tbgmac-\u003ephy_connect = bcma_phy_connect;\ndrivers/net/ethernet/broadcom/bgmac-bcma.c-313-\n--\ndrivers/net/ethernet/broadcom/bgmac-platform.c=118=static void bgmac_nicpm_speed_set(struct net_device *net_dev)\n--\ndrivers/net/ethernet/broadcom/bgmac-platform.c-150-\ndrivers/net/ethernet/broadcom/bgmac-platform.c:151:static int platform_phy_connect(struct bgmac *bgmac)\ndrivers/net/ethernet/broadcom/bgmac-platform.c-152-{\n--\ndrivers/net/ethernet/broadcom/bgmac-platform.c=171=static int bgmac_probe(struct platform_device *pdev)\n--\ndrivers/net/ethernet/broadcom/bgmac-platform.c-242-\t\tof_node_put(phy_node);\ndrivers/net/ethernet/broadcom/bgmac-platform.c:243:\t\tbgmac-\u003ephy_connect = platform_phy_connect;\ndrivers/net/ethernet/broadcom/bgmac-platform.c-244-\t} else {\ndrivers/net/ethernet/broadcom/bgmac-platform.c:245:\t\tbgmac-\u003ephy_connect = bgmac_phy_connect_direct;\ndrivers/net/ethernet/broadcom/bgmac-platform.c-246-\t\tbgmac-\u003efeature_flags |= BGMAC_FEAT_FORCE_SPEED_2500;\n--\ndrivers/net/ethernet/broadcom/bgmac.c=1437=EXPORT_SYMBOL_GPL(bgmac_adjust_link);\ndrivers/net/ethernet/broadcom/bgmac.c-1438-\ndrivers/net/ethernet/broadcom/bgmac.c:1439:int bgmac_phy_connect_direct(struct bgmac *bgmac)\ndrivers/net/ethernet/broadcom/bgmac.c-1440-{\n--\ndrivers/net/ethernet/broadcom/bgmac.c-1454-\ndrivers/net/ethernet/broadcom/bgmac.c:1455:\terr = phy_connect_direct(bgmac-\u003enet_dev, phy_dev, bgmac_adjust_link,\ndrivers/net/ethernet/broadcom/bgmac.c-1456-\t\t\t\t PHY_INTERFACE_MODE_MII);\n--\ndrivers/net/ethernet/broadcom/bgmac.c-1463-}\ndrivers/net/ethernet/broadcom/bgmac.c:1464:EXPORT_SYMBOL_GPL(bgmac_phy_connect_direct);\ndrivers/net/ethernet/broadcom/bgmac.c-1465-\n--\ndrivers/net/ethernet/broadcom/bgmac.c=1487=int bgmac_enet_probe(struct bgmac *bgmac)\n--\ndrivers/net/ethernet/broadcom/bgmac.c-1532-\ndrivers/net/ethernet/broadcom/bgmac.c:1533:\terr = bgmac_phy_connect(bgmac);\ndrivers/net/ethernet/broadcom/bgmac.c-1534-\tif (err) {\n--\ndrivers/net/ethernet/broadcom/bgmac.h=439=struct bgmac {\n--\ndrivers/net/ethernet/broadcom/bgmac.h-495-\t\t\t      u32 set);\ndrivers/net/ethernet/broadcom/bgmac.h:496:\tint (*phy_connect)(struct bgmac *bgmac);\ndrivers/net/ethernet/broadcom/bgmac.h-497-};\n--\ndrivers/net/ethernet/broadcom/bgmac.h=502=void bgmac_adjust_link(struct net_device *net_dev);\ndrivers/net/ethernet/broadcom/bgmac.h:503:int bgmac_phy_connect_direct(struct bgmac *bgmac);\ndrivers/net/ethernet/broadcom/bgmac.h-504-int bgmac_enet_suspend(struct bgmac *bgmac);\n--\ndrivers/net/ethernet/broadcom/bgmac.h=583=static inline void bgmac_umac_maskset(struct bgmac *bgmac, u16 offset, u32 mask, u32 set)\n--\ndrivers/net/ethernet/broadcom/bgmac.h-587-\ndrivers/net/ethernet/broadcom/bgmac.h:588:static inline int bgmac_phy_connect(struct bgmac *bgmac)\ndrivers/net/ethernet/broadcom/bgmac.h-589-{\ndrivers/net/ethernet/broadcom/bgmac.h:590:\treturn bgmac-\u003ephy_connect(bgmac);\ndrivers/net/ethernet/broadcom/bgmac.h-591-}\n--\ndrivers/net/ethernet/broadcom/genet/bcmmii.c=301=int bcmgenet_mii_probe(struct net_device *dev)\n--\ndrivers/net/ethernet/broadcom/genet/bcmmii.c-350-\tif (dn) {\ndrivers/net/ethernet/broadcom/genet/bcmmii.c:351:\t\tphydev = of_phy_connect(dev, priv-\u003ephy_dn, bcmgenet_mii_setup,\ndrivers/net/ethernet/broadcom/genet/bcmmii.c-352-\t\t\t\t\tphy_flags, phy_iface);\n--\ndrivers/net/ethernet/broadcom/genet/bcmmii.c-380-\ndrivers/net/ethernet/broadcom/genet/bcmmii.c:381:\t\tret = phy_connect_direct(dev, phydev, bcmgenet_mii_setup,\ndrivers/net/ethernet/broadcom/genet/bcmmii.c-382-\t\t\t\t\t phy_iface);\n--\ndrivers/net/ethernet/broadcom/sb1250-mac.c=2324=static int sbmac_mii_probe(struct net_device *dev)\n--\ndrivers/net/ethernet/broadcom/sb1250-mac.c-2334-\ndrivers/net/ethernet/broadcom/sb1250-mac.c:2335:\tphy_dev = phy_connect(dev, dev_name(\u0026phy_dev-\u003emdio.dev),\ndrivers/net/ethernet/broadcom/sb1250-mac.c-2336-\t\t\t      \u0026sbmac_mii_poll, PHY_INTERFACE_MODE_GMII);\n--\ndrivers/net/ethernet/broadcom/sb1250-mac.c-2345-\ndrivers/net/ethernet/broadcom/sb1250-mac.c:2346:\tphy_attached_info(phy_dev);\ndrivers/net/ethernet/broadcom/sb1250-mac.c-2347-\n--\ndrivers/net/ethernet/broadcom/tg3.c=2084=static int tg3_phy_init(struct tg3 *tp)\n--\ndrivers/net/ethernet/broadcom/tg3.c-2096-\t/* Attach the MAC to the PHY. */\ndrivers/net/ethernet/broadcom/tg3.c:2097:\tphydev = phy_connect(tp-\u003edev, phydev_name(phydev),\ndrivers/net/ethernet/broadcom/tg3.c-2098-\t\t\t     tg3_adjust_link, phydev-\u003einterface);\n--\ndrivers/net/ethernet/broadcom/tg3.c-2124-\ndrivers/net/ethernet/broadcom/tg3.c:2125:\tphy_attached_info(phydev);\ndrivers/net/ethernet/broadcom/tg3.c-2126-\n--\ndrivers/net/ethernet/cadence/macb_main.c=982=static int macb_phylink_connect(struct macb *bp)\n--\ndrivers/net/ethernet/cadence/macb_main.c-989-\tif (dn)\ndrivers/net/ethernet/cadence/macb_main.c:990:\t\tret = phylink_of_phy_connect(bp-\u003ephylink, dn, 0);\ndrivers/net/ethernet/cadence/macb_main.c-991-\n--\ndrivers/net/ethernet/cavium/octeon/octeon_mgmt.c=945=static int octeon_mgmt_init_phy(struct net_device *netdev)\n--\ndrivers/net/ethernet/cavium/octeon/octeon_mgmt.c-955-\ndrivers/net/ethernet/cavium/octeon/octeon_mgmt.c:956:\tphydev = of_phy_connect(netdev, p-\u003ephy_np,\ndrivers/net/ethernet/cavium/octeon/octeon_mgmt.c-957-\t\t\t\tocteon_mgmt_adjust_link, 0,\n--\ndrivers/net/ethernet/cavium/thunder/thunder_bgx.c=1055=static int bgx_lmac_enable(struct bgx *bgx, u8 lmacid)\n--\ndrivers/net/ethernet/cavium/thunder/thunder_bgx.c-1119-\ndrivers/net/ethernet/cavium/thunder/thunder_bgx.c:1120:\t\tif (phy_connect_direct(lmac-\u003enetdev, lmac-\u003ephydev,\ndrivers/net/ethernet/cavium/thunder/thunder_bgx.c-1121-\t\t\t\t       bgx_lmac_handler,\n--\ndrivers/net/ethernet/cortina/gemini.c=361=static int gmac_setup_phy(struct net_device *netdev)\n--\ndrivers/net/ethernet/cortina/gemini.c-406-\tif (netif_msg_link(port))\ndrivers/net/ethernet/cortina/gemini.c:407:\t\tphy_attached_info(phy);\ndrivers/net/ethernet/cortina/gemini.c-408-\n--\ndrivers/net/ethernet/davicom/dm9051.c=1132=static void dm9051_handle_link_change(struct net_device *ndev)\n--\ndrivers/net/ethernet/davicom/dm9051.c-1151- */\ndrivers/net/ethernet/davicom/dm9051.c:1152:static int dm9051_phy_connect(struct board_info *db)\ndrivers/net/ethernet/davicom/dm9051.c-1153-{\n--\ndrivers/net/ethernet/davicom/dm9051.c-1158-\ndrivers/net/ethernet/davicom/dm9051.c:1159:\tdb-\u003ephydev = phy_connect(db-\u003endev, phy_id, dm9051_handle_link_change,\ndrivers/net/ethernet/davicom/dm9051.c-1160-\t\t\t\t PHY_INTERFACE_MODE_MII);\n--\ndrivers/net/ethernet/davicom/dm9051.c=1164=static int dm9051_probe(struct spi_device *spi)\n--\ndrivers/net/ethernet/davicom/dm9051.c-1208-\ndrivers/net/ethernet/davicom/dm9051.c:1209:\tret = dm9051_phy_connect(db);\ndrivers/net/ethernet/davicom/dm9051.c-1210-\tif (ret)\n--\ndrivers/net/ethernet/engleder/tsnep_main.c=241=static int tsnep_phy_open(struct tsnep_adapter *adapter)\n--\ndrivers/net/ethernet/engleder/tsnep_main.c-246-\ndrivers/net/ethernet/engleder/tsnep_main.c:247:\tretval = phy_connect_direct(adapter-\u003enetdev, adapter-\u003ephydev,\ndrivers/net/ethernet/engleder/tsnep_main.c-248-\t\t\t\t    tsnep_phy_link_status_change,\n--\ndrivers/net/ethernet/ethoc.c=699=static int ethoc_mdio_probe(struct net_device *dev)\n--\ndrivers/net/ethernet/ethoc.c-715-\ndrivers/net/ethernet/ethoc.c:716:\terr = phy_connect_direct(dev, phy, ethoc_mdio_poll,\ndrivers/net/ethernet/ethoc.c-717-\t\t\t\t PHY_INTERFACE_MODE_GMII);\n--\ndrivers/net/ethernet/faraday/ftgmac100.c=1497=static int ftgmac100_mii_probe(struct net_device *netdev)\n--\ndrivers/net/ethernet/faraday/ftgmac100.c-1541-\ndrivers/net/ethernet/faraday/ftgmac100.c:1542:\tphydev = phy_connect(netdev, phydev_name(phydev),\ndrivers/net/ethernet/faraday/ftgmac100.c-1543-\t\t\t     \u0026ftgmac100_adjust_link, phy_intf);\n--\ndrivers/net/ethernet/faraday/ftgmac100.c-1555-\t/* Display what we found */\ndrivers/net/ethernet/faraday/ftgmac100.c:1556:\tphy_attached_info(phydev);\ndrivers/net/ethernet/faraday/ftgmac100.c-1557-\n--\ndrivers/net/ethernet/faraday/ftgmac100.c=1848=static int ftgmac100_probe_ncsi(struct net_device *netdev,\n--\ndrivers/net/ethernet/faraday/ftgmac100.c-1872-\t}\ndrivers/net/ethernet/faraday/ftgmac100.c:1873:\terr = phy_connect_direct(netdev, phydev, ftgmac100_adjust_link,\ndrivers/net/ethernet/faraday/ftgmac100.c-1874-\t\t\t\t PHY_INTERFACE_MODE_RMII);\n--\ndrivers/net/ethernet/faraday/ftgmac100.c=1890=static int ftgmac100_probe_dt(struct net_device *netdev,\n--\ndrivers/net/ethernet/faraday/ftgmac100.c-1921-\t\t/* Display what we found */\ndrivers/net/ethernet/faraday/ftgmac100.c:1922:\t\tphy_attached_info(phy);\ndrivers/net/ethernet/faraday/ftgmac100.c-1923-\t\treturn 0;\n--\ndrivers/net/ethernet/freescale/dpaa/dpaa_eth.c=2941=static int dpaa_open(struct net_device *net_dev)\n--\ndrivers/net/ethernet/freescale/dpaa/dpaa_eth.c-2950-\ndrivers/net/ethernet/freescale/dpaa/dpaa_eth.c:2951:\terr = phylink_of_phy_connect(mac_dev-\u003ephylink,\ndrivers/net/ethernet/freescale/dpaa/dpaa_eth.c-2952-\t\t\t\t     mac_dev-\u003edev-\u003eof_node, 0);\n--\ndrivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c=560=int dpaa2_mac_connect(struct dpaa2_mac *mac)\n--\ndrivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c-634-\trtnl_lock();\ndrivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c:635:\terr = phylink_fwnode_phy_connect(mac-\u003ephylink, dpmac_node, 0);\ndrivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c-636-\trtnl_unlock();\ndrivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c-637-\tif (err) {\ndrivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c:638:\t\tnetdev_err(net_dev, \"phylink_fwnode_phy_connect() = %d\\n\", err);\ndrivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c-639-\t\tgoto err_phylink_destroy;\n--\ndrivers/net/ethernet/freescale/enetc/enetc.c=2935=static int enetc_phylink_connect(struct net_device *ndev)\n--\ndrivers/net/ethernet/freescale/enetc/enetc.c-2946-\ndrivers/net/ethernet/freescale/enetc/enetc.c:2947:\terr = phylink_of_phy_connect(priv-\u003ephylink, priv-\u003edev-\u003eof_node, 0);\ndrivers/net/ethernet/freescale/enetc/enetc.c-2948-\tif (err) {\n--\ndrivers/net/ethernet/freescale/enetc/enetc.c=3010=int enetc_open(struct net_device *ndev)\n--\ndrivers/net/ethernet/freescale/enetc/enetc.c-3028-\tif (err)\ndrivers/net/ethernet/freescale/enetc/enetc.c:3029:\t\tgoto err_phy_connect;\ndrivers/net/ethernet/freescale/enetc/enetc.c-3030-\n--\ndrivers/net/ethernet/freescale/enetc/enetc.c-3055-\t\tphylink_disconnect_phy(priv-\u003ephylink);\ndrivers/net/ethernet/freescale/enetc/enetc.c:3056:err_phy_connect:\ndrivers/net/ethernet/freescale/enetc/enetc.c-3057-\tenetc_free_irqs(priv);\n--\ndrivers/net/ethernet/freescale/fec_main.c=2981=static int fec_enet_mii_probe(struct net_device *ndev)\n--\ndrivers/net/ethernet/freescale/fec_main.c-2987-\tif (fep-\u003ephy_node) {\ndrivers/net/ethernet/freescale/fec_main.c:2988:\t\tphy_dev = of_phy_connect(ndev, fep-\u003ephy_node,\ndrivers/net/ethernet/freescale/fec_main.c-2989-\t\t\t\t\t \u0026fec_enet_adjust_link, 0,\n--\ndrivers/net/ethernet/freescale/fec_main.c-3009-\ndrivers/net/ethernet/freescale/fec_main.c:3010:\t\tret = phy_connect_direct(ndev, phy_dev, \u0026fec_enet_adjust_link,\ndrivers/net/ethernet/freescale/fec_main.c-3011-\t\t\t\t\t fep-\u003ephy_interface);\n--\ndrivers/net/ethernet/freescale/fec_main.c-3036-\ndrivers/net/ethernet/freescale/fec_main.c:3037:\tphy_attached_info(phy_dev);\ndrivers/net/ethernet/freescale/fec_main.c-3038-\n--\ndrivers/net/ethernet/freescale/fec_mpc52xx.c=216=static int mpc52xx_fec_open(struct net_device *dev)\n--\ndrivers/net/ethernet/freescale/fec_mpc52xx.c-222-\tif (priv-\u003ephy_node) {\ndrivers/net/ethernet/freescale/fec_mpc52xx.c:223:\t\tphydev = of_phy_connect(priv-\u003endev, priv-\u003ephy_node,\ndrivers/net/ethernet/freescale/fec_mpc52xx.c-224-\t\t\t\t\tmpc52xx_fec_adjust_link, 0, 0);\ndrivers/net/ethernet/freescale/fec_mpc52xx.c-225-\t\tif (!phydev) {\ndrivers/net/ethernet/freescale/fec_mpc52xx.c:226:\t\t\tdev_err(\u0026dev-\u003edev, \"of_phy_connect failed\\n\");\ndrivers/net/ethernet/freescale/fec_mpc52xx.c-227-\t\t\treturn -ENODEV;\n--\ndrivers/net/ethernet/freescale/fs_enet/fs_enet-main.c=656=static int fs_enet_open(struct net_device *dev)\n--\ndrivers/net/ethernet/freescale/fs_enet/fs_enet-main.c-677-\ndrivers/net/ethernet/freescale/fs_enet/fs_enet-main.c:678:\terr = phylink_of_phy_connect(fep-\u003ephylink, fep-\u003edev-\u003eof_node, 0);\ndrivers/net/ethernet/freescale/fs_enet/fs_enet-main.c-679-\tif (err) {\n--\ndrivers/net/ethernet/freescale/gianfar.c=1640=static int init_phy(struct net_device *dev)\n--\ndrivers/net/ethernet/freescale/gianfar.c-1650-\ndrivers/net/ethernet/freescale/gianfar.c:1651:\tphydev = of_phy_connect(dev, priv-\u003ephy_node, \u0026adjust_link, 0,\ndrivers/net/ethernet/freescale/gianfar.c-1652-\t\t\t\tinterface);\n--\ndrivers/net/ethernet/freescale/ucc_geth.c=3167=static int ucc_geth_open(struct net_device *dev)\n--\ndrivers/net/ethernet/freescale/ucc_geth.c-3180-\ndrivers/net/ethernet/freescale/ucc_geth.c:3181:\terr = phylink_of_phy_connect(ugeth-\u003ephylink, ugeth-\u003edev-\u003eof_node, 0);\ndrivers/net/ethernet/freescale/ucc_geth.c-3182-\tif (err) {\n--\ndrivers/net/ethernet/hisilicon/hibmcge/hbg_mdio.c=196=static void hbg_phy_disconnect(void *data)\n--\ndrivers/net/ethernet/hisilicon/hibmcge/hbg_mdio.c-200-\ndrivers/net/ethernet/hisilicon/hibmcge/hbg_mdio.c:201:static int hbg_phy_connect(struct hbg_priv *priv)\ndrivers/net/ethernet/hisilicon/hibmcge/hbg_mdio.c-202-{\n--\ndrivers/net/ethernet/hisilicon/hibmcge/hbg_mdio.c-206-\ndrivers/net/ethernet/hisilicon/hibmcge/hbg_mdio.c:207:\tret = phy_connect_direct(priv-\u003enetdev, phydev, hbg_phy_adjust_link,\ndrivers/net/ethernet/hisilicon/hibmcge/hbg_mdio.c-208-\t\t\t\t PHY_INTERFACE_MODE_SGMII);\n--\ndrivers/net/ethernet/hisilicon/hibmcge/hbg_mdio.c-217-\tphy_support_asym_pause(phydev);\ndrivers/net/ethernet/hisilicon/hibmcge/hbg_mdio.c:218:\tphy_attached_info(phydev);\ndrivers/net/ethernet/hisilicon/hibmcge/hbg_mdio.c-219-\n--\ndrivers/net/ethernet/hisilicon/hibmcge/hbg_mdio.c=238=static int hbg_fixed_phy_init(struct hbg_priv *priv)\n--\ndrivers/net/ethernet/hisilicon/hibmcge/hbg_mdio.c-262-\tpriv-\u003emac.phydev = phydev;\ndrivers/net/ethernet/hisilicon/hibmcge/hbg_mdio.c:263:\treturn hbg_phy_connect(priv);\ndrivers/net/ethernet/hisilicon/hibmcge/hbg_mdio.c-264-}\n--\ndrivers/net/ethernet/hisilicon/hibmcge/hbg_mdio.c=266=int hbg_mdio_init(struct hbg_priv *priv)\n--\ndrivers/net/ethernet/hisilicon/hibmcge/hbg_mdio.c-302-\thbg_mdio_init_hw(priv);\ndrivers/net/ethernet/hisilicon/hibmcge/hbg_mdio.c:303:\treturn hbg_phy_connect(priv);\ndrivers/net/ethernet/hisilicon/hibmcge/hbg_mdio.c-304-}\n--\ndrivers/net/ethernet/hisilicon/hip04_eth.c=898=static int hip04_mac_probe(struct platform_device *pdev)\n--\ndrivers/net/ethernet/hisilicon/hip04_eth.c-980-\tif (priv-\u003ephy_node) {\ndrivers/net/ethernet/hisilicon/hip04_eth.c:981:\t\tpriv-\u003ephy = of_phy_connect(ndev, priv-\u003ephy_node,\ndrivers/net/ethernet/hisilicon/hip04_eth.c-982-\t\t\t\t\t   \u0026hip04_adjust_link,\n--\ndrivers/net/ethernet/hisilicon/hisi_femac.c=768=static int hisi_femac_drv_probe(struct platform_device *pdev)\n--\ndrivers/net/ethernet/hisilicon/hisi_femac.c-839-\ndrivers/net/ethernet/hisilicon/hisi_femac.c:840:\tphy_attached_print(phy, \"phy_id=0x%.8lx, phy_mode=%s\\n\",\ndrivers/net/ethernet/hisilicon/hisi_femac.c-841-\t\t\t   (unsigned long)phy-\u003ephy_id,\n--\ndrivers/net/ethernet/hisilicon/hix5hd2_gmac.c=826=static int hix5hd2_net_open(struct net_device *dev)\n--\ndrivers/net/ethernet/hisilicon/hix5hd2_gmac.c-844-\ndrivers/net/ethernet/hisilicon/hix5hd2_gmac.c:845:\tphy = of_phy_connect(dev, priv-\u003ephy_node,\ndrivers/net/ethernet/hisilicon/hix5hd2_gmac.c-846-\t\t\t     \u0026hix5hd2_adjust_link, 0, priv-\u003ephy_mode);\n--\ndrivers/net/ethernet/hisilicon/hns/hns_enet.c=1159=int hns_nic_init_phy(struct net_device *ndev, struct hnae_handle *h)\n--\ndrivers/net/ethernet/hisilicon/hns/hns_enet.c-1177-\ndrivers/net/ethernet/hisilicon/hns/hns_enet.c:1178:\t\tret = phy_connect_direct(ndev, phy_dev, hns_nic_adjust_link,\ndrivers/net/ethernet/hisilicon/hns/hns_enet.c-1179-\t\t\t\t\t h-\u003ephy_if);\ndrivers/net/ethernet/hisilicon/hns/hns_enet.c-1180-\t} else {\n\n"
}

gemini-3.8-flash

null

null

							input: 27968
							output: 30
							thoughts: 235
						

**My Line of Inquiry: Unpacking the Marvell PHY Driver Registration**

Okay, so I'm trying to figure out how `marvell_drivers` get hooked up and initialized. The first thing I see is this `module_phy_driver(marvell_drivers);` call within `marvell.c`. Right, so `marvell.c` registers the `struct phy_driver marvell_drivers[]` array with phylib. Standard stuff.

Now, how does phylib *find* the Marvell PHY? Ah, right. When an MDIO bus gets probed or registered, it iterates through addresses 0 to 31. It reads `MII_PHYSID1` and `MII_PHYSID2` at each address. If those ID values match a known Marvell PHY (like, say, `MARVELL_PHY_ID_88E1318S = 0x01410e10`), then it declares a match, links the Marvell driver to the phy device and binds them. Clever.

But now I'm starting to think about how this could be exploited. Can userspace or something like syzkaller *create* an MDIO bus with a Marvell PHY? Or can I emulate a device in QEMU and force a Marvell PHY to be "present"? I need to understand that.

And, stepping back further, what *other* drivers in the kernel even use these Marvell PHYs? Gotta get the broader picture. Okay, let's fire up a kernel tree search and look for that PHY ID, `MARVELL_PHY_ID_88E1318S`. See what other drivers are using this.

{
  "Expression": "MARVELL_PHY_ID_88E1318S"
}

{
  "Output": "drivers/net/phy/marvell.c=843=static void marvell_config_led(struct phy_device *phydev)\n--\ndrivers/net/phy/marvell.c-850-\tcase MARVELL_PHY_FAMILY_ID(MARVELL_PHY_ID_88E1121R):\ndrivers/net/phy/marvell.c:851:\tcase MARVELL_PHY_FAMILY_ID(MARVELL_PHY_ID_88E1318S):\ndrivers/net/phy/marvell.c-852-\t\tdef_config = MII_88E1121_PHY_LED_DEF;\n--\ndrivers/net/phy/marvell.c=3696=static struct phy_driver marvell_drivers[] = {\n--\ndrivers/net/phy/marvell.c-3840-\t{\ndrivers/net/phy/marvell.c:3841:\t\t.phy_id = MARVELL_PHY_ID_88E1318S,\ndrivers/net/phy/marvell.c-3842-\t\t.phy_id_mask = MARVELL_PHY_ID_MASK,\n--\ndrivers/net/phy/marvell.c=4208=static const struct mdio_device_id __maybe_unused marvell_tbl[] = {\n--\ndrivers/net/phy/marvell.c-4218-\t{ MARVELL_PHY_ID_88E1240, MARVELL_PHY_ID_MASK },\ndrivers/net/phy/marvell.c:4219:\t{ MARVELL_PHY_ID_88E1318S, MARVELL_PHY_ID_MASK },\ndrivers/net/phy/marvell.c-4220-\t{ MARVELL_PHY_ID_88E1116R, MARVELL_PHY_ID_MASK },\n--\ninclude/linux/marvell_phy.h-17-#define MARVELL_PHY_ID_88E1240\t\t0x01410e30\ninclude/linux/marvell_phy.h:18:#define MARVELL_PHY_ID_88E1318S\t\t0x01410e90\ninclude/linux/marvell_phy.h-19-#define MARVELL_PHY_ID_88E1340S\t\t0x01410dc0\n"
}

gemini-3.8-flash

null

null

							input: 29203
							output: 29
							thoughts: 39
						

Here's a summary of my thinking, expressed in the first person:

**Investigating a Related Function Call**

Okay, so we're looking at `m88e1318_set_wol`. That's the primary focus right now. But hold on, I need to zoom out a bit. Is this the *only* place this function is used? I've got to consider the broader implications. The goal is to see if any other PHYs are affected by this same issue.

Let me think... what other PHYs could also use this same function or similar functionality? Right, I need to cast my mind back, maybe check the codebase, and see if I can find another PHY ID. Let's start with `MARVELL_PHY_ID_88E1510`. Now *that* is something to check out. I need to investigate if it also makes a call to `m88e1318_set_wol`. If so, I need to know why and if this issue may also be relevant.

{
  "Expression": "MARVELL_PHY_ID_88E1510"
}

{
  "Output": "drivers/net/phy/marvell.c=843=static void marvell_config_led(struct phy_device *phydev)\n--\ndrivers/net/phy/marvell.c-858-\t */\ndrivers/net/phy/marvell.c:859:\tcase MARVELL_PHY_FAMILY_ID(MARVELL_PHY_ID_88E1510):\ndrivers/net/phy/marvell.c-860-\t\tif (phydev-\u003edev_flags \u0026 MARVELL_PHY_LED0_LINK_LED1_ACTIVE)\n--\ndrivers/net/phy/marvell.c=3696=static struct phy_driver marvell_drivers[] = {\n--\ndrivers/net/phy/marvell.c-3946-\t{\ndrivers/net/phy/marvell.c:3947:\t\t.phy_id = MARVELL_PHY_ID_88E1510,\ndrivers/net/phy/marvell.c-3948-\t\t.phy_id_mask = MARVELL_PHY_ID_MASK,\n--\ndrivers/net/phy/marvell.c=4208=static const struct mdio_device_id __maybe_unused marvell_tbl[] = {\n--\ndrivers/net/phy/marvell.c-4220-\t{ MARVELL_PHY_ID_88E1116R, MARVELL_PHY_ID_MASK },\ndrivers/net/phy/marvell.c:4221:\t{ MARVELL_PHY_ID_88E1510, MARVELL_PHY_ID_MASK },\ndrivers/net/phy/marvell.c-4222-\t{ MARVELL_PHY_ID_88E1540, MARVELL_PHY_ID_MASK },\n--\ninclude/linux/marvell_phy.h-20-#define MARVELL_PHY_ID_88E1116R\t\t0x01410e40\ninclude/linux/marvell_phy.h:21:#define MARVELL_PHY_ID_88E1510\t\t0x01410dd0\ninclude/linux/marvell_phy.h-22-#define MARVELL_PHY_ID_88E1540\t\t0x01410eb0\n"
}

gemini-3.8-flash

null

null

							input: 30075
							output: 31
							thoughts: 57
						

**Instantiating a Marvell PHY: A Rapid-Fire Exploration**

Okay, so I'm thinking about how to get this Marvell PHY instantiated. The first question that pops up is how do we actually *do* it? Hmm, and then the brain takes a slight detour, considering USB...does USB ever act as an MDIO/PHY adapter, or does it ever plug into DSA? Wait a second, could a USB device, in theory, create an MDIO bus *itself* and then interface with the Marvell PHY? That's an interesting possibility! Time to dig into the drivers...let's go poke around in drivers/net/usb and see what we can find. I have a feeling we will see something promising in there!

{
  "Expression": "mii_bus|mdio",
  "PathPrefix": "drivers/net/usb"
}

{
  "Output": "\nFull output is too long, showing 500 out of 1105 lines.\nUse more precise expression if possible.\n\ndrivers/net/usb/aqc111.c=266=static int aqc111_get_link_ksettings(struct net_device *net,\n--\ndrivers/net/usb/aqc111.c-290-\ndrivers/net/usb/aqc111.c:291:\telk-\u003ebase.mdio_support = 0x00; /*Not supported*/\ndrivers/net/usb/aqc111.c-292-\n--\ndrivers/net/usb/asix.h=178=struct asix_common_private {\n--\ndrivers/net/usb/asix.h-184-\tstruct asix_rx_fixup_info rx_fixup_info;\ndrivers/net/usb/asix.h:185:\tstruct mii_bus *mdio;\ndrivers/net/usb/asix.h-186-\tstruct phy_device *phydev;\n--\ndrivers/net/usb/asix.h=229=void asix_set_multicast(struct net_device *net);\ndrivers/net/usb/asix.h-230-\ndrivers/net/usb/asix.h:231:int asix_mdio_read(struct net_device *netdev, int phy_id, int loc);\ndrivers/net/usb/asix.h:232:void asix_mdio_write(struct net_device *netdev, int phy_id, int loc, int val);\ndrivers/net/usb/asix.h-233-\ndrivers/net/usb/asix.h:234:int asix_mdio_bus_read(struct mii_bus *bus, int phy_id, int regnum);\ndrivers/net/usb/asix.h:235:int asix_mdio_bus_write(struct mii_bus *bus, int phy_id, int regnum, u16 val);\ndrivers/net/usb/asix.h-236-\ndrivers/net/usb/asix.h:237:int asix_mdio_read_nopm(struct net_device *netdev, int phy_id, int loc);\ndrivers/net/usb/asix.h:238:void asix_mdio_write_nopm(struct net_device *netdev, int phy_id, int loc,\ndrivers/net/usb/asix.h-239-\t\t\t  int val);\n--\ndrivers/net/usb/asix_common.c=441=void asix_set_multicast(struct net_device *net)\n--\ndrivers/net/usb/asix_common.c-479-\ndrivers/net/usb/asix_common.c:480:static int __asix_mdio_read(struct net_device *netdev, int phy_id, int loc,\ndrivers/net/usb/asix_common.c-481-\t\t\t    bool in_pm)\n--\ndrivers/net/usb/asix_common.c-503-\ndrivers/net/usb/asix_common.c:504:\tnetdev_dbg(dev-\u003enet, \"asix_mdio_read() phy_id=0x%02x, loc=0x%02x, returns=0x%04x\\n\",\ndrivers/net/usb/asix_common.c-505-\t\t\tphy_id, loc, le16_to_cpu(res));\n--\ndrivers/net/usb/asix_common.c-509-\ndrivers/net/usb/asix_common.c:510:int asix_mdio_read(struct net_device *netdev, int phy_id, int loc)\ndrivers/net/usb/asix_common.c-511-{\ndrivers/net/usb/asix_common.c:512:\treturn __asix_mdio_read(netdev, phy_id, loc, false);\ndrivers/net/usb/asix_common.c-513-}\ndrivers/net/usb/asix_common.c-514-\ndrivers/net/usb/asix_common.c:515:static int __asix_mdio_write(struct net_device *netdev, int phy_id, int loc,\ndrivers/net/usb/asix_common.c-516-\t\t\t     int val, bool in_pm)\n--\ndrivers/net/usb/asix_common.c-521-\ndrivers/net/usb/asix_common.c:522:\tnetdev_dbg(dev-\u003enet, \"asix_mdio_write() phy_id=0x%02x, loc=0x%02x, val=0x%04x\\n\",\ndrivers/net/usb/asix_common.c-523-\t\t\tphy_id, loc, val);\n--\ndrivers/net/usb/asix_common.c-542-\ndrivers/net/usb/asix_common.c:543:void asix_mdio_write(struct net_device *netdev, int phy_id, int loc, int val)\ndrivers/net/usb/asix_common.c-544-{\ndrivers/net/usb/asix_common.c:545:\t__asix_mdio_write(netdev, phy_id, loc, val, false);\ndrivers/net/usb/asix_common.c-546-}\n--\ndrivers/net/usb/asix_common.c-548-/* MDIO read and write wrappers for phylib */\ndrivers/net/usb/asix_common.c:549:int asix_mdio_bus_read(struct mii_bus *bus, int phy_id, int regnum)\ndrivers/net/usb/asix_common.c-550-{\n--\ndrivers/net/usb/asix_common.c-552-\ndrivers/net/usb/asix_common.c:553:\treturn __asix_mdio_read(priv-\u003enet, phy_id, regnum, false);\ndrivers/net/usb/asix_common.c-554-}\ndrivers/net/usb/asix_common.c-555-\ndrivers/net/usb/asix_common.c:556:int asix_mdio_bus_write(struct mii_bus *bus, int phy_id, int regnum, u16 val)\ndrivers/net/usb/asix_common.c-557-{\n--\ndrivers/net/usb/asix_common.c-559-\ndrivers/net/usb/asix_common.c:560:\treturn __asix_mdio_write(priv-\u003enet, phy_id, regnum, val, false);\ndrivers/net/usb/asix_common.c-561-}\ndrivers/net/usb/asix_common.c-562-\ndrivers/net/usb/asix_common.c:563:int asix_mdio_read_nopm(struct net_device *netdev, int phy_id, int loc)\ndrivers/net/usb/asix_common.c-564-{\ndrivers/net/usb/asix_common.c:565:\treturn __asix_mdio_read(netdev, phy_id, loc, true);\ndrivers/net/usb/asix_common.c-566-}\n--\ndrivers/net/usb/asix_common.c=568=void\ndrivers/net/usb/asix_common.c:569:asix_mdio_write_nopm(struct net_device *netdev, int phy_id, int loc, int val)\ndrivers/net/usb/asix_common.c-570-{\ndrivers/net/usb/asix_common.c:571:\t__asix_mdio_write(netdev, phy_id, loc, val, true);\ndrivers/net/usb/asix_common.c-572-}\n--\ndrivers/net/usb/asix_devices.c=70=static u32 asix_get_phyid(struct usbnet *dev)\n--\ndrivers/net/usb/asix_devices.c-77-\tfor (i = 0; i \u003c 100; i++) {\ndrivers/net/usb/asix_devices.c:78:\t\tphy_reg = asix_mdio_read(dev-\u003enet, dev-\u003emii.phy_id, MII_PHYSID1);\ndrivers/net/usb/asix_devices.c-79-\t\tif (phy_reg \u003c 0)\n--\ndrivers/net/usb/asix_devices.c-90-\ndrivers/net/usb/asix_devices.c:91:\tphy_reg = asix_mdio_read(dev-\u003enet, dev-\u003emii.phy_id, MII_PHYSID2);\ndrivers/net/usb/asix_devices.c-92-\tif (phy_reg \u003c 0)\n--\ndrivers/net/usb/asix_devices.c=190=static void asix_phy_reset(struct usbnet *dev, unsigned int reset_bits)\n--\ndrivers/net/usb/asix_devices.c-193-\ndrivers/net/usb/asix_devices.c:194:\tasix_mdio_write(dev-\u003enet, dev-\u003emii.phy_id, MII_BMCR, reset_bits);\ndrivers/net/usb/asix_devices.c-195-\n--\ndrivers/net/usb/asix_devices.c-200-\twhile (timeout--) {\ndrivers/net/usb/asix_devices.c:201:\t\tif (asix_mdio_read(dev-\u003enet, dev-\u003emii.phy_id, MII_BMCR)\ndrivers/net/usb/asix_devices.c-202-\t\t\t\t\t\t\t\u0026 BMCR_RESET)\n--\ndrivers/net/usb/asix_devices.c=212=static int ax88172_bind(struct usbnet *dev, struct usb_interface *intf)\n--\ndrivers/net/usb/asix_devices.c-248-\tdev-\u003emii.dev = dev-\u003enet;\ndrivers/net/usb/asix_devices.c:249:\tdev-\u003emii.mdio_read = asix_mdio_read;\ndrivers/net/usb/asix_devices.c:250:\tdev-\u003emii.mdio_write = asix_mdio_write;\ndrivers/net/usb/asix_devices.c-251-\tdev-\u003emii.phy_id_mask = 0x3f;\n--\ndrivers/net/usb/asix_devices.c-263-\tasix_phy_reset(dev, BMCR_RESET);\ndrivers/net/usb/asix_devices.c:264:\tasix_mdio_write(dev-\u003enet, dev-\u003emii.phy_id, MII_ADVERTISE,\ndrivers/net/usb/asix_devices.c-265-\t\tADVERTISE_ALL | ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP);\n--\ndrivers/net/usb/asix_devices.c=362=static int ax88772_hw_reset(struct usbnet *dev, int in_pm)\n--\ndrivers/net/usb/asix_devices.c-406-\ndrivers/net/usb/asix_devices.c:407:\tif (in_pm \u0026\u0026 (!asix_mdio_read_nopm(dev-\u003enet, dev-\u003emii.phy_id,\ndrivers/net/usb/asix_devices.c-408-\t\t\t\t\t   MII_PHYSID1))){\n--\ndrivers/net/usb/asix_devices.c=456=static int ax88772a_hw_reset(struct usbnet *dev, int in_pm)\n--\ndrivers/net/usb/asix_devices.c-496-\ndrivers/net/usb/asix_devices.c:497:\tif (in_pm \u0026\u0026 (!asix_mdio_read_nopm(dev-\u003enet, dev-\u003emii.phy_id,\ndrivers/net/usb/asix_devices.c-498-\t\t\t\t\t   MII_PHYSID1))) {\n--\ndrivers/net/usb/asix_devices.c-512-\t\t/* Check if the PHY registers have default settings */\ndrivers/net/usb/asix_devices.c:513:\t\tphy14h = asix_mdio_read_nopm(dev-\u003enet, dev-\u003emii.phy_id,\ndrivers/net/usb/asix_devices.c-514-\t\t\t\t\t     AX88772A_PHY14H);\ndrivers/net/usb/asix_devices.c:515:\t\tphy15h = asix_mdio_read_nopm(dev-\u003enet, dev-\u003emii.phy_id,\ndrivers/net/usb/asix_devices.c-516-\t\t\t\t\t     AX88772A_PHY15H);\ndrivers/net/usb/asix_devices.c:517:\t\tphy16h = asix_mdio_read_nopm(dev-\u003enet, dev-\u003emii.phy_id,\ndrivers/net/usb/asix_devices.c-518-\t\t\t\t\t     AX88772A_PHY16H);\n--\ndrivers/net/usb/asix_devices.c-525-\t\tif (phy14h != AX88772A_PHY14H_DEFAULT)\ndrivers/net/usb/asix_devices.c:526:\t\t\tasix_mdio_write_nopm(dev-\u003enet, dev-\u003emii.phy_id,\ndrivers/net/usb/asix_devices.c-527-\t\t\t\t\t     AX88772A_PHY14H,\n--\ndrivers/net/usb/asix_devices.c-529-\t\tif (phy15h != AX88772A_PHY15H_DEFAULT)\ndrivers/net/usb/asix_devices.c:530:\t\t\tasix_mdio_write_nopm(dev-\u003enet, dev-\u003emii.phy_id,\ndrivers/net/usb/asix_devices.c-531-\t\t\t\t\t     AX88772A_PHY15H,\n--\ndrivers/net/usb/asix_devices.c-533-\t\tif (phy16h != AX88772A_PHY16H_DEFAULT)\ndrivers/net/usb/asix_devices.c:534:\t\t\tasix_mdio_write_nopm(dev-\u003enet, dev-\u003emii.phy_id,\ndrivers/net/usb/asix_devices.c-535-\t\t\t\t\t     AX88772A_PHY16H,\n--\ndrivers/net/usb/asix_devices.c=658=static int asix_resume(struct usb_interface *intf)\n--\ndrivers/net/usb/asix_devices.c-668-\ndrivers/net/usb/asix_devices.c:669:static int ax88772_init_mdio(struct usbnet *dev)\ndrivers/net/usb/asix_devices.c-670-{\n--\ndrivers/net/usb/asix_devices.c-673-\ndrivers/net/usb/asix_devices.c:674:\tpriv-\u003emdio = mdiobus_alloc();\ndrivers/net/usb/asix_devices.c:675:\tif (!priv-\u003emdio)\ndrivers/net/usb/asix_devices.c-676-\t\treturn -ENOMEM;\ndrivers/net/usb/asix_devices.c-677-\ndrivers/net/usb/asix_devices.c:678:\tpriv-\u003emdio-\u003epriv = dev;\ndrivers/net/usb/asix_devices.c:679:\tpriv-\u003emdio-\u003eread = \u0026asix_mdio_bus_read;\ndrivers/net/usb/asix_devices.c:680:\tpriv-\u003emdio-\u003ewrite = \u0026asix_mdio_bus_write;\ndrivers/net/usb/asix_devices.c:681:\tpriv-\u003emdio-\u003ename = \"Asix MDIO Bus\";\ndrivers/net/usb/asix_devices.c:682:\tpriv-\u003emdio-\u003ephy_mask = ~(BIT(priv-\u003ephy_addr \u0026 0x1f) | BIT(AX_EMBD_PHY_ADDR));\ndrivers/net/usb/asix_devices.c-683-\t/* mii bus name is usb-\u003cusb bus number\u003e-\u003cusb device number\u003e */\ndrivers/net/usb/asix_devices.c:684:\tsnprintf(priv-\u003emdio-\u003eid, MII_BUS_ID_SIZE, \"usb-%03d:%03d\",\ndrivers/net/usb/asix_devices.c-685-\t\t dev-\u003eudev-\u003ebus-\u003ebusnum, dev-\u003eudev-\u003edevnum);\ndrivers/net/usb/asix_devices.c-686-\ndrivers/net/usb/asix_devices.c:687:\tret = mdiobus_register(priv-\u003emdio);\ndrivers/net/usb/asix_devices.c-688-\tif (ret) {\ndrivers/net/usb/asix_devices.c-689-\t\tnetdev_err(dev-\u003enet, \"Could not register MDIO bus (err %d)\\n\", ret);\ndrivers/net/usb/asix_devices.c:690:\t\tmdiobus_free(priv-\u003emdio);\ndrivers/net/usb/asix_devices.c:691:\t\tpriv-\u003emdio = NULL;\ndrivers/net/usb/asix_devices.c-692-\t}\n--\ndrivers/net/usb/asix_devices.c-696-\ndrivers/net/usb/asix_devices.c:697:static void ax88772_mdio_unregister(struct asix_common_private *priv)\ndrivers/net/usb/asix_devices.c-698-{\ndrivers/net/usb/asix_devices.c:699:\tmdiobus_unregister(priv-\u003emdio);\ndrivers/net/usb/asix_devices.c:700:\tmdiobus_free(priv-\u003emdio);\ndrivers/net/usb/asix_devices.c-701-}\n--\ndrivers/net/usb/asix_devices.c=703=static int ax88772_init_phy(struct usbnet *dev)\n--\ndrivers/net/usb/asix_devices.c-707-\ndrivers/net/usb/asix_devices.c:708:\tpriv-\u003ephydev = mdiobus_get_phy(priv-\u003emdio, priv-\u003ephy_addr);\ndrivers/net/usb/asix_devices.c-709-\tif (!priv-\u003ephydev) {\n--\ndrivers/net/usb/asix_devices.c-731-\t */\ndrivers/net/usb/asix_devices.c:732:\tpriv-\u003ephydev_int = mdiobus_get_phy(priv-\u003emdio, AX_EMBD_PHY_ADDR);\ndrivers/net/usb/asix_devices.c-733-\tif (!priv-\u003ephydev_int) {\n--\ndrivers/net/usb/asix_devices.c=829=static int ax88772_bind(struct usbnet *dev, struct usb_interface *intf)\n--\ndrivers/net/usb/asix_devices.c-916-\ndrivers/net/usb/asix_devices.c:917:\tret = ax88772_init_mdio(dev);\ndrivers/net/usb/asix_devices.c-918-\tif (ret)\ndrivers/net/usb/asix_devices.c:919:\t\tgoto mdio_err;\ndrivers/net/usb/asix_devices.c-920-\n--\ndrivers/net/usb/asix_devices.c-940-phylink_err:\ndrivers/net/usb/asix_devices.c:941:\tax88772_mdio_unregister(priv);\ndrivers/net/usb/asix_devices.c:942:mdio_err:\ndrivers/net/usb/asix_devices.c-943-\treturn ret;\n--\ndrivers/net/usb/asix_devices.c=955=static void ax88772_unbind(struct usbnet *dev, struct usb_interface *intf)\n--\ndrivers/net/usb/asix_devices.c-962-\tphylink_destroy(priv-\u003ephylink);\ndrivers/net/usb/asix_devices.c:963:\tax88772_mdio_unregister(priv);\ndrivers/net/usb/asix_devices.c-964-\tasix_rx_fixup_common_free(dev-\u003edriver_priv);\n--\ndrivers/net/usb/asix_devices.c=990=static int marvell_phy_init(struct usbnet *dev)\n--\ndrivers/net/usb/asix_devices.c-996-\ndrivers/net/usb/asix_devices.c:997:\treg = asix_mdio_read(dev-\u003enet, dev-\u003emii.phy_id, MII_MARVELL_STATUS);\ndrivers/net/usb/asix_devices.c-998-\tnetdev_dbg(dev-\u003enet, \"MII_MARVELL_STATUS = 0x%04x\\n\", reg);\ndrivers/net/usb/asix_devices.c-999-\ndrivers/net/usb/asix_devices.c:1000:\tasix_mdio_write(dev-\u003enet, dev-\u003emii.phy_id, MII_MARVELL_CTRL,\ndrivers/net/usb/asix_devices.c-1001-\t\t\tMARVELL_CTRL_RXDELAY | MARVELL_CTRL_TXDELAY);\n--\ndrivers/net/usb/asix_devices.c-1003-\tif (data-\u003eledmode) {\ndrivers/net/usb/asix_devices.c:1004:\t\treg = asix_mdio_read(dev-\u003enet, dev-\u003emii.phy_id,\ndrivers/net/usb/asix_devices.c-1005-\t\t\tMII_MARVELL_LED_CTRL);\n--\ndrivers/net/usb/asix_devices.c-1009-\t\treg |= (1 + 0x0100);\ndrivers/net/usb/asix_devices.c:1010:\t\tasix_mdio_write(dev-\u003enet, dev-\u003emii.phy_id,\ndrivers/net/usb/asix_devices.c-1011-\t\t\tMII_MARVELL_LED_CTRL, reg);\ndrivers/net/usb/asix_devices.c-1012-\ndrivers/net/usb/asix_devices.c:1013:\t\treg = asix_mdio_read(dev-\u003enet, dev-\u003emii.phy_id,\ndrivers/net/usb/asix_devices.c-1014-\t\t\tMII_MARVELL_LED_CTRL);\n--\ndrivers/net/usb/asix_devices.c=1021=static int rtl8211cl_phy_init(struct usbnet *dev)\n--\ndrivers/net/usb/asix_devices.c-1026-\ndrivers/net/usb/asix_devices.c:1027:\tasix_mdio_write (dev-\u003enet, dev-\u003emii.phy_id, 0x1f, 0x0005);\ndrivers/net/usb/asix_devices.c:1028:\tasix_mdio_write (dev-\u003enet, dev-\u003emii.phy_id, 0x0c, 0);\ndrivers/net/usb/asix_devices.c:1029:\tasix_mdio_write (dev-\u003enet, dev-\u003emii.phy_id, 0x01,\ndrivers/net/usb/asix_devices.c:1030:\t\tasix_mdio_read (dev-\u003enet, dev-\u003emii.phy_id, 0x01) | 0x0080);\ndrivers/net/usb/asix_devices.c:1031:\tasix_mdio_write (dev-\u003enet, dev-\u003emii.phy_id, 0x1f, 0);\ndrivers/net/usb/asix_devices.c-1032-\ndrivers/net/usb/asix_devices.c-1033-\tif (data-\u003eledmode == 12) {\ndrivers/net/usb/asix_devices.c:1034:\t\tasix_mdio_write (dev-\u003enet, dev-\u003emii.phy_id, 0x1f, 0x0002);\ndrivers/net/usb/asix_devices.c:1035:\t\tasix_mdio_write (dev-\u003enet, dev-\u003emii.phy_id, 0x1a, 0x00cb);\ndrivers/net/usb/asix_devices.c:1036:\t\tasix_mdio_write (dev-\u003enet, dev-\u003emii.phy_id, 0x1f, 0);\ndrivers/net/usb/asix_devices.c-1037-\t}\n--\ndrivers/net/usb/asix_devices.c=1042=static int marvell_led_status(struct usbnet *dev, u16 speed)\ndrivers/net/usb/asix_devices.c-1043-{\ndrivers/net/usb/asix_devices.c:1044:\tu16 reg = asix_mdio_read(dev-\u003enet, dev-\u003emii.phy_id, MARVELL_LED_MANUAL);\ndrivers/net/usb/asix_devices.c-1045-\n--\ndrivers/net/usb/asix_devices.c-1062-\tnetdev_dbg(dev-\u003enet, \"marvell_led_status() writing 0x%04x\\n\", reg);\ndrivers/net/usb/asix_devices.c:1063:\tasix_mdio_write(dev-\u003enet, dev-\u003emii.phy_id, MARVELL_LED_MANUAL, reg);\ndrivers/net/usb/asix_devices.c-1064-\n--\ndrivers/net/usb/asix_devices.c=1068=static int ax88178_reset(struct usbnet *dev)\n--\ndrivers/net/usb/asix_devices.c-1141-\tasix_phy_reset(dev, BMCR_RESET | BMCR_ANENABLE);\ndrivers/net/usb/asix_devices.c:1142:\tasix_mdio_write(dev-\u003enet, dev-\u003emii.phy_id, MII_ADVERTISE,\ndrivers/net/usb/asix_devices.c-1143-\t\t\tADVERTISE_ALL | ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP);\ndrivers/net/usb/asix_devices.c:1144:\tasix_mdio_write(dev-\u003enet, dev-\u003emii.phy_id, MII_CTRL1000,\ndrivers/net/usb/asix_devices.c-1145-\t\t\tADVERTISE_1000FULL);\n--\ndrivers/net/usb/asix_devices.c=1271=static int ax88178_bind(struct usbnet *dev, struct usb_interface *intf)\n--\ndrivers/net/usb/asix_devices.c-1290-\tdev-\u003emii.dev = dev-\u003enet;\ndrivers/net/usb/asix_devices.c:1291:\tdev-\u003emii.mdio_read = asix_mdio_read;\ndrivers/net/usb/asix_devices.c:1292:\tdev-\u003emii.mdio_write = asix_mdio_write;\ndrivers/net/usb/asix_devices.c-1293-\tdev-\u003emii.phy_id_mask = 0x1f;\n--\ndrivers/net/usb/ax88172a.c=18=struct ax88172a_private {\ndrivers/net/usb/ax88172a.c:19:\tstruct mii_bus *mdio;\ndrivers/net/usb/ax88172a.c-20-\tstruct phy_device *phydev;\n--\ndrivers/net/usb/ax88172a.c=55=static void ax88172a_status(struct usbnet *dev, struct urb *urb)\n--\ndrivers/net/usb/ax88172a.c-60-/* use phylib infrastructure */\ndrivers/net/usb/ax88172a.c:61:static int ax88172a_init_mdio(struct usbnet *dev)\ndrivers/net/usb/ax88172a.c-62-{\n--\ndrivers/net/usb/ax88172a.c-65-\ndrivers/net/usb/ax88172a.c:66:\tpriv-\u003emdio = mdiobus_alloc();\ndrivers/net/usb/ax88172a.c:67:\tif (!priv-\u003emdio) {\ndrivers/net/usb/ax88172a.c-68-\t\tnetdev_err(dev-\u003enet, \"Could not allocate MDIO bus\\n\");\n--\ndrivers/net/usb/ax88172a.c-71-\ndrivers/net/usb/ax88172a.c:72:\tpriv-\u003emdio-\u003epriv = (void *)dev;\ndrivers/net/usb/ax88172a.c:73:\tpriv-\u003emdio-\u003eread = \u0026asix_mdio_bus_read;\ndrivers/net/usb/ax88172a.c:74:\tpriv-\u003emdio-\u003ewrite = \u0026asix_mdio_bus_write;\ndrivers/net/usb/ax88172a.c:75:\tpriv-\u003emdio-\u003ename = \"Asix MDIO Bus\";\ndrivers/net/usb/ax88172a.c-76-\t/* mii bus name is usb-\u003cusb bus number\u003e-\u003cusb device number\u003e */\ndrivers/net/usb/ax88172a.c:77:\tsnprintf(priv-\u003emdio-\u003eid, MII_BUS_ID_SIZE, \"usb-%03d:%03d\",\ndrivers/net/usb/ax88172a.c-78-\t\t dev-\u003eudev-\u003ebus-\u003ebusnum, dev-\u003eudev-\u003edevnum);\ndrivers/net/usb/ax88172a.c-79-\ndrivers/net/usb/ax88172a.c:80:\tret = mdiobus_register(priv-\u003emdio);\ndrivers/net/usb/ax88172a.c-81-\tif (ret) {\n--\ndrivers/net/usb/ax88172a.c-85-\ndrivers/net/usb/ax88172a.c:86:\tnetdev_info(dev-\u003enet, \"registered mdio bus %s\\n\", priv-\u003emdio-\u003eid);\ndrivers/net/usb/ax88172a.c-87-\treturn 0;\n--\ndrivers/net/usb/ax88172a.c-89-mfree:\ndrivers/net/usb/ax88172a.c:90:\tmdiobus_free(priv-\u003emdio);\ndrivers/net/usb/ax88172a.c-91-\treturn ret;\n--\ndrivers/net/usb/ax88172a.c-93-\ndrivers/net/usb/ax88172a.c:94:static void ax88172a_remove_mdio(struct usbnet *dev)\ndrivers/net/usb/ax88172a.c-95-{\n--\ndrivers/net/usb/ax88172a.c-97-\ndrivers/net/usb/ax88172a.c:98:\tnetdev_info(dev-\u003enet, \"deregistering mdio bus %s\\n\", priv-\u003emdio-\u003eid);\ndrivers/net/usb/ax88172a.c:99:\tmdiobus_unregister(priv-\u003emdio);\ndrivers/net/usb/ax88172a.c:100:\tmdiobus_free(priv-\u003emdio);\ndrivers/net/usb/ax88172a.c-101-}\n--\ndrivers/net/usb/ax88172a.c=158=static int ax88172a_bind(struct usbnet *dev, struct usb_interface *intf)\n--\ndrivers/net/usb/ax88172a.c-225-\t/* init MDIO bus */\ndrivers/net/usb/ax88172a.c:226:\tret = ax88172a_init_mdio(dev);\ndrivers/net/usb/ax88172a.c-227-\tif (ret)\n--\ndrivers/net/usb/ax88172a.c=253=static void ax88172a_unbind(struct usbnet *dev, struct usb_interface *intf)\n--\ndrivers/net/usb/ax88172a.c-256-\ndrivers/net/usb/ax88172a.c:257:\tax88172a_remove_mdio(dev);\ndrivers/net/usb/ax88172a.c-258-\tkfree(priv);\n--\ndrivers/net/usb/ax88172a.c=261=static int ax88172a_reset(struct usbnet *dev)\n--\ndrivers/net/usb/ax88172a.c-311-\tsnprintf(priv-\u003ephy_name, sizeof(priv-\u003ephy_name), PHY_ID_FMT,\ndrivers/net/usb/ax88172a.c:312:\t\t priv-\u003emdio-\u003eid, priv-\u003ephy_addr);\ndrivers/net/usb/ax88172a.c-313-\n--\ndrivers/net/usb/ax88179_178a.c-13-#include \u003clinux/usb/usbnet.h\u003e\ndrivers/net/usb/ax88179_178a.c:14:#include \u003cuapi/linux/mdio.h\u003e\ndrivers/net/usb/ax88179_178a.c:15:#include \u003clinux/mdio.h\u003e\ndrivers/net/usb/ax88179_178a.c-16-\n--\ndrivers/net/usb/ax88179_178a.c=314=static void ax88179_status(struct usbnet *dev, struct urb *urb)\n--\ndrivers/net/usb/ax88179_178a.c-333-\ndrivers/net/usb/ax88179_178a.c:334:static int ax88179_mdio_read(struct net_device *netdev, int phy_id, int loc)\ndrivers/net/usb/ax88179_178a.c-335-{\n--\ndrivers/net/usb/ax88179_178a.c-342-\ndrivers/net/usb/ax88179_178a.c:343:static void ax88179_mdio_write(struct net_device *netdev, int phy_id, int loc,\ndrivers/net/usb/ax88179_178a.c-344-\t\t\t       int val)\n--\ndrivers/net/usb/ax88179_178a.c=1281=static int ax88179_bind(struct usbnet *dev, struct usb_interface *intf)\n--\ndrivers/net/usb/ax88179_178a.c-1302-\tdev-\u003emii.dev = dev-\u003enet;\ndrivers/net/usb/ax88179_178a.c:1303:\tdev-\u003emii.mdio_read = ax88179_mdio_read;\ndrivers/net/usb/ax88179_178a.c:1304:\tdev-\u003emii.mdio_write = ax88179_mdio_write;\ndrivers/net/usb/ax88179_178a.c-1305-\tdev-\u003emii.phy_id_mask = 0xff;\n--\ndrivers/net/usb/ch9200.c=137=static int control_write(struct usbnet *dev, unsigned char request,\n--\ndrivers/net/usb/ch9200.c-176-\ndrivers/net/usb/ch9200.c:177:static int ch9200_mdio_read(struct net_device *netdev, int phy_id, int loc)\ndrivers/net/usb/ch9200.c-178-{\n--\ndrivers/net/usb/ch9200.c-196-\ndrivers/net/usb/ch9200.c:197:static void ch9200_mdio_write(struct net_device *netdev,\ndrivers/net/usb/ch9200.c-198-\t\t\t      int phy_id, int loc, int val)\n--\ndrivers/net/usb/ch9200.c=338=static int ch9200_bind(struct usbnet *dev, struct usb_interface *intf)\n--\ndrivers/net/usb/ch9200.c-348-\tdev-\u003emii.dev = dev-\u003enet;\ndrivers/net/usb/ch9200.c:349:\tdev-\u003emii.mdio_read = ch9200_mdio_read;\ndrivers/net/usb/ch9200.c:350:\tdev-\u003emii.mdio_write = ch9200_mdio_write;\ndrivers/net/usb/ch9200.c-351-\tdev-\u003emii.reg_num_mask = 0x1f;\n--\ndrivers/net/usb/dm9601.c=201=static int dm9601_get_eeprom(struct net_device *net,\n--\ndrivers/net/usb/dm9601.c-219-\ndrivers/net/usb/dm9601.c:220:static int dm9601_mdio_read(struct net_device *netdev, int phy_id, int loc)\ndrivers/net/usb/dm9601.c-221-{\n--\ndrivers/net/usb/dm9601.c-238-\tnetdev_dbg(dev-\u003enet,\ndrivers/net/usb/dm9601.c:239:\t\t   \"dm9601_mdio_read() phy_id=0x%02x, loc=0x%02x, returns=0x%04x\\n\",\ndrivers/net/usb/dm9601.c-240-\t\t   phy_id, loc, le16_to_cpu(res));\n--\ndrivers/net/usb/dm9601.c-244-\ndrivers/net/usb/dm9601.c:245:static void dm9601_mdio_write(struct net_device *netdev, int phy_id, int loc,\ndrivers/net/usb/dm9601.c-246-\t\t\t      int val)\n--\ndrivers/net/usb/dm9601.c-255-\ndrivers/net/usb/dm9601.c:256:\tnetdev_dbg(dev-\u003enet, \"dm9601_mdio_write() phy_id=0x%02x, loc=0x%02x, val=0x%04x\\n\",\ndrivers/net/usb/dm9601.c-257-\t\t   phy_id, loc, val);\n--\ndrivers/net/usb/dm9601.c=338=static int dm9601_bind(struct usbnet *dev, struct usb_interface *intf)\n--\ndrivers/net/usb/dm9601.c-358-\tdev-\u003emii.dev = dev-\u003enet;\ndrivers/net/usb/dm9601.c:359:\tdev-\u003emii.mdio_read = dm9601_mdio_read;\ndrivers/net/usb/dm9601.c:360:\tdev-\u003emii.mdio_write = dm9601_mdio_write;\ndrivers/net/usb/dm9601.c-361-\tdev-\u003emii.phy_id_mask = 0x1f;\n--\ndrivers/net/usb/dm9601.c-411-\ndrivers/net/usb/dm9601.c:412:\tdm9601_mdio_write(dev-\u003enet, dev-\u003emii.phy_id, MII_BMCR, BMCR_RESET);\ndrivers/net/usb/dm9601.c:413:\tdm9601_mdio_write(dev-\u003enet, dev-\u003emii.phy_id, MII_ADVERTISE,\ndrivers/net/usb/dm9601.c-414-\t\t\t  ADVERTISE_ALL | ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP);\n--\ndrivers/net/usb/lan78xx.c-19-#include \u003clinux/ipv6.h\u003e\ndrivers/net/usb/lan78xx.c:20:#include \u003clinux/mdio.h\u003e\ndrivers/net/usb/lan78xx.c-21-#include \u003clinux/phy.h\u003e\n--\ndrivers/net/usb/lan78xx.c-29-#include \u003clinux/microchipphy.h\u003e\ndrivers/net/usb/lan78xx.c:30:#include \u003clinux/of_mdio.h\u003e\ndrivers/net/usb/lan78xx.c-31-#include \u003clinux/of_net.h\u003e\n--\ndrivers/net/usb/lan78xx.c=413=struct lan78xx_net {\n--\ndrivers/net/usb/lan78xx.c-441-\tstruct mutex\t\tdev_mutex; /* serialise open/stop wrt suspend/resume */\ndrivers/net/usb/lan78xx.c:442:\tstruct mutex\t\tmdiobus_mutex; /* for MDIO bus access */\ndrivers/net/usb/lan78xx.c-443-\tunsigned int\t\tpipe_in, pipe_out, pipe_intr;\n--\ndrivers/net/usb/lan78xx.c-458-\tu32\t\t\tchiprev;\ndrivers/net/usb/lan78xx.c:459:\tstruct mii_bus\t\t*mdiobus;\ndrivers/net/usb/lan78xx.c-460-\tphy_interface_t\t\tinterface;\n--\ndrivers/net/usb/lan78xx.c=946=static int lan78xx_flush_rx_fifo(struct lan78xx_net *dev)\n--\ndrivers/net/usb/lan78xx.c-950-\ndrivers/net/usb/lan78xx.c:951:/* Loop until the read is completed with timeout called with mdiobus_mutex held */\ndrivers/net/usb/lan78xx.c:952:static int lan78xx_mdiobus_wait_not_busy(struct lan78xx_net *dev)\ndrivers/net/usb/lan78xx.c-953-{\n--\ndrivers/net/usb/lan78xx.c=1582=static int lan78xx_mac_reset(struct lan78xx_net *dev)\n--\ndrivers/net/usb/lan78xx.c-1587-\ndrivers/net/usb/lan78xx.c:1588:\tmutex_lock(\u0026dev-\u003emdiobus_mutex);\ndrivers/net/usb/lan78xx.c-1589-\n--\ndrivers/net/usb/lan78xx.c-1593-\t */\ndrivers/net/usb/lan78xx.c:1594:\tret = lan78xx_mdiobus_wait_not_busy(dev);\ndrivers/net/usb/lan78xx.c-1595-\tif (ret \u003c 0)\n--\ndrivers/net/usb/lan78xx.c-1622-exit_unlock:\ndrivers/net/usb/lan78xx.c:1623:\tmutex_unlock(\u0026dev-\u003emdiobus_mutex);\ndrivers/net/usb/lan78xx.c-1624-\n--\ndrivers/net/usb/lan78xx.c=1944=static int lan78xx_init_mac_address(struct lan78xx_net *dev)\n--\ndrivers/net/usb/lan78xx.c-2011-/* MDIO read and write wrappers for phylib */\ndrivers/net/usb/lan78xx.c:2012:static int lan78xx_mdiobus_read(struct mii_bus *bus, int phy_id, int idx)\ndrivers/net/usb/lan78xx.c-2013-{\n--\ndrivers/net/usb/lan78xx.c-2021-\ndrivers/net/usb/lan78xx.c:2022:\tmutex_lock(\u0026dev-\u003emdiobus_mutex);\ndrivers/net/usb/lan78xx.c-2023-\ndrivers/net/usb/lan78xx.c-2024-\t/* confirm MII not busy */\ndrivers/net/usb/lan78xx.c:2025:\tret = lan78xx_mdiobus_wait_not_busy(dev);\ndrivers/net/usb/lan78xx.c-2026-\tif (ret \u003c 0)\n--\ndrivers/net/usb/lan78xx.c-2034-\ndrivers/net/usb/lan78xx.c:2035:\tret = lan78xx_mdiobus_wait_not_busy(dev);\ndrivers/net/usb/lan78xx.c-2036-\tif (ret \u003c 0)\n--\ndrivers/net/usb/lan78xx.c-2045-done:\ndrivers/net/usb/lan78xx.c:2046:\tmutex_unlock(\u0026dev-\u003emdiobus_mutex);\ndrivers/net/usb/lan78xx.c-2047-\tusb_autopm_put_interface(dev-\u003eintf);\n--\ndrivers/net/usb/lan78xx.c-2051-\ndrivers/net/usb/lan78xx.c:2052:static int lan78xx_mdiobus_write(struct mii_bus *bus, int phy_id, int idx,\ndrivers/net/usb/lan78xx.c-2053-\t\t\t\t u16 regval)\n--\ndrivers/net/usb/lan78xx.c-2062-\ndrivers/net/usb/lan78xx.c:2063:\tmutex_lock(\u0026dev-\u003emdiobus_mutex);\ndrivers/net/usb/lan78xx.c-2064-\ndrivers/net/usb/lan78xx.c-2065-\t/* confirm MII not busy */\ndrivers/net/usb/lan78xx.c:2066:\tret = lan78xx_mdiobus_wait_not_busy(dev);\ndrivers/net/usb/lan78xx.c-2067-\tif (ret \u003c 0)\n--\ndrivers/net/usb/lan78xx.c-2080-\ndrivers/net/usb/lan78xx.c:2081:\tret = lan78xx_mdiobus_wait_not_busy(dev);\ndrivers/net/usb/lan78xx.c-2082-\tif (ret \u003c 0)\n--\ndrivers/net/usb/lan78xx.c-2085-done:\ndrivers/net/usb/lan78xx.c:2086:\tmutex_unlock(\u0026dev-\u003emdiobus_mutex);\ndrivers/net/usb/lan78xx.c-2087-\tusb_autopm_put_interface(dev-\u003eintf);\n--\ndrivers/net/usb/lan78xx.c-2090-\ndrivers/net/usb/lan78xx.c:2091:static int lan78xx_mdio_init(struct lan78xx_net *dev)\ndrivers/net/usb/lan78xx.c-2092-{\n--\ndrivers/net/usb/lan78xx.c-2095-\ndrivers/net/usb/lan78xx.c:2096:\tdev-\u003emdiobus = mdiobus_alloc();\ndrivers/net/usb/lan78xx.c:2097:\tif (!dev-\u003emdiobus) {\ndrivers/net/usb/lan78xx.c-2098-\t\tnetdev_err(dev-\u003enet, \"can't allocate MDIO bus\\n\");\n--\ndrivers/net/usb/lan78xx.c-2101-\ndrivers/net/usb/lan78xx.c:2102:\tdev-\u003emdiobus-\u003epriv = (void *)dev;\ndrivers/net/usb/lan78xx.c:2103:\tdev-\u003emdiobus-\u003eread = lan78xx_mdiobus_read;\ndrivers/net/usb/lan78xx.c:2104:\tdev-\u003emdiobus-\u003ewrite = lan78xx_mdiobus_write;\ndrivers/net/usb/lan78xx.c:2105:\tdev-\u003emdiobus-\u003ename = \"lan78xx-mdiobus\";\ndrivers/net/usb/lan78xx.c:2106:\tdev-\u003emdiobus-\u003eparent = \u0026dev-\u003eudev-\u003edev;\ndrivers/net/usb/lan78xx.c-2107-\ndrivers/net/usb/lan78xx.c:2108:\tsnprintf(dev-\u003emdiobus-\u003eid, MII_BUS_ID_SIZE, \"usb-%03d:%03d\",\ndrivers/net/usb/lan78xx.c-2109-\t\t dev-\u003eudev-\u003ebus-\u003ebusnum, dev-\u003eudev-\u003edevnum);\n--\ndrivers/net/usb/lan78xx.c-2114-\t\t/* set to internal PHY id */\ndrivers/net/usb/lan78xx.c:2115:\t\tdev-\u003emdiobus-\u003ephy_mask = ~(1 \u003c\u003c 1);\ndrivers/net/usb/lan78xx.c-2116-\t\tbreak;\n--\ndrivers/net/usb/lan78xx.c-2120-\ndrivers/net/usb/lan78xx.c:2121:\tnode = of_get_child_by_name(dev-\u003eudev-\u003edev.of_node, \"mdio\");\n\n"
}

gemini-3.8-flash

null

null

							input: 43187
							output: 32
							thoughts: 192
						

**Diving into the Network Driver Code**

Okay, so I'm looking at `ax88172a.c` and `asix_devices.c` – seems like the right place to understand the initialization process. Let's see... ah, right here in `ax88172a_init_mdio`, I see `mdiobus_alloc`. That's standard practice. Then, the important part: `priv->mdio->priv = (void *)dev;` – setting up the private data pointer, as usual. We have `read` and `write` functions hooked up to `asix_mdio_bus_read` and `asix_mdio_bus_write`, good. Finally, `mdiobus_register(priv->mdio)`... Hmm, *registering* the MDIO bus. Now, what does *that* actually do under the hood? I need to look up the implementation of `mdiobus_register`. Let's check `drivers/net/phy/mdio_bus.c`.

{
  "Expression": "int __mdiobus_register",
  "PathPrefix": "drivers/net/phy"
}

{
  "Output": "drivers/net/phy/mdio_bus_provider.c=525=static bool mdiobus_prevent_c45_scan(struct mii_bus *bus)\n--\ndrivers/net/phy/mdio_bus_provider.c-552- */\ndrivers/net/phy/mdio_bus_provider.c:553:int __mdiobus_register(struct mii_bus *bus, struct module *owner)\ndrivers/net/phy/mdio_bus_provider.c-554-{\n"
}

gemini-3.8-flash

null

null

							input: 43780
							output: 42
							thoughts: 29
						

Okay, here's my summary, taking on the persona you requested:

**Diving into the MDIO Bus Registration**

Alright, let's get down to brass tacks. I'm going to take a closer look at the `mdiobus_register` function. I need to understand exactly how the MDIO bus is being brought online, specifically within the `drivers/net/phy/mdio_bus_provider.c` file. This is where the magic starts, right? I want to see how the system is setting up the connection between the PHY and the MDIO bus interface. I need to refresh my understanding of the registration process and pinpoint where the important initializations are taking place. This is crucial for debugging and optimization. Let's see how the bus is being configured, who's registering it, and what data structures are involved. Time to dig in!

{
  "File": "drivers/net/phy/mdio_bus_provider.c",
  "FirstLine": 550,
  "LineCount": 60
}

{
  "Contents": " 550:\t *\n 551:\t * Returns 0 on success or \u003c 0 on error.\n 552:\t */\n 553:\tint __mdiobus_register(struct mii_bus *bus, struct module *owner)\n 554:\t{\n 555:\t\tstruct mdio_device *mdiodev;\n 556:\t\tstruct gpio_desc *gpiod;\n 557:\t\tbool prevent_c45_scan;\n 558:\t\tint i, err;\n 559:\t\n 560:\t\tif (!bus || !bus-\u003ename)\n 561:\t\t\treturn -EINVAL;\n 562:\t\n 563:\t\t/* An access method always needs both read and write operations */\n 564:\t\tif (!!bus-\u003eread != !!bus-\u003ewrite || !!bus-\u003eread_c45 != !!bus-\u003ewrite_c45)\n 565:\t\t\treturn -EINVAL;\n 566:\t\n 567:\t\t/* At least one method is mandatory */\n 568:\t\tif (!bus-\u003eread \u0026\u0026 !bus-\u003eread_c45)\n 569:\t\t\treturn -EINVAL;\n 570:\t\n 571:\t\tif (bus-\u003eparent \u0026\u0026 bus-\u003eparent-\u003eof_node)\n 572:\t\t\tfwnode_set_flag(\u0026bus-\u003eparent-\u003eof_node-\u003efwnode,\n 573:\t\t\t\t\tFWNODE_FLAG_NEEDS_CHILD_BOUND_ON_ADD);\n 574:\t\n 575:\t\tWARN(bus-\u003estate != MDIOBUS_ALLOCATED \u0026\u0026\n 576:\t\t     bus-\u003estate != MDIOBUS_UNREGISTERED,\n 577:\t\t     \"%s: not in ALLOCATED or UNREGISTERED state\\n\", bus-\u003eid);\n 578:\t\n 579:\t\tbus-\u003eowner = owner;\n 580:\t\tbus-\u003edev.parent = bus-\u003eparent;\n 581:\t\tbus-\u003edev.class = \u0026mdio_bus_class;\n 582:\t\tbus-\u003edev.groups = NULL;\n 583:\t\tdev_set_name(\u0026bus-\u003edev, \"%s\", bus-\u003eid);\n 584:\t\n 585:\t\t/* If the bus state is allocated, we're registering a fresh bus\n 586:\t\t * that may have a fwnode associated with it. Grab a reference\n 587:\t\t * to the fwnode. This will be dropped when the bus is released.\n 588:\t\t * If the bus was set to unregistered, it means that the bus was\n 589:\t\t * previously registered, and we've already grabbed a reference.\n 590:\t\t */\n 591:\t\tif (bus-\u003estate == MDIOBUS_ALLOCATED)\n 592:\t\t\tfwnode_handle_get(dev_fwnode(\u0026bus-\u003edev));\n 593:\t\n 594:\t\t/* We need to set state to MDIOBUS_UNREGISTERED to correctly release\n 595:\t\t * the device in mdiobus_free()\n 596:\t\t *\n 597:\t\t * State will be updated later in this function in case of success\n 598:\t\t */\n 599:\t\tbus-\u003estate = MDIOBUS_UNREGISTERED;\n 600:\t\n 601:\t\terr = device_register(\u0026bus-\u003edev);\n 602:\t\tif (err) {\n 603:\t\t\tpr_err(\"mii_bus %s failed to register\\n\", bus-\u003eid);\n 604:\t\t\treturn -EINVAL;\n 605:\t\t}\n 606:\t\n 607:\t\tmutex_init(\u0026bus-\u003emdio_lock);\n 608:\t\tmutex_init(\u0026bus-\u003eshared_lock);\n 609:\t\n"
}

gemini-3.8-flash

null

null

							input: 45002
							output: 42
							thoughts: 15
						

Okay, here's my interpretation of that thought process, assuming I'm well-versed in kernel driver development and the intricacies of MDIO bus management:

**Diving Deeper into `__mdiobus_register`**

Alright, so the task at hand is to understand the complete picture of what's happening within `__mdiobus_register`. Just looking at the function signature and a cursory glance isn't enough, I need to see the *entire* function definition to grasp the flow, the conditional checks, memory allocations, device registrations, and all the intricacies involved in getting an MDIO bus operational. I need to understand how it interacts with the broader kernel subsystems. What are the key elements? What are the edge cases it handles? What are the potential pitfalls? Knowing the internal workings of this function is going to give me a solid foundation for understanding the behavior of this part of the driver.

{
  "File": "drivers/net/phy/mdio_bus_provider.c",
  "FirstLine": 610,
  "LineCount": 50
}

{
  "Contents": " 610:\t\t/* assert bus level PHY GPIO reset */\n 611:\t\tgpiod = devm_gpiod_get_optional(\u0026bus-\u003edev, \"reset\", GPIOD_OUT_HIGH);\n 612:\t\tif (IS_ERR(gpiod)) {\n 613:\t\t\terr = dev_err_probe(\u0026bus-\u003edev, PTR_ERR(gpiod),\n 614:\t\t\t\t\t    \"mii_bus %s couldn't get reset GPIO\\n\",\n 615:\t\t\t\t\t    bus-\u003eid);\n 616:\t\t\tdevice_del(\u0026bus-\u003edev);\n 617:\t\t\treturn err;\n 618:\t\t} else\tif (gpiod) {\n 619:\t\t\tbus-\u003ereset_gpiod = gpiod;\n 620:\t\t\tfsleep(bus-\u003ereset_delay_us);\n 621:\t\t\tgpiod_set_value_cansleep(gpiod, 0);\n 622:\t\t\tif (bus-\u003ereset_post_delay_us \u003e 0)\n 623:\t\t\t\tfsleep(bus-\u003ereset_post_delay_us);\n 624:\t\t}\n 625:\t\n 626:\t\tif (bus-\u003ereset) {\n 627:\t\t\terr = bus-\u003ereset(bus);\n 628:\t\t\tif (err)\n 629:\t\t\t\tgoto error_reset_gpiod;\n 630:\t\t}\n 631:\t\n 632:\t\tif (bus-\u003eread) {\n 633:\t\t\terr = mdiobus_scan_bus_c22(bus);\n 634:\t\t\tif (err)\n 635:\t\t\t\tgoto error;\n 636:\t\t}\n 637:\t\n 638:\t\tprevent_c45_scan = mdiobus_prevent_c45_scan(bus);\n 639:\t\n 640:\t\tif (!prevent_c45_scan \u0026\u0026 bus-\u003eread_c45) {\n 641:\t\t\terr = mdiobus_scan_bus_c45(bus);\n 642:\t\t\tif (err)\n 643:\t\t\t\tgoto error;\n 644:\t\t}\n 645:\t\n 646:\t\tbus-\u003estate = MDIOBUS_REGISTERED;\n 647:\t\tdev_dbg(\u0026bus-\u003edev, \"probed\\n\");\n 648:\t\treturn 0;\n 649:\t\n 650:\terror:\n 651:\t\tfor (i = 0; i \u003c PHY_MAX_ADDR; i++) {\n 652:\t\t\tmdiodev = bus-\u003emdio_map[i];\n 653:\t\t\tif (!mdiodev)\n 654:\t\t\t\tcontinue;\n 655:\t\n 656:\t\t\tmdiodev-\u003edevice_remove(mdiodev);\n 657:\t\t\tmdiodev-\u003edevice_free(mdiodev);\n 658:\t\t}\n 659:\terror_reset_gpiod:\n"
}

gemini-3.8-flash

null

null

							input: 46019
							output: 37
							thoughts: 301
						

**My Analysis of the MDIO Bus Scanning Process**

Okay, let's break this down. I'm looking at `mdiobus_scan_bus_c22(bus)`, right? My understanding is that this function is the core of scanning the MDIO bus for devices. So, when a USB device like `asix` or `ax88172a` is connected (especially when using a tool like syzkaller for USB raw gadget or emulation), it's primed to respond to MDIO read/write control transfers.

Hang on... This is interesting. Does syzkaller offer the functionality of a USB raw gadget? Or, can it fully emulate a USB device? Yes! I recall now that syzkaller has `syz_usb_connect`, allowing for the generation of arbitrary USB descriptors and responses.

This has significance because when syzkaller emulates the `ax88172a` USB device, the `ax88172a_bind` function is invoked. This in turn calls `ax88172a_init_mdio` which then executes `mdiobus_register`. This registration is the trigger that gets the MDIO bus scanned using `bus->read` (i.e. `asix_mdio_bus_read`).

The key here is that if the emulated USB device *responds* with a specific PHY ID – `MARVELL_PHY_ID_88E1318S` (0x0141, 0x0e90) – at the MII_PHYSID1 and MII_PHYSID2 registers, phylib will properly match it to `marvell_drivers`!

Hold on, I need to verify that last point. Let me go back and double check the implementation of `mdiobus_scan_bus_c22` to confirm the behavior I expect.

{
  "Expression": "int mdiobus_scan_bus_c22",
  "PathPrefix": "drivers/net/phy"
}

{
  "Output": "drivers/net/phy/mdio_bus_provider.c=477=static struct phy_device *mdiobus_scan_c45(struct mii_bus *bus, int addr)\n--\ndrivers/net/phy/mdio_bus_provider.c-481-\ndrivers/net/phy/mdio_bus_provider.c:482:static int mdiobus_scan_bus_c22(struct mii_bus *bus)\ndrivers/net/phy/mdio_bus_provider.c-483-{\n"
}

gemini-3.8-flash

null

null

							input: 46908
							output: 42
							thoughts: 30
						

Here's a summary of my mental process, as if I were the one thinking it:

**Diving into the MDIO Bus Provider Code**

Alright, time to dig into `drivers/net/phy/mdio_bus_provider.c`, specifically lines 480 through 520. I'm aiming to understand the implementation details of this section. I know this code, so I'm expecting this to be relatively straightforward. I'll be looking for any hints about the bus provider's responsibilities, any interesting error handling, and the specifics of its interaction with the underlying MDIO hardware. Let's see what we've got.

{
  "File": "drivers/net/phy/mdio_bus_provider.c",
  "FirstLine": 480,
  "LineCount": 45
}

{
  "Contents": " 480:\t}\n 481:\t\n 482:\tstatic int mdiobus_scan_bus_c22(struct mii_bus *bus)\n 483:\t{\n 484:\t\tint i;\n 485:\t\n 486:\t\tfor (i = 0; i \u003c PHY_MAX_ADDR; i++) {\n 487:\t\t\tif ((bus-\u003ephy_mask \u0026 BIT(i)) == 0) {\n 488:\t\t\t\tstruct phy_device *phydev;\n 489:\t\n 490:\t\t\t\tphydev = mdiobus_scan_c22(bus, i);\n 491:\t\t\t\tif (IS_ERR(phydev) \u0026\u0026 (PTR_ERR(phydev) != -ENODEV))\n 492:\t\t\t\t\treturn PTR_ERR(phydev);\n 493:\t\t\t}\n 494:\t\t}\n 495:\t\treturn 0;\n 496:\t}\n 497:\t\n 498:\tstatic int mdiobus_scan_bus_c45(struct mii_bus *bus)\n 499:\t{\n 500:\t\tint i;\n 501:\t\n 502:\t\tfor (i = 0; i \u003c PHY_MAX_ADDR; i++) {\n 503:\t\t\tif ((bus-\u003ephy_mask \u0026 BIT(i)) == 0) {\n 504:\t\t\t\tstruct phy_device *phydev;\n 505:\t\n 506:\t\t\t\t/* Don't scan C45 if we already have a C22 device */\n 507:\t\t\t\tif (bus-\u003emdio_map[i])\n 508:\t\t\t\t\tcontinue;\n 509:\t\n 510:\t\t\t\tphydev = mdiobus_scan_c45(bus, i);\n 511:\t\t\t\tif (IS_ERR(phydev) \u0026\u0026 (PTR_ERR(phydev) != -ENODEV))\n 512:\t\t\t\t\treturn PTR_ERR(phydev);\n 513:\t\t\t}\n 514:\t\t}\n 515:\t\treturn 0;\n 516:\t}\n 517:\t\n 518:\t/* There are some C22 PHYs which do bad things when where is a C45\n 519:\t * transaction on the bus, like accepting a read themselves, and\n 520:\t * stomping over the true devices reply, to performing a write to\n 521:\t * themselves which was intended for another device. Now that C22\n 522:\t * devices have been found, see if any of them are bad for C45, and if we\n 523:\t * should skip the C45 scan.\n 524:\t */\n"
}

gemini-3.8-flash

null

null

							input: 47823
							output: 39
							thoughts: 36
						

Here's my analysis of the provided snippet, framed as my own thought process:

**Diving into the MDIO Bus Scan**

Okay, so we're looking at `mdiobus_scan_c22(bus, i)`. That function name clearly suggests we're dealing with an MDIO bus, likely scanning for devices using Clause 22 addressing. I'm immediately curious about the implementation details of this function. I'd want to understand how it's traversing the bus, the mechanisms it's using to identify connected devices, and the data structures it relies on to manage the scan results. Is it a brute-force approach, or something more sophisticated? Are there any potential timing issues or power management considerations baked into this function? I'll probably start by looking at the control register interactions and how it's handling potential errors during communication.

{
  "Expression": "struct phy_device \\*mdiobus_scan_c22",
  "PathPrefix": "drivers/net/phy"
}

{
  "Output": "drivers/net/phy/mdio_bus_provider.c=408=static struct phy_device *mdiobus_scan(struct mii_bus *bus, int addr, bool c45)\n--\ndrivers/net/phy/mdio_bus_provider.c-458- */\ndrivers/net/phy/mdio_bus_provider.c:459:struct phy_device *mdiobus_scan_c22(struct mii_bus *bus, int addr)\ndrivers/net/phy/mdio_bus_provider.c-460-{\n"
}

gemini-3.8-flash

null

null

							input: 48229
							output: 42
							thoughts: 30
						

Here's my analysis of the provided code snippet, reflecting my expert understanding:

**Deep Dive into MDIO Bus Provider - Line-by-Line Breakdown**

Okay, let's get into the nitty-gritty. I'm focusing on `drivers/net/phy/mdio_bus_provider.c`, specifically lines 410 to 475. This is where the core logic for the MDIO bus provider gets its hands dirty, likely dealing with register access or device discovery. Based on the file path and function name, I'm expecting this section to handle either the low-level MDIO transactions, such as read/write operations on a PHY register, or perhaps the probing or enumeration of PHY devices connected to the bus. I would hypothesize the latter as more likely, as the former is typically abstracted from the user-level device drivers.

I'll be looking for key indicators: register addresses (MDIO or internal), data manipulation (bit masks, shifts), error handling (return values, flags), any locking primitives (mutexes, spinlocks) to ensure thread safety, and how interrupts might be handled if this section touches upon that. The code's structure here will give me insight into the provider's architecture and assumptions. Is it synchronous or asynchronous? Is it interrupt-driven or polling based? What error conditions are accounted for? This is where good code can be distinguished from okay code. I'm keeping a mental checklist of best practices; register access through defined macros, error codes through defined enums, and a proper separation of concerns. Finally, I'll be assessing the elegance of the implementation. Does it clearly define the control loop? Does it handle error cases robustly?

{
  "File": "drivers/net/phy/mdio_bus_provider.c",
  "FirstLine": 410,
  "LineCount": 60
}

{
  "Contents": " 410:\t\tstruct phy_device *phydev = ERR_PTR(-ENODEV);\n 411:\t\tstruct fwnode_handle *fwnode;\n 412:\t\tchar node_name[16];\n 413:\t\tint err;\n 414:\t\n 415:\t\tphydev = get_phy_device(bus, addr, c45);\n 416:\t\tif (IS_ERR(phydev))\n 417:\t\t\treturn phydev;\n 418:\t\n 419:\t#if IS_ENABLED(CONFIG_OF_MDIO)\n 420:\t\t/* For DT, see if the auto-probed phy has a corresponding child\n 421:\t\t * in the bus node, and set the of_node pointer in this case.\n 422:\t\t */\n 423:\t\tof_mdiobus_link_mdiodev(bus, \u0026phydev-\u003emdio);\n 424:\t#endif\n 425:\t\n 426:\t\t/* Search for a swnode for the phy in the swnode hierarchy of the bus.\n 427:\t\t * If there is no swnode for the phy provided, just ignore it.\n 428:\t\t */\n 429:\t\tif (dev_fwnode(\u0026bus-\u003edev) \u0026\u0026 !dev_fwnode(\u0026phydev-\u003emdio.dev)) {\n 430:\t\t\tsnprintf(node_name, sizeof(node_name), \"ethernet-phy@%d\",\n 431:\t\t\t\t addr);\n 432:\t\t\tfwnode = fwnode_get_named_child_node(dev_fwnode(\u0026bus-\u003edev),\n 433:\t\t\t\t\t\t\t     node_name);\n 434:\t\t\tif (fwnode)\n 435:\t\t\t\tdevice_set_node(\u0026phydev-\u003emdio.dev, fwnode);\n 436:\t\t}\n 437:\t\n 438:\t\terr = phy_device_register(phydev);\n 439:\t\tif (err) {\n 440:\t\t\tphy_device_free(phydev);\n 441:\t\t\treturn ERR_PTR(-ENODEV);\n 442:\t\t}\n 443:\t\n 444:\t\treturn phydev;\n 445:\t}\n 446:\t\n 447:\t/**\n 448:\t * mdiobus_scan_c22 - scan one address on a bus for C22 MDIO devices.\n 449:\t * @bus: mii_bus to scan\n 450:\t * @addr: address on bus to scan\n 451:\t *\n 452:\t * This function scans one address on the MDIO bus, looking for\n 453:\t * devices which can be identified using a vendor/product ID in\n 454:\t * registers 2 and 3. Not all MDIO devices have such registers, but\n 455:\t * PHY devices typically do. Hence this function assumes anything\n 456:\t * found is a PHY, or can be treated as a PHY. Other MDIO devices,\n 457:\t * such as switches, will probably not be found during the scan.\n 458:\t */\n 459:\tstruct phy_device *mdiobus_scan_c22(struct mii_bus *bus, int addr)\n 460:\t{\n 461:\t\treturn mdiobus_scan(bus, addr, false);\n 462:\t}\n 463:\tEXPORT_SYMBOL(mdiobus_scan_c22);\n 464:\t\n 465:\t/**\n 466:\t * mdiobus_scan_c45 - scan one address on a bus for C45 MDIO devices.\n 467:\t * @bus: mii_bus to scan\n 468:\t * @addr: address on bus to scan\n 469:\t *\n"
}

gemini-3.8-flash

null

null

							input: 49653
							output: 28
							thoughts: 125
						

**My Line of Inquiry**

Okay, so I'm digging into how Wake-on-LAN (WoL) gets configured for this PHY device. The core seems to hinge on understanding how the PHY device itself is initialized and how it then interacts with the system. From the code, it looks like `get_phy_device` is the function that's responsible for retrieving the PHY ID from registers 2 and 3. That's a crucial starting point. This ID is then likely used by the `phy_device_register(phydev)` function which does the actual registration of this PHY device on the MDIO bus. That registration process is important because it is when the drivers are probed, and the `mdio_device_id` or `phy_driver` match is what ties it all together.

So, *once* the PHY is registered and the driver is bound, then `ethtool` should be able to trigger the appropriate WoL setting using `phy_ethtool_set_wol`. That's the entry point I'm interested in. To figure out the specific implementation, I'm going to track how `m88e1318_set_wol` is actually called. I'm going to use grep to search for all instances of `set_wol` in the `drivers/net/phy` directory to discover the control flow.

{
  "Expression": "set_wol",
  "PathPrefix": "drivers/net/phy"
}

{
  "Output": "drivers/net/phy/air_an8801.c=680=static void an8801r_get_wol(struct phy_device *phydev,\n--\ndrivers/net/phy/air_an8801.c-707-\ndrivers/net/phy/air_an8801.c:708:static int an8801r_set_wol(struct phy_device *phydev,\ndrivers/net/phy/air_an8801.c-709-\t\t\t   struct ethtool_wolinfo *wol)\n--\ndrivers/net/phy/air_an8801.c=1122=static struct phy_driver airoha_driver[] = {\n--\ndrivers/net/phy/air_an8801.c-1133-\t.handle_interrupt\t= an8801r_handle_interrupt,\ndrivers/net/phy/air_an8801.c:1134:\t.set_wol\t\t= an8801r_set_wol,\ndrivers/net/phy/air_an8801.c-1135-\t.get_wol\t\t= an8801r_get_wol,\n--\ndrivers/net/phy/bcm-phy-lib.c=875=EXPORT_SYMBOL_GPL(bcm_phy_cable_test_get_status_rdb);\n--\ndrivers/net/phy/bcm-phy-lib.c-882-\ndrivers/net/phy/bcm-phy-lib.c:883:int bcm_phy_set_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol)\ndrivers/net/phy/bcm-phy-lib.c-884-{\n--\ndrivers/net/phy/bcm-phy-lib.c-1030-}\ndrivers/net/phy/bcm-phy-lib.c:1031:EXPORT_SYMBOL_GPL(bcm_phy_set_wol);\ndrivers/net/phy/bcm-phy-lib.c-1032-\n--\ndrivers/net/phy/bcm-phy-lib.h=113=static inline void bcm_ptp_stop(struct bcm_ptp_private *priv)\n--\ndrivers/net/phy/bcm-phy-lib.h-117-\ndrivers/net/phy/bcm-phy-lib.h:118:int bcm_phy_set_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol);\ndrivers/net/phy/bcm-phy-lib.h-119-void bcm_phy_get_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol);\n--\ndrivers/net/phy/broadcom.c=1134=static void bcm54xx_phy_get_wol(struct phy_device *phydev,\n--\ndrivers/net/phy/broadcom.c-1149-\ndrivers/net/phy/broadcom.c:1150:static int bcm54xx_phy_set_wol(struct phy_device *phydev,\ndrivers/net/phy/broadcom.c-1151-\t\t\t       struct ethtool_wolinfo *wol)\n--\ndrivers/net/phy/broadcom.c-1162-\ndrivers/net/phy/broadcom.c:1163:\tret = bcm_phy_set_wol(phydev, wol);\ndrivers/net/phy/broadcom.c-1164-\tif (ret \u003c 0)\n--\ndrivers/net/phy/broadcom.c=1466=static struct phy_driver broadcom_drivers[] = {\n--\ndrivers/net/phy/broadcom.c-1506-\t.get_wol\t= bcm54xx_phy_get_wol,\ndrivers/net/phy/broadcom.c:1507:\t.set_wol\t= bcm54xx_phy_set_wol,\ndrivers/net/phy/broadcom.c-1508-\t.led_brightness_set\t= bcm_phy_led_brightness_set,\n--\ndrivers/net/phy/dp83822.c=214=static int dp83822_config_wol(struct phy_device *phydev,\n--\ndrivers/net/phy/dp83822.c-275-\ndrivers/net/phy/dp83822.c:276:static int dp83822_set_wol(struct phy_device *phydev,\ndrivers/net/phy/dp83822.c-277-\t\t\t   struct ethtool_wolinfo *wol)\n--\ndrivers/net/phy/dp83822.c=1124=static int dp83822_led_hw_control_get(struct phy_device *phydev, u8 index,\n--\ndrivers/net/phy/dp83822.c-1192-\t\t.get_wol = dp83822_get_wol,\t\t\t\\\ndrivers/net/phy/dp83822.c:1193:\t\t.set_wol = dp83822_set_wol,\t\t\t\\\ndrivers/net/phy/dp83822.c-1194-\t\t.config_intr = dp83822_config_intr,\t\t\\\n--\ndrivers/net/phy/dp83822.c-1212-\t\t.get_wol = dp83822_get_wol,\t\t\t\\\ndrivers/net/phy/dp83822.c:1213:\t\t.set_wol = dp83822_set_wol,\t\t\t\\\ndrivers/net/phy/dp83822.c-1214-\t\t.config_intr = dp83822_config_intr,\t\t\\\n--\ndrivers/net/phy/dp83822.c-1228-\t\t.get_wol = dp83822_get_wol,\t\t\t\\\ndrivers/net/phy/dp83822.c:1229:\t\t.set_wol = dp83822_set_wol,\t\t\t\\\ndrivers/net/phy/dp83822.c-1230-\t\t.config_intr = dp83822_config_intr,\t\t\\\n--\ndrivers/net/phy/dp83867.c=201=static int dp83867_ack_interrupt(struct phy_device *phydev)\n--\ndrivers/net/phy/dp83867.c-210-\ndrivers/net/phy/dp83867.c:211:static int dp83867_set_wol(struct phy_device *phydev,\ndrivers/net/phy/dp83867.c-212-\t\t\t   struct ethtool_wolinfo *wol)\n--\ndrivers/net/phy/dp83867.c=1183=static struct phy_driver dp83867_driver[] = {\n--\ndrivers/net/phy/dp83867.c-1199-\t\t.get_wol\t= dp83867_get_wol,\ndrivers/net/phy/dp83867.c:1200:\t\t.set_wol\t= dp83867_set_wol,\ndrivers/net/phy/dp83867.c-1201-\n--\ndrivers/net/phy/dp83869.c=235=static irqreturn_t dp83869_handle_interrupt(struct phy_device *phydev)\n--\ndrivers/net/phy/dp83869.c-258-\ndrivers/net/phy/dp83869.c:259:static int dp83869_set_wol(struct phy_device *phydev,\ndrivers/net/phy/dp83869.c-260-\t\t\t   struct ethtool_wolinfo *wol)\n--\ndrivers/net/phy/dp83869.c=898=static int dp83869_phy_reset(struct phy_device *phydev)\n--\ndrivers/net/phy/dp83869.c-928-\t.get_wol\t= dp83869_get_wol,\t\t\t\\\ndrivers/net/phy/dp83869.c:929:\t.set_wol\t= dp83869_set_wol,\t\t\t\\\ndrivers/net/phy/dp83869.c-930-\t.suspend\t= genphy_suspend,\t\t\t\\\n--\ndrivers/net/phy/dp83tc811.c=78=static int dp83811_ack_interrupt(struct phy_device *phydev)\n--\ndrivers/net/phy/dp83tc811.c-96-\ndrivers/net/phy/dp83tc811.c:97:static int dp83811_set_wol(struct phy_device *phydev,\ndrivers/net/phy/dp83tc811.c-98-\t\t\t   struct ethtool_wolinfo *wol)\n--\ndrivers/net/phy/dp83tc811.c=387=static struct phy_driver dp83811_driver[] = {\n--\ndrivers/net/phy/dp83tc811.c-397-\t\t.get_wol = dp83811_get_wol,\ndrivers/net/phy/dp83tc811.c:398:\t\t.set_wol = dp83811_set_wol,\ndrivers/net/phy/dp83tc811.c-399-\t\t.config_intr = dp83811_config_intr,\n--\ndrivers/net/phy/marvell.c=1949=static void m88e1318_get_wol(struct phy_device *phydev,\n--\ndrivers/net/phy/marvell.c-1968-\ndrivers/net/phy/marvell.c:1969:static int m88e1318_set_wol(struct phy_device *phydev,\ndrivers/net/phy/marvell.c-1970-\t\t\t    struct ethtool_wolinfo *wol)\n--\ndrivers/net/phy/marvell.c=3696=static struct phy_driver marvell_drivers[] = {\n--\ndrivers/net/phy/marvell.c-3851-\t\t.get_wol = m88e1318_get_wol,\ndrivers/net/phy/marvell.c:3852:\t\t.set_wol = m88e1318_set_wol,\ndrivers/net/phy/marvell.c-3853-\t\t.resume = genphy_resume,\n--\ndrivers/net/phy/marvell.c-3959-\t\t.get_wol = m88e1318_get_wol,\ndrivers/net/phy/marvell.c:3960:\t\t.set_wol = m88e1318_set_wol,\ndrivers/net/phy/marvell.c-3961-\t\t.resume = m88e1510_resume,\n--\ndrivers/net/phy/marvell10g.c=1314=static void mv3110_get_wol(struct phy_device *phydev,\n--\ndrivers/net/phy/marvell10g.c-1329-\ndrivers/net/phy/marvell10g.c:1330:static int mv3110_set_wol(struct phy_device *phydev,\ndrivers/net/phy/marvell10g.c-1331-\t\t\t  struct ethtool_wolinfo *wol)\n--\ndrivers/net/phy/marvell10g.c=1388=static struct phy_driver mv3310_drivers[] = {\n--\ndrivers/net/phy/marvell10g.c-1407-\t\t.get_wol\t= mv3110_get_wol,\ndrivers/net/phy/marvell10g.c:1408:\t\t.set_wol\t= mv3110_set_wol,\ndrivers/net/phy/marvell10g.c-1409-\t\t.attach_mii_port = mv3310_attach_mii_port,\n--\ndrivers/net/phy/marvell10g.c-1450-\t\t.get_wol\t= mv3110_get_wol,\ndrivers/net/phy/marvell10g.c:1451:\t\t.set_wol\t= mv3110_set_wol,\ndrivers/net/phy/marvell10g.c-1452-\t\t.attach_mii_port = mv3310_attach_mii_port,\n--\ndrivers/net/phy/microchip.c=309=static void lan88xx_remove(struct phy_device *phydev)\n--\ndrivers/net/phy/microchip.c-317-\ndrivers/net/phy/microchip.c:318:static int lan88xx_set_wol(struct phy_device *phydev,\ndrivers/net/phy/microchip.c-319-\t\t\t   struct ethtool_wolinfo *wol)\n--\ndrivers/net/phy/microchip.c=546=static struct phy_driver microchip_phy_driver[] = {\n--\ndrivers/net/phy/microchip.c-573-\t.resume\t\t= genphy_resume,\ndrivers/net/phy/microchip.c:574:\t.set_wol\t= lan88xx_set_wol,\ndrivers/net/phy/microchip.c-575-\t.read_page\t= lan88xx_read_page,\n--\ndrivers/net/phy/motorcomm.c=537=static void ytphy_get_wol(struct phy_device *phydev,\n--\ndrivers/net/phy/motorcomm.c-553-/**\ndrivers/net/phy/motorcomm.c:554: * ytphy_set_wol() - turn wake-on-lan on or off\ndrivers/net/phy/motorcomm.c-555- * @phydev: a pointer to a \u0026struct phy_device\n--\ndrivers/net/phy/motorcomm.c-563- */\ndrivers/net/phy/motorcomm.c:564:static int ytphy_set_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol)\ndrivers/net/phy/motorcomm.c-565-{\n--\ndrivers/net/phy/motorcomm.c-635-\ndrivers/net/phy/motorcomm.c:636:static int yt8531_set_wol(struct phy_device *phydev,\ndrivers/net/phy/motorcomm.c-637-\t\t\t  struct ethtool_wolinfo *wol)\n--\ndrivers/net/phy/motorcomm.c=3107=static struct phy_driver motorcomm_phy_drvs[] = {\n--\ndrivers/net/phy/motorcomm.c-3124-\t\t.get_wol\t= ytphy_get_wol,\ndrivers/net/phy/motorcomm.c:3125:\t\t.set_wol\t= ytphy_set_wol,\ndrivers/net/phy/motorcomm.c-3126-\t\t.config_aneg\t= yt8521_config_aneg,\n--\ndrivers/net/phy/motorcomm.c-3152-\t\t.get_wol\t= ytphy_get_wol,\ndrivers/net/phy/motorcomm.c:3153:\t\t.set_wol\t= yt8531_set_wol,\ndrivers/net/phy/motorcomm.c-3154-\t\t.link_change_notify = yt8531_link_change_notify,\n--\ndrivers/net/phy/motorcomm.c-3166-\t\t.get_wol\t= ytphy_get_wol,\ndrivers/net/phy/motorcomm.c:3167:\t\t.set_wol\t= ytphy_set_wol,\ndrivers/net/phy/motorcomm.c-3168-\t\t.config_aneg\t= yt8521_config_aneg,\n--\ndrivers/net/phy/motorcomm.c-3182-\t\t.get_wol\t\t= ytphy_get_wol,\ndrivers/net/phy/motorcomm.c:3183:\t\t.set_wol\t\t= ytphy_set_wol,\ndrivers/net/phy/motorcomm.c-3184-\t\t.config_aneg\t\t= genphy_config_aneg,\n--\ndrivers/net/phy/mscc/mscc_main.c=2548=static struct phy_driver vsc85xx_driver[] = {\n--\ndrivers/net/phy/mscc/mscc_main.c-2562-\t.probe\t\t= \u0026vsc85xx_probe,\ndrivers/net/phy/mscc/mscc_main.c:2563:\t.set_wol\t= \u0026vsc85xx_wol_set,\ndrivers/net/phy/mscc/mscc_main.c-2564-\t.get_wol\t= \u0026vsc85xx_wol_get,\n--\ndrivers/net/phy/mscc/mscc_main.c-2590-\t.probe\t\t= \u0026vsc85xx_probe,\ndrivers/net/phy/mscc/mscc_main.c:2591:\t.set_wol\t= \u0026vsc85xx_wol_set,\ndrivers/net/phy/mscc/mscc_main.c-2592-\t.get_wol\t= \u0026vsc85xx_wol_get,\n--\ndrivers/net/phy/mscc/mscc_main.c-2619-\t.probe\t\t= \u0026vsc8574_probe,\ndrivers/net/phy/mscc/mscc_main.c:2620:\t.set_wol\t= \u0026vsc85xx_wol_set,\ndrivers/net/phy/mscc/mscc_main.c-2621-\t.get_wol\t= \u0026vsc85xx_wol_get,\n--\ndrivers/net/phy/mscc/mscc_main.c-2648-\t.probe\t\t= \u0026vsc8514_probe,\ndrivers/net/phy/mscc/mscc_main.c:2649:\t.set_wol\t= \u0026vsc85xx_wol_set,\ndrivers/net/phy/mscc/mscc_main.c-2650-\t.get_wol\t= \u0026vsc85xx_wol_get,\n--\ndrivers/net/phy/mscc/mscc_main.c-2678-\t.probe\t\t= \u0026vsc85xx_probe,\ndrivers/net/phy/mscc/mscc_main.c:2679:\t.set_wol\t= \u0026vsc85xx_wol_set,\ndrivers/net/phy/mscc/mscc_main.c-2680-\t.get_wol\t= \u0026vsc85xx_wol_get,\n--\ndrivers/net/phy/mscc/mscc_main.c-2706-\t.probe\t\t= \u0026vsc85xx_probe,\ndrivers/net/phy/mscc/mscc_main.c:2707:\t.set_wol\t= \u0026vsc85xx_wol_set,\ndrivers/net/phy/mscc/mscc_main.c-2708-\t.get_wol\t= \u0026vsc85xx_wol_get,\n--\ndrivers/net/phy/mscc/mscc_main.c-2734-\t.probe\t\t= \u0026vsc85xx_probe,\ndrivers/net/phy/mscc/mscc_main.c:2735:\t.set_wol\t= \u0026vsc85xx_wol_set,\ndrivers/net/phy/mscc/mscc_main.c-2736-\t.get_wol\t= \u0026vsc85xx_wol_get,\n--\ndrivers/net/phy/mscc/mscc_main.c-2762-\t.probe\t\t= \u0026vsc85xx_probe,\ndrivers/net/phy/mscc/mscc_main.c:2763:\t.set_wol\t= \u0026vsc85xx_wol_set,\ndrivers/net/phy/mscc/mscc_main.c-2764-\t.get_wol\t= \u0026vsc85xx_wol_get,\n--\ndrivers/net/phy/mscc/mscc_main.c-2790-\t.probe\t\t= \u0026vsc8574_probe,\ndrivers/net/phy/mscc/mscc_main.c:2791:\t.set_wol\t= \u0026vsc85xx_wol_set,\ndrivers/net/phy/mscc/mscc_main.c-2792-\t.get_wol\t= \u0026vsc85xx_wol_get,\n--\ndrivers/net/phy/mscc/mscc_main.c-2849-\t.probe\t\t= \u0026vsc8584_probe,\ndrivers/net/phy/mscc/mscc_main.c:2850:\t.set_wol\t= \u0026vsc85xx_wol_set,\ndrivers/net/phy/mscc/mscc_main.c-2851-\t.get_wol\t= \u0026vsc85xx_wol_get,\n--\ndrivers/net/phy/mscc/mscc_main.c-2881-\t.probe\t\t= \u0026vsc8584_probe,\ndrivers/net/phy/mscc/mscc_main.c:2882:\t.set_wol\t= \u0026vsc85xx_wol_set,\ndrivers/net/phy/mscc/mscc_main.c-2883-\t.get_wol\t= \u0026vsc85xx_wol_get,\n--\ndrivers/net/phy/mxl-86110.c=338=static void mxl86110_get_wol(struct phy_device *phydev,\n--\ndrivers/net/phy/mxl-86110.c-350-/**\ndrivers/net/phy/mxl-86110.c:351: * mxl86110_set_wol() - enable/disable wake-on-lan\ndrivers/net/phy/mxl-86110.c-352- * @phydev: pointer to the phy_device\n--\ndrivers/net/phy/mxl-86110.c-358- */\ndrivers/net/phy/mxl-86110.c:359:static int mxl86110_set_wol(struct phy_device *phydev,\ndrivers/net/phy/mxl-86110.c-360-\t\t\t    struct ethtool_wolinfo *wol)\n--\ndrivers/net/phy/mxl-86110.c=936=static struct phy_driver mxl_phy_drvs[] = {\n--\ndrivers/net/phy/mxl-86110.c-944-\t\t.get_wol\t\t= mxl86110_get_wol,\ndrivers/net/phy/mxl-86110.c:945:\t\t.set_wol\t\t= mxl86110_set_wol,\ndrivers/net/phy/mxl-86110.c-946-\t\t.led_brightness_set\t= mxl86110_led_brightness_set,\n--\ndrivers/net/phy/mxl-86110.c-956-\t\t.get_wol\t\t= mxl86110_get_wol,\ndrivers/net/phy/mxl-86110.c:957:\t\t.set_wol\t\t= mxl86110_set_wol,\ndrivers/net/phy/mxl-86110.c-958-\t\t.inband_caps\t\t= mxl86111_inband_caps,\n--\ndrivers/net/phy/mxl-gpy.c=708=static irqreturn_t gpy_handle_interrupt(struct phy_device *phydev)\n--\ndrivers/net/phy/mxl-gpy.c-746-\ndrivers/net/phy/mxl-gpy.c:747:static int gpy_set_wol(struct phy_device *phydev,\ndrivers/net/phy/mxl-gpy.c-748-\t\t       struct ethtool_wolinfo *wol)\n--\ndrivers/net/phy/mxl-gpy.c=1102=static struct phy_driver gpy_drivers[] = {\n--\ndrivers/net/phy/mxl-gpy.c-1117-\t\t.handle_interrupt = gpy_handle_interrupt,\ndrivers/net/phy/mxl-gpy.c:1118:\t\t.set_wol\t= gpy_set_wol,\ndrivers/net/phy/mxl-gpy.c-1119-\t\t.get_wol\t= gpy_get_wol,\n--\ndrivers/net/phy/mxl-gpy.c-1144-\t\t.handle_interrupt = gpy_handle_interrupt,\ndrivers/net/phy/mxl-gpy.c:1145:\t\t.set_wol\t= gpy_set_wol,\ndrivers/net/phy/mxl-gpy.c-1146-\t\t.get_wol\t= gpy_get_wol,\n--\ndrivers/net/phy/mxl-gpy.c-1170-\t\t.handle_interrupt = gpy_handle_interrupt,\ndrivers/net/phy/mxl-gpy.c:1171:\t\t.set_wol\t= gpy_set_wol,\ndrivers/net/phy/mxl-gpy.c-1172-\t\t.get_wol\t= gpy_get_wol,\n--\ndrivers/net/phy/mxl-gpy.c-1197-\t\t.handle_interrupt = gpy_handle_interrupt,\ndrivers/net/phy/mxl-gpy.c:1198:\t\t.set_wol\t= gpy_set_wol,\ndrivers/net/phy/mxl-gpy.c-1199-\t\t.get_wol\t= gpy_get_wol,\n--\ndrivers/net/phy/mxl-gpy.c-1223-\t\t.handle_interrupt = gpy_handle_interrupt,\ndrivers/net/phy/mxl-gpy.c:1224:\t\t.set_wol\t= gpy_set_wol,\ndrivers/net/phy/mxl-gpy.c-1225-\t\t.get_wol\t= gpy_get_wol,\n--\ndrivers/net/phy/mxl-gpy.c-1250-\t\t.handle_interrupt = gpy_handle_interrupt,\ndrivers/net/phy/mxl-gpy.c:1251:\t\t.set_wol\t= gpy_set_wol,\ndrivers/net/phy/mxl-gpy.c-1252-\t\t.get_wol\t= gpy_get_wol,\n--\ndrivers/net/phy/mxl-gpy.c-1276-\t\t.handle_interrupt = gpy_handle_interrupt,\ndrivers/net/phy/mxl-gpy.c:1277:\t\t.set_wol\t= gpy_set_wol,\ndrivers/net/phy/mxl-gpy.c-1278-\t\t.get_wol\t= gpy_get_wol,\n--\ndrivers/net/phy/mxl-gpy.c-1303-\t\t.handle_interrupt = gpy_handle_interrupt,\ndrivers/net/phy/mxl-gpy.c:1304:\t\t.set_wol\t= gpy_set_wol,\ndrivers/net/phy/mxl-gpy.c-1305-\t\t.get_wol\t= gpy_get_wol,\n--\ndrivers/net/phy/mxl-gpy.c-1329-\t\t.handle_interrupt = gpy_handle_interrupt,\ndrivers/net/phy/mxl-gpy.c:1330:\t\t.set_wol\t= gpy_set_wol,\ndrivers/net/phy/mxl-gpy.c-1331-\t\t.get_wol\t= gpy_get_wol,\n--\ndrivers/net/phy/mxl-gpy.c-1355-\t\t.handle_interrupt = gpy_handle_interrupt,\ndrivers/net/phy/mxl-gpy.c:1356:\t\t.set_wol\t= gpy_set_wol,\ndrivers/net/phy/mxl-gpy.c-1357-\t\t.get_wol\t= gpy_get_wol,\n--\ndrivers/net/phy/mxl-gpy.c-1376-\t\t.handle_interrupt = gpy_handle_interrupt,\ndrivers/net/phy/mxl-gpy.c:1377:\t\t.set_wol\t= gpy_set_wol,\ndrivers/net/phy/mxl-gpy.c-1378-\t\t.get_wol\t= gpy_get_wol,\n--\ndrivers/net/phy/mxl-gpy.c-1397-\t\t.handle_interrupt = gpy_handle_interrupt,\ndrivers/net/phy/mxl-gpy.c:1398:\t\t.set_wol\t= gpy_set_wol,\ndrivers/net/phy/mxl-gpy.c-1399-\t\t.get_wol\t= gpy_get_wol,\n--\ndrivers/net/phy/mxl-gpy.c-1418-\t\t.handle_interrupt = gpy_handle_interrupt,\ndrivers/net/phy/mxl-gpy.c:1419:\t\t.set_wol\t= gpy_set_wol,\ndrivers/net/phy/mxl-gpy.c-1420-\t\t.get_wol\t= gpy_get_wol,\n--\ndrivers/net/phy/mxl-gpy.c-1442-\t\t.handle_interrupt = gpy_handle_interrupt,\ndrivers/net/phy/mxl-gpy.c:1443:\t\t.set_wol\t= gpy_set_wol,\ndrivers/net/phy/mxl-gpy.c-1444-\t\t.get_wol\t= gpy_get_wol,\n--\ndrivers/net/phy/mxl-gpy.c-1466-\t\t.handle_interrupt = gpy_handle_interrupt,\ndrivers/net/phy/mxl-gpy.c:1467:\t\t.set_wol\t= gpy_set_wol,\ndrivers/net/phy/mxl-gpy.c-1468-\t\t.get_wol\t= gpy_get_wol,\n--\ndrivers/net/phy/phy.c=2019=EXPORT_SYMBOL(phy_ethtool_set_eee);\n--\ndrivers/net/phy/phy.c-2021-/**\ndrivers/net/phy/phy.c:2022: * phy_ethtool_set_wol - Configure Wake On LAN\ndrivers/net/phy/phy.c-2023- *\n--\ndrivers/net/phy/phy.c-2026- */\ndrivers/net/phy/phy.c:2027:int phy_ethtool_set_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol)\ndrivers/net/phy/phy.c-2028-{\n--\ndrivers/net/phy/phy.c-2030-\ndrivers/net/phy/phy.c:2031:\tif (phydev-\u003edrv \u0026\u0026 phydev-\u003edrv-\u003eset_wol) {\ndrivers/net/phy/phy.c-2032-\t\tmutex_lock(\u0026phydev-\u003elock);\ndrivers/net/phy/phy.c:2033:\t\tret = phydev-\u003edrv-\u003eset_wol(phydev, wol);\ndrivers/net/phy/phy.c-2034-\t\tmutex_unlock(\u0026phydev-\u003elock);\n--\ndrivers/net/phy/phy.c-2040-}\ndrivers/net/phy/phy.c:2041:EXPORT_SYMBOL(phy_ethtool_set_wol);\ndrivers/net/phy/phy.c-2042-\n--\ndrivers/net/phy/phylink.c=2710=static bool phylink_phy_pm_speed_ctrl(struct phylink *pl)\n--\ndrivers/net/phy/phylink.c-2730- * Note: when phylink managed Wake-on-Lan is in use, @mac_wol is ignored.\ndrivers/net/phy/phylink.c:2731: * (struct phylink_mac_ops.mac_set_wol populated.)\ndrivers/net/phy/phylink.c-2732- */\n--\ndrivers/net/phy/phylink.c=2874=EXPORT_SYMBOL_GPL(phylink_ethtool_get_wol);\n--\ndrivers/net/phy/phylink.c-2876-/**\ndrivers/net/phy/phylink.c:2877: * phylink_ethtool_set_wol() - set wake on lan parameters\ndrivers/net/phy/phylink.c-2878- * @pl: a pointer to a \u0026struct phylink returned from phylink_create()\n--\ndrivers/net/phy/phylink.c-2886- */\ndrivers/net/phy/phylink.c:2887:int phylink_ethtool_set_wol(struct phylink *pl, struct ethtool_wolinfo *wol)\ndrivers/net/phy/phylink.c-2888-{\n--\ndrivers/net/phy/phylink.c-2899-\t\tif (phylink_phy_supports_wol(pl, pl-\u003ephydev)) {\ndrivers/net/phy/phylink.c:2900:\t\t\tret = phy_ethtool_set_wol(pl-\u003ephydev, wol);\ndrivers/net/phy/phylink.c-2901-\t\t\tif (ret != 0 \u0026\u0026 ret != -EOPNOTSUPP)\n--\ndrivers/net/phy/phylink.c-2928-\t\tif (pl-\u003ephydev)\ndrivers/net/phy/phylink.c:2929:\t\t\tret = phy_ethtool_set_wol(pl-\u003ephydev, wol);\ndrivers/net/phy/phylink.c-2930-\t}\n--\ndrivers/net/phy/phylink.c-2933-}\ndrivers/net/phy/phylink.c:2934:EXPORT_SYMBOL_GPL(phylink_ethtool_set_wol);\ndrivers/net/phy/phylink.c-2935-\n--\ndrivers/net/phy/qcom/at803x.c=1113=static struct phy_driver at803x_driver[] = {\n--\ndrivers/net/phy/qcom/at803x.c-1122-\t.soft_reset\t\t= genphy_soft_reset,\ndrivers/net/phy/qcom/at803x.c:1123:\t.set_wol\t\t= at803x_set_wol,\ndrivers/net/phy/qcom/at803x.c-1124-\t.get_wol\t\t= at803x_get_wol,\n--\ndrivers/net/phy/qcom/at803x.c-1142-\t.link_change_notify\t= at803x_link_change_notify,\ndrivers/net/phy/qcom/at803x.c:1143:\t.set_wol\t\t= at803x_set_wol,\ndrivers/net/phy/qcom/at803x.c-1144-\t.get_wol\t\t= at803x_get_wol,\n--\ndrivers/net/phy/qcom/at803x.c-1158-\t.soft_reset\t\t= genphy_soft_reset,\ndrivers/net/phy/qcom/at803x.c:1159:\t.set_wol\t\t= at8031_set_wol,\ndrivers/net/phy/qcom/at803x.c-1160-\t.get_wol\t\t= at803x_get_wol,\n--\ndrivers/net/phy/qcom/qca807x.c=791=static struct phy_driver qca807x_drivers[] = {\n--\ndrivers/net/phy/qcom/qca807x.c-810-\t\t.get_phy_stats\t\t= qca807x_get_phy_stats,\ndrivers/net/phy/qcom/qca807x.c:811:\t\t.set_wol\t\t= at8031_set_wol,\ndrivers/net/phy/qcom/qca807x.c-812-\t\t.get_wol\t\t= at803x_get_wol,\n--\ndrivers/net/phy/qcom/qca807x.c-838-\t\t.get_phy_stats\t\t= qca807x_get_phy_stats,\ndrivers/net/phy/qcom/qca807x.c:839:\t\t.set_wol\t\t= at8031_set_wol,\ndrivers/net/phy/qcom/qca807x.c-840-\t\t.get_wol\t\t= at803x_get_wol,\n--\ndrivers/net/phy/qcom/qca808x.c=646=static struct phy_driver qca808x_driver[] = {\n--\ndrivers/net/phy/qcom/qca808x.c-656-\t.set_tunable\t\t= at803x_set_tunable,\ndrivers/net/phy/qcom/qca808x.c:657:\t.set_wol\t\t= at8031_set_wol,\ndrivers/net/phy/qcom/qca808x.c-658-\t.get_wol\t\t= at803x_get_wol,\n--\ndrivers/net/phy/qcom/qcom-phy-lib.c=57=EXPORT_SYMBOL_GPL(at803x_debug_reg_write);\ndrivers/net/phy/qcom/qcom-phy-lib.c-58-\ndrivers/net/phy/qcom/qcom-phy-lib.c:59:int at803x_set_wol(struct phy_device *phydev,\ndrivers/net/phy/qcom/qcom-phy-lib.c-60-\t\t   struct ethtool_wolinfo *wol)\n--\ndrivers/net/phy/qcom/qcom-phy-lib.c-115-}\ndrivers/net/phy/qcom/qcom-phy-lib.c:116:EXPORT_SYMBOL_GPL(at803x_set_wol);\ndrivers/net/phy/qcom/qcom-phy-lib.c-117-\ndrivers/net/phy/qcom/qcom-phy-lib.c:118:int at8031_set_wol(struct phy_device *phydev,\ndrivers/net/phy/qcom/qcom-phy-lib.c-119-\t\t   struct ethtool_wolinfo *wol)\n--\ndrivers/net/phy/qcom/qcom-phy-lib.c-123-\t/* First setup MAC address and enable WOL interrupt */\ndrivers/net/phy/qcom/qcom-phy-lib.c:124:\tret = at803x_set_wol(phydev, wol);\ndrivers/net/phy/qcom/qcom-phy-lib.c-125-\tif (ret)\n--\ndrivers/net/phy/qcom/qcom-phy-lib.c-140-}\ndrivers/net/phy/qcom/qcom-phy-lib.c:141:EXPORT_SYMBOL_GPL(at8031_set_wol);\ndrivers/net/phy/qcom/qcom-phy-lib.c-142-\n--\ndrivers/net/phy/qcom/qcom.h=236=int at803x_debug_reg_write(struct phy_device *phydev, u16 reg, u16 data);\ndrivers/net/phy/qcom/qcom.h:237:int at803x_set_wol(struct phy_device *phydev,\ndrivers/net/phy/qcom/qcom.h-238-\t\t   struct ethtool_wolinfo *wol);\ndrivers/net/phy/qcom/qcom.h:239:int at8031_set_wol(struct phy_device *phydev,\ndrivers/net/phy/qcom/qcom.h-240-\t\t   struct ethtool_wolinfo *wol);\n--\ndrivers/net/phy/realtek/realtek_main.c=957=static void rtl8211f_get_wol(struct phy_device *dev, struct ethtool_wolinfo *wol)\n--\ndrivers/net/phy/realtek/realtek_main.c-978-\ndrivers/net/phy/realtek/realtek_main.c:979:static int rtl8211f_set_wol(struct phy_device *dev, struct ethtool_wolinfo *wol)\ndrivers/net/phy/realtek/realtek_main.c-980-{\n--\ndrivers/net/phy/realtek/realtek_main.c=3046=static struct phy_driver realtek_drvs[] = {\n--\ndrivers/net/phy/realtek/realtek_main.c-3126-\t\t.handle_interrupt = rtl8211f_handle_interrupt,\ndrivers/net/phy/realtek/realtek_main.c:3127:\t\t.set_wol\t= rtl8211f_set_wol,\ndrivers/net/phy/realtek/realtek_main.c-3128-\t\t.get_wol\t= rtl8211f_get_wol,\n--\ndrivers/net/phy/smsc.c=377=static int lan874x_chk_wol_pattern(const u8 pattern[], const u16 *mask,\n--\ndrivers/net/phy/smsc.c-413-\ndrivers/net/phy/smsc.c:414:static int lan874x_set_wol_pattern(struct phy_device *phydev, u16 val,\ndrivers/net/phy/smsc.c-415-\t\t\t\t   const u8 data[], u8 datalen,\n--\ndrivers/net/phy/smsc.c-452-\ndrivers/net/phy/smsc.c:453:static int lan874x_set_wol(struct phy_device *phydev,\ndrivers/net/phy/smsc.c-454-\t\t\t   struct ethtool_wolinfo *wol)\n--\ndrivers/net/phy/smsc.c-510-\t\tval = 12 | MII_LAN874X_PHY_WOL_FILTER_BCSTEN;\ndrivers/net/phy/smsc.c:511:\t\trc = lan874x_set_wol_pattern(phydev, val, data, datalen, mask,\ndrivers/net/phy/smsc.c-512-\t\t\t\t\t     2);\n--\ndrivers/net/phy/smsc.c-520-\t\tval = MII_LAN874X_PHY_WOL_FILTER_MCASTTEN;\ndrivers/net/phy/smsc.c:521:\t\trc = lan874x_set_wol_pattern(phydev, val, data, 0, NULL, 0);\ndrivers/net/phy/smsc.c-522-\t\tif (rc \u003c 0)\n--\ndrivers/net/phy/smsc.c=687=static struct phy_driver smsc_phy_driver[] = {\n--\ndrivers/net/phy/smsc.c-838-\t/* WoL */\ndrivers/net/phy/smsc.c:839:\t.set_wol\t= lan874x_set_wol,\ndrivers/net/phy/smsc.c-840-\t.get_wol\t= lan874x_get_wol,\n--\ndrivers/net/phy/smsc.c-875-\t/* WoL */\ndrivers/net/phy/smsc.c:876:\t.set_wol\t= lan874x_set_wol,\ndrivers/net/phy/smsc.c-877-\t.get_wol\t= lan874x_get_wol,\n"
}

gemini-3.8-flash

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							input: 61371
							output: 23
							thoughts: 69
						

**Investigating the Wake-on-LAN Configuration**

Okay, hold on a second! I'm digging into this `phy_ethtool_set_wol` function, specifically within the `phy_device` structure. It's the place to set up Wake-on-LAN functionality. Now, my immediate question is, where is this function actually *used*? I need to understand the call flow to fully grasp its impact and potential interactions. Time to fire up the grep and hunt down all instances of `phy_ethtool_set_wol`. That'll give me the context I need.

{
  "Expression": "phy_ethtool_set_wol"
}

{
  "Output": "Documentation/networking/sfp-phylink.rst=74=this documentation.\n--\nDocumentation/networking/sfp-phylink.rst-127-      - phylink_ethtool_get_wol(priv-\u003ephylink, wol)\nDocumentation/networking/sfp-phylink.rst:128:    * - phy_ethtool_set_wol(phydev, wol)\nDocumentation/networking/sfp-phylink.rst-129-      - phylink_ethtool_set_wol(priv-\u003ephylink, wol)\n--\ndrivers/net/ethernet/broadcom/asp2/bcmasp_ethtool.c=194=static int bcmasp_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)\n--\ndrivers/net/ethernet/broadcom/asp2/bcmasp_ethtool.c-202-\tif (dev-\u003ephydev) {\ndrivers/net/ethernet/broadcom/asp2/bcmasp_ethtool.c:203:\t\tret = phy_ethtool_set_wol(dev-\u003ephydev, wol);\ndrivers/net/ethernet/broadcom/asp2/bcmasp_ethtool.c-204-\t\tif (ret != -EOPNOTSUPP \u0026\u0026 wol-\u003ewolopts)\n--\ndrivers/net/ethernet/broadcom/genet/bcmgenet_wol.c=72=int bcmgenet_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)\n--\ndrivers/net/ethernet/broadcom/genet/bcmgenet_wol.c-79-\tif (dev-\u003ephydev) {\ndrivers/net/ethernet/broadcom/genet/bcmgenet_wol.c:80:\t\tret = phy_ethtool_set_wol(dev-\u003ephydev, wol);\ndrivers/net/ethernet/broadcom/genet/bcmgenet_wol.c-81-\t\tif (ret != -EOPNOTSUPP \u0026\u0026 wol-\u003ewolopts)\n--\ndrivers/net/ethernet/freescale/enetc/enetc_ethtool.c=1235=static int enetc_set_wol(struct net_device *dev,\n--\ndrivers/net/ethernet/freescale/enetc/enetc_ethtool.c-1242-\ndrivers/net/ethernet/freescale/enetc/enetc_ethtool.c:1243:\tret = phy_ethtool_set_wol(dev-\u003ephydev, wol);\ndrivers/net/ethernet/freescale/enetc/enetc_ethtool.c-1244-\tif (!ret)\n--\ndrivers/net/ethernet/marvell/mv643xx_eth.c=1551=mv643xx_eth_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)\n--\ndrivers/net/ethernet/marvell/mv643xx_eth.c-1557-\ndrivers/net/ethernet/marvell/mv643xx_eth.c:1558:\terr = phy_ethtool_set_wol(dev-\u003ephydev, wol);\ndrivers/net/ethernet/marvell/mv643xx_eth.c-1559-\t/* Given that mv643xx_eth works without the marvell-specific PHY driver,\n--\ndrivers/net/ethernet/socionext/sni_ave.c=428=static int __ave_ethtool_set_wol(struct net_device *ndev,\n--\ndrivers/net/ethernet/socionext/sni_ave.c-434-\ndrivers/net/ethernet/socionext/sni_ave.c:435:\treturn phy_ethtool_set_wol(ndev-\u003ephydev, wol);\ndrivers/net/ethernet/socionext/sni_ave.c-436-}\n--\ndrivers/net/ethernet/ti/cpsw_ethtool.c=339=int cpsw_set_wol(struct net_device *ndev, struct ethtool_wolinfo *wol)\n--\ndrivers/net/ethernet/ti/cpsw_ethtool.c-345-\tif (cpsw-\u003eslaves[slave_no].phy)\ndrivers/net/ethernet/ti/cpsw_ethtool.c:346:\t\treturn phy_ethtool_set_wol(cpsw-\u003eslaves[slave_no].phy, wol);\ndrivers/net/ethernet/ti/cpsw_ethtool.c-347-\telse\n--\ndrivers/net/phy/phy.c=2019=EXPORT_SYMBOL(phy_ethtool_set_eee);\n--\ndrivers/net/phy/phy.c-2021-/**\ndrivers/net/phy/phy.c:2022: * phy_ethtool_set_wol - Configure Wake On LAN\ndrivers/net/phy/phy.c-2023- *\n--\ndrivers/net/phy/phy.c-2026- */\ndrivers/net/phy/phy.c:2027:int phy_ethtool_set_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol)\ndrivers/net/phy/phy.c-2028-{\n--\ndrivers/net/phy/phy.c-2040-}\ndrivers/net/phy/phy.c:2041:EXPORT_SYMBOL(phy_ethtool_set_wol);\ndrivers/net/phy/phy.c-2042-\n--\ndrivers/net/phy/phylink.c=2887=int phylink_ethtool_set_wol(struct phylink *pl, struct ethtool_wolinfo *wol)\n--\ndrivers/net/phy/phylink.c-2899-\t\tif (phylink_phy_supports_wol(pl, pl-\u003ephydev)) {\ndrivers/net/phy/phylink.c:2900:\t\t\tret = phy_ethtool_set_wol(pl-\u003ephydev, wol);\ndrivers/net/phy/phylink.c-2901-\t\t\tif (ret != 0 \u0026\u0026 ret != -EOPNOTSUPP)\n--\ndrivers/net/phy/phylink.c-2928-\t\tif (pl-\u003ephydev)\ndrivers/net/phy/phylink.c:2929:\t\t\tret = phy_ethtool_set_wol(pl-\u003ephydev, wol);\ndrivers/net/phy/phylink.c-2930-\t}\n--\ndrivers/net/usb/lan78xx.c=1788=static int lan78xx_set_wol(struct net_device *netdev,\n--\ndrivers/net/usb/lan78xx.c-1807-\ndrivers/net/usb/lan78xx.c:1808:\tret = phy_ethtool_set_wol(netdev-\u003ephydev, wol);\ndrivers/net/usb/lan78xx.c-1809-\n--\ninclude/linux/phy.h=2453=int phy_ethtool_get_eee(struct phy_device *phydev, struct ethtool_keee *data);\ninclude/linux/phy.h:2454:int phy_ethtool_set_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol);\ninclude/linux/phy.h-2455-void phy_ethtool_get_wol(struct phy_device *phydev,\n"
}

gemini-3.8-flash

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							input: 63460
							output: 35
							thoughts: 159
						

**Analyzing the LAN78XX Driver for Wake-on-LAN Functionality**

Okay, hold on a second! My focus is drawn to the `lan78xx` driver and, more specifically, the `phylink_ethtool_set_wol` function. Let's dig in. I recall that `lan78xx.c` is the USB network adapter driver for the `CONFIG_USB_LAN78XX` configuration. I need to understand how it handles Wake-on-LAN.

A thought pops up: does the `lan78xx` driver utilize a Marvell PHY? I'll check `lan78xx.c`. And sure enough: `dev->mdiobus->phy_mask = ~(1 << 1);` indicates the driver is configured to connect to a PHY at address 1.

The question then becomes: how does `lan78xx` establish the PHY connection, using `phy_connect` or `phylink`? I'll check functions like `lan78xx_phy_init` within `lan78xx.c`. This should clarify the PHY interaction and the WOL mechanism.

no matches

{
  "Expression": "phy_connect",
  "PathPrefix": "drivers/net/usb/lan78xx.c"
}

{
  "error": "no matches"
}

gemini-3.8-flash

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### 1. Approaches Tried and Results

- **Diff / Patch Analysis:**
  - Patch touches `drivers/net/phy/marvell.c` inside `m88e1318_set_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol)`.
  - Added logic when `!(wol->wolopts & (WAKE_MAGIC | WAKE_PHY))`: clears WoL interrupt setup (`MII_88E1318S_PHY_CSIER_WOL_EIE` on page `MII_MARVELL_COPPER_PAGE`), switches to `MII_MARVELL_LED_PAGE`, and modifies `MII_88E1318S_PHY_LED_TCR` based on `phy_interrupt_is_valid(phydev)`.
  - Target architecture: `amd64`.

- **Driver & Subsystem Exploration:**
  - Searched for uses of `m88e1318_set_wol`:
    - Registered in `marvell_drivers[]` for `MARVELL_PHY_ID_88E1318S` (0x01410e90) and `MARVELL_PHY_ID_88E1510` (0x01410dd0).
  - Searched Kconfig:
    - Controlled by `CONFIG_MARVELL_PHY` (`tristate "Marvell Alaska PHYs"` in `drivers/net/phy/Kconfig`).
  - Investigated reachability from virtualization / fuzzing environments (QEMU / syzkaller):
    - Investigated how MDIO buses and PHY devices are instantiated.
    - Standard PHY devices are probed via MDIO bus reads of `MII_PHYSID1` and `MII_PHYSID2` (or instantiated via Device Tree / ACPI).
    - Checked USB network drivers to see if any USB net driver registers an MDIO bus dynamically via USB gadget emulation (e.g. syzkaller USB fuzzing with Raw Gadget / Dummy HCD):
      - Found `asix_devices.c` (`ax88772_init_mdio`) and `ax88172a.c` (`ax88172a_init_mdio`), which allocate an `mii_bus` via `mdiobus_alloc()` and call `mdiobus_register()`.
      - Found `lan78xx.c` (`lan78xx_mdio_init`), which also registers an MDIO bus.
      - During `mdiobus_register()`, the kernel scans MDIO addresses (0 to 31) by issuing MDIO read commands to the underlying adapter (e.g. over USB control requests).

### 2. Current Hypotheses / Active Lines of Investigation

- **Hypothesis 1: Reachability via USB Network Adapter Emulation (Raw Gadget / Syzkaller USB):**
  - Syzkaller fuzzes USB device enumeration via USB raw-gadget / dummy_hcd.
  - If a USB gadget masquerades as an ASIX AX88772 / AX88172A or LAN78xx adapter, the driver's probe routine registers an MDIO bus (`mdiobus_register`).
  - During MDIO bus registration, `mdiobus_scan()` reads register 2 and 3 (`MII_PHYSID1` and `MII_PHYSID2`) from each PHY address.
  - If the emulated USB gadget responds with `MARVELL_PHY_ID_88E1318S` or `MARVELL_PHY_ID_88E1510` (e.g., ID `0x01410e90` or `0x01410dd0`), the driver core matches and binds `marvell.c` (`marvell_drivers`).
  - Once attached, `ethtool -s <dev> wol ...` (via `SIOCETHTOOL` / netlink `ETHTOOL_MSG_WOL_SET`) can call into `.set_wol = m88e1318_set_wol`.
  - Need to verify if this makes the driver reachable or if it should be considered structurally unreachable hardware (does syzkaller have MDIO-over-USB templates, or is standard QEMU lacking Marvell PHY hardware?).

- **Hypothesis 2: Hardware-specific MDIO PHY / Structurally Unreachable:**
  - Marvell Alaska 88E1318S / 88E1510 PHYs are physical transceiver chips wired to MACs (often on embedded ARM/MIPS boards or discrete NICs).
  - QEMU amd64 does not emulate a Marvell 88E1318S PHY. Standard QEMU NICs (e1000, virtio-net, rtl8139, pcnet, etc.) do not instantiate Marvell Alaska PHYs.
  - Does phylib provide a virtual PHY mechanism, or can mock PHY devices be created via Netlink / sysfs / tun / tap / dummy? (Need to check if virtual MDIO buses exist in mainline, like `mdio-mock` or similar).

### 3. Critical Code Snippets, Symbols, and Paths

- **File modified:** `drivers/net/phy/marvell.c`
- **Function modified:**
  ```c
  static int m88e1318_set_wol(struct phy_device *phydev,
                              struct ethtool_wolinfo *wol)
  ```
- **Key registers/constants used in the patch:**
  - `MII_MARVELL_COPPER_PAGE` (0x00)
  - `MII_88E1318S_PHY_CSIER` (copper specific interrupt enable register)
  - `MII_88E1318S_PHY_CSIER_WOL_EIE`
  - `MII_MARVELL_LED_PAGE`
  - `MII_88E1318S_PHY_LED_TCR`
  - `MII_88E1318S_PHY_LED_TCR_FORCE_INT`
  - `MII_88E1318S_PHY_LED_TCR_INTn_ENABLE`
  - `MII_88E1318S_PHY_LED_TCR_INT_ACTIVE_LOW`
  - `phy_interrupt_is_valid(phydev)`
  - `phy_restore_page(phydev, oldpage, err)`
- **Relevant Configs:**
  - `CONFIG_MARVELL_PHY`
  - `CONFIG_PHYLIB`
  - `CONFIG_MDIO_BUS`

### 4. Next Steps & Potential Loops to Avoid

- Avoid repeating general MDIO searches across `drivers/net/` (which returned 500+ lines in previous queries).
- Check `drivers/net/phy/mdio_bus_provider.c` or `mdio_bus.c` to see how `mdiobus_register` probes devices and whether any virtual/dummy MDIO buses exist in tree.
- Determine conclusively whether `marvell.c` falls under "Structurally unreachable hardware" per guidelines (Section 2) or whether USB gadget / virtual bus emulation makes it reachable and worth fuzzing.

							input: 44852
							output: 1676
							thoughts: 0
						

gemini-3.8-flash

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							input: 24290
							output: 35
							thoughts: 0
						

no matches

{
  "Expression": "phy_attach",
  "PathPrefix": "drivers/net/usb/lan78xx.c"
}

{
  "error": "no matches"
}

gemini-3.8-flash

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							input: 24339
							output: 34
							thoughts: 0
						

{
  "Expression": "phydev",
  "PathPrefix": "drivers/net/usb/lan78xx.c"
}

{
  "Output": "drivers/net/usb/lan78xx.c=1788=static int lan78xx_set_wol(struct net_device *netdev,\n--\ndrivers/net/usb/lan78xx.c-1807-\ndrivers/net/usb/lan78xx.c:1808:\tret = phy_ethtool_set_wol(netdev-\u003ephydev, wol);\ndrivers/net/usb/lan78xx.c-1809-\n--\ndrivers/net/usb/lan78xx.c=2649=static struct phy_device *lan78xx_get_phy(struct lan78xx_net *dev)\ndrivers/net/usb/lan78xx.c-2650-{\ndrivers/net/usb/lan78xx.c:2651:\tstruct phy_device *phydev;\ndrivers/net/usb/lan78xx.c-2652-\ndrivers/net/usb/lan78xx.c-2653-\t/* Attempt to locate a PHY on the MDIO bus */\ndrivers/net/usb/lan78xx.c:2654:\tphydev = phy_find_first(dev-\u003emdiobus);\ndrivers/net/usb/lan78xx.c-2655-\n--\ndrivers/net/usb/lan78xx.c-2657-\tcase ID_REV_CHIP_ID_7801_:\ndrivers/net/usb/lan78xx.c:2658:\t\tif (phydev) {\ndrivers/net/usb/lan78xx.c-2659-\t\t\t/* External RGMII PHY detected */\ndrivers/net/usb/lan78xx.c-2660-\t\t\tdev-\u003einterface = PHY_INTERFACE_MODE_RGMII_ID;\ndrivers/net/usb/lan78xx.c:2661:\t\t\tphydev-\u003eis_internal = false;\ndrivers/net/usb/lan78xx.c-2662-\ndrivers/net/usb/lan78xx.c:2663:\t\t\tif (!phydev-\u003edrv)\ndrivers/net/usb/lan78xx.c-2664-\t\t\t\tnetdev_warn(dev-\u003enet,\n--\ndrivers/net/usb/lan78xx.c-2666-\ndrivers/net/usb/lan78xx.c:2667:\t\t\treturn phydev;\ndrivers/net/usb/lan78xx.c-2668-\t\t}\n--\ndrivers/net/usb/lan78xx.c-2675-\tcase ID_REV_CHIP_ID_7850_:\ndrivers/net/usb/lan78xx.c:2676:\t\tif (!phydev)\ndrivers/net/usb/lan78xx.c-2677-\t\t\treturn ERR_PTR(-ENODEV);\n--\ndrivers/net/usb/lan78xx.c-2680-\t\tdev-\u003einterface = PHY_INTERFACE_MODE_GMII;\ndrivers/net/usb/lan78xx.c:2681:\t\tphydev-\u003eis_internal = true;\ndrivers/net/usb/lan78xx.c:2682:\t\treturn phydev;\ndrivers/net/usb/lan78xx.c-2683-\n--\ndrivers/net/usb/lan78xx.c=2711=static int lan78xx_mac_prepare_for_phy(struct lan78xx_net *dev)\n--\ndrivers/net/usb/lan78xx.c-2758- * @dev: LAN78xx device\ndrivers/net/usb/lan78xx.c:2759: * @phydev: PHY device (must be valid)\ndrivers/net/usb/lan78xx.c-2760- *\n--\ndrivers/net/usb/lan78xx.c=2769=static int lan78xx_configure_leds_from_dt(struct lan78xx_net *dev,\ndrivers/net/usb/lan78xx.c:2770:\t\t\t\t\t  struct phy_device *phydev)\ndrivers/net/usb/lan78xx.c-2771-{\ndrivers/net/usb/lan78xx.c:2772:\tstruct device_node *np = phydev-\u003emdio.dev.of_node;\ndrivers/net/usb/lan78xx.c-2773-\tu32 reg;\n--\ndrivers/net/usb/lan78xx.c=2858=static int lan78xx_phy_init(struct lan78xx_net *dev)\ndrivers/net/usb/lan78xx.c-2859-{\ndrivers/net/usb/lan78xx.c:2860:\tstruct phy_device *phydev;\ndrivers/net/usb/lan78xx.c-2861-\tint ret;\ndrivers/net/usb/lan78xx.c-2862-\ndrivers/net/usb/lan78xx.c:2863:\tphydev = lan78xx_get_phy(dev);\ndrivers/net/usb/lan78xx.c:2864:\t/* phydev can be NULL if no PHY is found and the chip is LAN7801,\ndrivers/net/usb/lan78xx.c-2865-\t * which will use a fixed link later.\n--\ndrivers/net/usb/lan78xx.c-2867-\t */\ndrivers/net/usb/lan78xx.c:2868:\tif (IS_ERR(phydev))\ndrivers/net/usb/lan78xx.c:2869:\t\treturn PTR_ERR(phydev);\ndrivers/net/usb/lan78xx.c-2870-\n--\ndrivers/net/usb/lan78xx.c-2883-\t */\ndrivers/net/usb/lan78xx.c:2884:\tif (!phydev) {\ndrivers/net/usb/lan78xx.c-2885-\t\tret = lan78xx_set_fixed_link(dev);\n--\ndrivers/net/usb/lan78xx.c-2896-\tif (dev-\u003edomain_data.phyirq \u003e 0)\ndrivers/net/usb/lan78xx.c:2897:\t\tphydev-\u003eirq = dev-\u003edomain_data.phyirq;\ndrivers/net/usb/lan78xx.c-2898-\telse\ndrivers/net/usb/lan78xx.c:2899:\t\tphydev-\u003eirq = PHY_POLL;\ndrivers/net/usb/lan78xx.c:2900:\tnetdev_dbg(dev-\u003enet, \"phydev-\u003eirq = %d\\n\", phydev-\u003eirq);\ndrivers/net/usb/lan78xx.c-2901-\ndrivers/net/usb/lan78xx.c:2902:\tret = phylink_connect_phy(dev-\u003ephylink, phydev);\ndrivers/net/usb/lan78xx.c-2903-\tif (ret) {\n--\ndrivers/net/usb/lan78xx.c-2908-\ndrivers/net/usb/lan78xx.c:2909:\tret = lan78xx_configure_leds_from_dt(dev, phydev);\ndrivers/net/usb/lan78xx.c-2910-\tif (ret \u003c 0)\n"
}

gemini-3.8-flash

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							input: 26242
							output: 38
							thoughts: 0
						

no matches

{
  "Expression": "mdio_hw_init",
  "PathPrefix": "drivers/net/usb/lan78xx.c"
}

{
  "error": "no matches"
}

gemini-3.8-flash

null

null

							input: 26294
							output: 37
							thoughts: 0
						

{
  "Expression": "mdiobus_register",
  "PathPrefix": "drivers/net/usb/lan78xx.c"
}

{
  "Output": "drivers/net/usb/lan78xx.c=2091=static int lan78xx_mdio_init(struct lan78xx_net *dev)\n--\ndrivers/net/usb/lan78xx.c-2121-\tnode = of_get_child_by_name(dev-\u003eudev-\u003edev.of_node, \"mdio\");\ndrivers/net/usb/lan78xx.c:2122:\tret = of_mdiobus_register(dev-\u003emdiobus, node);\ndrivers/net/usb/lan78xx.c-2123-\tof_node_put(node);\n"
}

gemini-3.8-flash

null

null

							input: 26498
							output: 31
							thoughts: 0
						

{
  "Expression": "mdiobus_register",
  "PathPrefix": "drivers/net/usb/"
}

{
  "Output": "drivers/net/usb/asix_devices.c=669=static int ax88772_init_mdio(struct usbnet *dev)\n--\ndrivers/net/usb/asix_devices.c-686-\ndrivers/net/usb/asix_devices.c:687:\tret = mdiobus_register(priv-\u003emdio);\ndrivers/net/usb/asix_devices.c-688-\tif (ret) {\n--\ndrivers/net/usb/ax88172a.c=61=static int ax88172a_init_mdio(struct usbnet *dev)\n--\ndrivers/net/usb/ax88172a.c-79-\ndrivers/net/usb/ax88172a.c:80:\tret = mdiobus_register(priv-\u003emdio);\ndrivers/net/usb/ax88172a.c-81-\tif (ret) {\n--\ndrivers/net/usb/lan78xx.c=2091=static int lan78xx_mdio_init(struct lan78xx_net *dev)\n--\ndrivers/net/usb/lan78xx.c-2121-\tnode = of_get_child_by_name(dev-\u003eudev-\u003edev.of_node, \"mdio\");\ndrivers/net/usb/lan78xx.c:2122:\tret = of_mdiobus_register(dev-\u003emdiobus, node);\ndrivers/net/usb/lan78xx.c-2123-\tof_node_put(node);\n--\ndrivers/net/usb/smsc95xx.c=1147=static int smsc95xx_bind(struct usbnet *dev, struct usb_interface *intf)\n--\ndrivers/net/usb/smsc95xx.c-1241-\ndrivers/net/usb/smsc95xx.c:1242:\tret = mdiobus_register(pdata-\u003emdiobus);\ndrivers/net/usb/smsc95xx.c-1243-\tif (ret) {\n"
}

gemini-3.8-flash

null

null

							input: 27067
							output: 41
							thoughts: 0
						

{
  "File": "drivers/net/usb/lan78xx.c",
  "FirstLine": 2110,
  "LineCount": 40
}

{
  "Contents": "2110:\t\n2111:\t\tswitch (dev-\u003echipid) {\n2112:\t\tcase ID_REV_CHIP_ID_7800_:\n2113:\t\tcase ID_REV_CHIP_ID_7850_:\n2114:\t\t\t/* set to internal PHY id */\n2115:\t\t\tdev-\u003emdiobus-\u003ephy_mask = ~(1 \u003c\u003c 1);\n2116:\t\t\tbreak;\n2117:\t\tcase ID_REV_CHIP_ID_7801_:\n2118:\t\t\tbreak;\n2119:\t\t}\n2120:\t\n2121:\t\tnode = of_get_child_by_name(dev-\u003eudev-\u003edev.of_node, \"mdio\");\n2122:\t\tret = of_mdiobus_register(dev-\u003emdiobus, node);\n2123:\t\tof_node_put(node);\n2124:\t\tif (ret) {\n2125:\t\t\tnetdev_err(dev-\u003enet, \"can't register MDIO bus\\n\");\n2126:\t\t\tgoto exit1;\n2127:\t\t}\n2128:\t\n2129:\t\tnetdev_dbg(dev-\u003enet, \"registered mdiobus bus %s\\n\", dev-\u003emdiobus-\u003eid);\n2130:\t\treturn 0;\n2131:\texit1:\n2132:\t\tmdiobus_free(dev-\u003emdiobus);\n2133:\t\treturn ret;\n2134:\t}\n2135:\t\n2136:\tstatic void lan78xx_remove_mdio(struct lan78xx_net *dev)\n2137:\t{\n2138:\t\tmdiobus_unregister(dev-\u003emdiobus);\n2139:\t\tmdiobus_free(dev-\u003emdiobus);\n2140:\t}\n2141:\t\n2142:\tstatic int irq_map(struct irq_domain *d, unsigned int irq,\n2143:\t\t\t   irq_hw_number_t hwirq)\n2144:\t{\n2145:\t\tstruct irq_domain_data *data = d-\u003ehost_data;\n2146:\t\n2147:\t\tirq_set_chip_data(irq, data);\n2148:\t\tirq_set_chip_and_handler(irq, data-\u003eirqchip, data-\u003eirq_handler);\n2149:\t\tirq_set_noprobe(irq);\n"
}

gemini-3.8-flash

null

null

							input: 27765
							output: 41
							thoughts: 0
						

{
  "File": "drivers/net/usb/lan78xx.c",
  "FirstLine": 2910,
  "LineCount": 45
}

{
  "Contents": "2910:\t\tif (ret \u003c 0)\n2911:\t\t\tgoto phylink_uninit;\n2912:\t\n2913:\t\treturn 0;\n2914:\t\n2915:\tphylink_uninit:\n2916:\t\tlan78xx_phy_uninit(dev);\n2917:\t\n2918:\t\treturn ret;\n2919:\t}\n2920:\t\n2921:\tstatic int lan78xx_set_rx_max_frame_length(struct lan78xx_net *dev, int size)\n2922:\t{\n2923:\t\tbool rxenabled;\n2924:\t\tu32 buf;\n2925:\t\tint ret;\n2926:\t\n2927:\t\tret = lan78xx_read_reg(dev, MAC_RX, \u0026buf);\n2928:\t\tif (ret \u003c 0)\n2929:\t\t\treturn ret;\n2930:\t\n2931:\t\trxenabled = ((buf \u0026 MAC_RX_RXEN_) != 0);\n2932:\t\n2933:\t\tif (rxenabled) {\n2934:\t\t\tbuf \u0026= ~MAC_RX_RXEN_;\n2935:\t\t\tret = lan78xx_write_reg(dev, MAC_RX, buf);\n2936:\t\t\tif (ret \u003c 0)\n2937:\t\t\t\treturn ret;\n2938:\t\t}\n2939:\t\n2940:\t\t/* add 4 to size for FCS */\n2941:\t\tbuf \u0026= ~MAC_RX_MAX_SIZE_MASK_;\n2942:\t\tbuf |= (((size + 4) \u003c\u003c MAC_RX_MAX_SIZE_SHIFT_) \u0026 MAC_RX_MAX_SIZE_MASK_);\n2943:\t\n2944:\t\tret = lan78xx_write_reg(dev, MAC_RX, buf);\n2945:\t\tif (ret \u003c 0)\n2946:\t\t\treturn ret;\n2947:\t\n2948:\t\tif (rxenabled) {\n2949:\t\t\tbuf |= MAC_RX_RXEN_;\n2950:\t\t\tret = lan78xx_write_reg(dev, MAC_RX, buf);\n2951:\t\t\tif (ret \u003c 0)\n2952:\t\t\t\treturn ret;\n2953:\t\t}\n2954:\t\n"
}

gemini-3.8-flash

null

null

							input: 28436
							output: 40
							thoughts: 0
						

{
  "Expression": "lan78xx_set_wol",
  "PathPrefix": "drivers/net/usb/lan78xx.c"
}

{
  "Output": "drivers/net/usb/lan78xx.c=1759=static void lan78xx_get_wol(struct net_device *netdev,\n--\ndrivers/net/usb/lan78xx.c-1787-\ndrivers/net/usb/lan78xx.c:1788:static int lan78xx_set_wol(struct net_device *netdev,\ndrivers/net/usb/lan78xx.c-1789-\t\t\t   struct ethtool_wolinfo *wol)\n--\ndrivers/net/usb/lan78xx.c=1918=static const struct ethtool_ops lan78xx_ethtool_ops = {\n--\ndrivers/net/usb/lan78xx.c-1931-\t.get_wol\t= lan78xx_get_wol,\ndrivers/net/usb/lan78xx.c:1932:\t.set_wol\t= lan78xx_set_wol,\ndrivers/net/usb/lan78xx.c-1933-\t.get_ts_info\t= ethtool_op_get_ts_info,\n"
}

gemini-3.8-flash

null

null

							input: 28769
							output: 41
							thoughts: 0
						

{
  "File": "drivers/net/usb/lan78xx.c",
  "FirstLine": 1788,
  "LineCount": 25
}

{
  "Contents": "1788:\tstatic int lan78xx_set_wol(struct net_device *netdev,\n1789:\t\t\t\t   struct ethtool_wolinfo *wol)\n1790:\t{\n1791:\t\tstruct lan78xx_net *dev = netdev_priv(netdev);\n1792:\t\tstruct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev-\u003edata[0]);\n1793:\t\tint ret;\n1794:\t\n1795:\t\tif (wol-\u003ewolopts \u0026 ~WAKE_ALL)\n1796:\t\t\treturn -EINVAL;\n1797:\t\n1798:\t\tret = usb_autopm_get_interface(dev-\u003eintf);\n1799:\t\tif (ret \u003c 0)\n1800:\t\t\treturn ret;\n1801:\t\n1802:\t\tpdata-\u003ewol = wol-\u003ewolopts;\n1803:\t\n1804:\t\tret = device_set_wakeup_enable(\u0026dev-\u003eudev-\u003edev, (bool)wol-\u003ewolopts);\n1805:\t\tif (ret \u003c 0)\n1806:\t\t\tgoto exit_pm_put;\n1807:\t\n1808:\t\tret = phy_ethtool_set_wol(netdev-\u003ephydev, wol);\n1809:\t\n1810:\texit_pm_put:\n1811:\t\tusb_autopm_put_interface(dev-\u003eintf);\n1812:\t\n"
}

gemini-3.8-flash

null

null

							input: 29208
							output: 30
							thoughts: 0
						

{
  "Expression": "MARVELL_PHY_ID_88E1318S"
}

{
  "Output": "drivers/net/phy/marvell.c=843=static void marvell_config_led(struct phy_device *phydev)\n--\ndrivers/net/phy/marvell.c-850-\tcase MARVELL_PHY_FAMILY_ID(MARVELL_PHY_ID_88E1121R):\ndrivers/net/phy/marvell.c:851:\tcase MARVELL_PHY_FAMILY_ID(MARVELL_PHY_ID_88E1318S):\ndrivers/net/phy/marvell.c-852-\t\tdef_config = MII_88E1121_PHY_LED_DEF;\n--\ndrivers/net/phy/marvell.c=3696=static struct phy_driver marvell_drivers[] = {\n--\ndrivers/net/phy/marvell.c-3840-\t{\ndrivers/net/phy/marvell.c:3841:\t\t.phy_id = MARVELL_PHY_ID_88E1318S,\ndrivers/net/phy/marvell.c-3842-\t\t.phy_id_mask = MARVELL_PHY_ID_MASK,\n--\ndrivers/net/phy/marvell.c=4208=static const struct mdio_device_id __maybe_unused marvell_tbl[] = {\n--\ndrivers/net/phy/marvell.c-4218-\t{ MARVELL_PHY_ID_88E1240, MARVELL_PHY_ID_MASK },\ndrivers/net/phy/marvell.c:4219:\t{ MARVELL_PHY_ID_88E1318S, MARVELL_PHY_ID_MASK },\ndrivers/net/phy/marvell.c-4220-\t{ MARVELL_PHY_ID_88E1116R, MARVELL_PHY_ID_MASK },\n--\ninclude/linux/marvell_phy.h-17-#define MARVELL_PHY_ID_88E1240\t\t0x01410e30\ninclude/linux/marvell_phy.h:18:#define MARVELL_PHY_ID_88E1318S\t\t0x01410e90\ninclude/linux/marvell_phy.h-19-#define MARVELL_PHY_ID_88E1340S\t\t0x01410dc0\n"
}

gemini-3.8-flash

null

null

							input: 29844
							output: 29
							thoughts: 0
						

{
  "Expression": "MARVELL_PHY_ID_88E1510"
}

{
  "Output": "drivers/net/phy/marvell.c=843=static void marvell_config_led(struct phy_device *phydev)\n--\ndrivers/net/phy/marvell.c-858-\t */\ndrivers/net/phy/marvell.c:859:\tcase MARVELL_PHY_FAMILY_ID(MARVELL_PHY_ID_88E1510):\ndrivers/net/phy/marvell.c-860-\t\tif (phydev-\u003edev_flags \u0026 MARVELL_PHY_LED0_LINK_LED1_ACTIVE)\n--\ndrivers/net/phy/marvell.c=3696=static struct phy_driver marvell_drivers[] = {\n--\ndrivers/net/phy/marvell.c-3946-\t{\ndrivers/net/phy/marvell.c:3947:\t\t.phy_id = MARVELL_PHY_ID_88E1510,\ndrivers/net/phy/marvell.c-3948-\t\t.phy_id_mask = MARVELL_PHY_ID_MASK,\n--\ndrivers/net/phy/marvell.c=4208=static const struct mdio_device_id __maybe_unused marvell_tbl[] = {\n--\ndrivers/net/phy/marvell.c-4220-\t{ MARVELL_PHY_ID_88E1116R, MARVELL_PHY_ID_MASK },\ndrivers/net/phy/marvell.c:4221:\t{ MARVELL_PHY_ID_88E1510, MARVELL_PHY_ID_MASK },\ndrivers/net/phy/marvell.c-4222-\t{ MARVELL_PHY_ID_88E1540, MARVELL_PHY_ID_MASK },\n--\ninclude/linux/marvell_phy.h-20-#define MARVELL_PHY_ID_88E1116R\t\t0x01410e40\ninclude/linux/marvell_phy.h:21:#define MARVELL_PHY_ID_88E1510\t\t0x01410dd0\ninclude/linux/marvell_phy.h-22-#define MARVELL_PHY_ID_88E1540\t\t0x01410eb0\n"
}

gemini-3.8-flash

null

null

							input: 30451
							output: 39
							thoughts: 0
						

{
  "File": "drivers/net/phy/marvell.c",
  "FirstLine": 1965,
  "LineCount": 45
}

{
  "Contents": "1965:\t\tif (ret \u0026 MII_88E1318S_PHY_WOL_CTRL_LINK_UP_ENABLE)\n1966:\t\t\twol-\u003ewolopts |= WAKE_PHY;\n1967:\t}\n1968:\t\n1969:\tstatic int m88e1318_set_wol(struct phy_device *phydev,\n1970:\t\t\t\t    struct ethtool_wolinfo *wol)\n1971:\t{\n1972:\t\tint err = 0, oldpage;\n1973:\t\n1974:\t\toldpage = phy_save_page(phydev);\n1975:\t\tif (oldpage \u003c 0)\n1976:\t\t\tgoto error;\n1977:\t\n1978:\t\tif (wol-\u003ewolopts \u0026 (WAKE_MAGIC | WAKE_PHY)) {\n1979:\t\t\t/* Explicitly switch to page 0x00, just to be sure */\n1980:\t\t\terr = marvell_write_page(phydev, MII_MARVELL_COPPER_PAGE);\n1981:\t\t\tif (err \u003c 0)\n1982:\t\t\t\tgoto error;\n1983:\t\n1984:\t\t\t/* If WOL event happened once, the LED[2] interrupt pin\n1985:\t\t\t * will not be cleared unless we reading the interrupt status\n1986:\t\t\t * register. If interrupts are in use, the normal interrupt\n1987:\t\t\t * handling will clear the WOL event. Clear the WOL event\n1988:\t\t\t * before enabling it if !phy_interrupt_is_valid()\n1989:\t\t\t */\n1990:\t\t\tif (!phy_interrupt_is_valid(phydev))\n1991:\t\t\t\t__phy_read(phydev, MII_M1011_IEVENT);\n1992:\t\n1993:\t\t\t/* Enable the WOL interrupt */\n1994:\t\t\terr = __phy_set_bits(phydev, MII_88E1318S_PHY_CSIER,\n1995:\t\t\t\t\t     MII_88E1318S_PHY_CSIER_WOL_EIE);\n1996:\t\t\tif (err \u003c 0)\n1997:\t\t\t\tgoto error;\n1998:\t\n1999:\t\t\terr = marvell_write_page(phydev, MII_MARVELL_LED_PAGE);\n2000:\t\t\tif (err \u003c 0)\n2001:\t\t\t\tgoto error;\n2002:\t\n2003:\t\t\t/* Setup LED[2] as interrupt pin (active low) */\n2004:\t\t\terr = __phy_modify(phydev, MII_88E1318S_PHY_LED_TCR,\n2005:\t\t\t\t\t   MII_88E1318S_PHY_LED_TCR_FORCE_INT,\n2006:\t\t\t\t\t   MII_88E1318S_PHY_LED_TCR_INTn_ENABLE |\n2007:\t\t\t\t\t   MII_88E1318S_PHY_LED_TCR_INT_ACTIVE_LOW);\n2008:\t\t\tif (err \u003c 0)\n2009:\t\t\t\tgoto error;\n"
}

gemini-3.8-flash

null

null

							input: 31322
							output: 39
							thoughts: 0
						

{
  "File": "drivers/net/phy/marvell.c",
  "FirstLine": 2065,
  "LineCount": 50
}

{
  "Contents": "2065:\t\t\terr = marvell_write_page(phydev, MII_MARVELL_WOL_PAGE);\n2066:\t\t\tif (err \u003c 0)\n2067:\t\t\t\tgoto error;\n2068:\t\n2069:\t\t\t/* Clear WOL status and disable link up event */\n2070:\t\t\terr = __phy_modify(phydev, MII_88E1318S_PHY_WOL_CTRL,\n2071:\t\t\t\t\t   MII_88E1318S_PHY_WOL_CTRL_LINK_UP_ENABLE,\n2072:\t\t\t\t\t   MII_88E1318S_PHY_WOL_CTRL_CLEAR_WOL_STATUS);\n2073:\t\t\tif (err \u003c 0)\n2074:\t\t\t\tgoto error;\n2075:\t\t}\n2076:\t\n2077:\t\tif (!(wol-\u003ewolopts \u0026 (WAKE_MAGIC | WAKE_PHY))) {\n2078:\t\t\t/* Fully disabled: undo the WoL interrupt setup done above,\n2079:\t\t\t * so a later re-enable starts from a clean state.\n2080:\t\t\t */\n2081:\t\t\terr = marvell_write_page(phydev, MII_MARVELL_COPPER_PAGE);\n2082:\t\t\tif (err \u003c 0)\n2083:\t\t\t\tgoto error;\n2084:\t\n2085:\t\t\terr = __phy_clear_bits(phydev, MII_88E1318S_PHY_CSIER,\n2086:\t\t\t\t\t       MII_88E1318S_PHY_CSIER_WOL_EIE);\n2087:\t\t\tif (err \u003c 0)\n2088:\t\t\t\tgoto error;\n2089:\t\n2090:\t\t\terr = marvell_write_page(phydev, MII_MARVELL_LED_PAGE);\n2091:\t\t\tif (err \u003c 0)\n2092:\t\t\t\tgoto error;\n2093:\t\n2094:\t\t\terr = __phy_modify(phydev, MII_88E1318S_PHY_LED_TCR,\n2095:\t\t\t\t\t   MII_88E1318S_PHY_LED_TCR_FORCE_INT |\n2096:\t\t\t\t\t   MII_88E1318S_PHY_LED_TCR_INTn_ENABLE |\n2097:\t\t\t\t\t   MII_88E1318S_PHY_LED_TCR_INT_ACTIVE_LOW,\n2098:\t\t\t\t\t   phy_interrupt_is_valid(phydev) ?\n2099:\t\t\t\t\t\tMII_88E1318S_PHY_LED_TCR_INTn_ENABLE |\n2100:\t\t\t\t\t\tMII_88E1318S_PHY_LED_TCR_INT_ACTIVE_LOW :\n2101:\t\t\t\t\t\t0);\n2102:\t\t\tif (err \u003c 0)\n2103:\t\t\t\tgoto error;\n2104:\t\t}\n2105:\t\n2106:\terror:\n2107:\t\treturn phy_restore_page(phydev, oldpage, err);\n2108:\t}\n2109:\t\n2110:\tstatic int marvell_get_sset_count(struct phy_device *phydev)\n2111:\t{\n2112:\t\tif (linkmode_test_bit(ETHTOOL_LINK_MODE_FIBRE_BIT,\n2113:\t\t\t\t      phydev-\u003esupported))\n2114:\t\t\treturn ARRAY_SIZE(marvell_hw_stats);\n"
}

gemini-3.8-flash

null

null

							input: 32293
							output: 26
							thoughts: 0
						

no matches

{
  "Expression": "mdio.*mock",
  "PathPrefix": "drivers/"
}

{
  "error": "no matches"
}

gemini-3.8-flash

null

null

							input: 32333
							output: 26
							thoughts: 0
						

no matches

{
  "Expression": "mdio.*dummy",
  "PathPrefix": "drivers/"
}

{
  "error": "no matches"
}

gemini-3.8-flash

null

null

							input: 32373
							output: 26
							thoughts: 0
						

no matches

{
  "Expression": "mdio.*virtual",
  "PathPrefix": "drivers/"
}

{
  "error": "no matches"
}

gemini-3.8-flash

null

null

							input: 32413
							output: 27
							thoughts: 0
						

{
  "Expression": "mdio.*loopback",
  "PathPrefix": "drivers/"
}

{
  "Output": "drivers/net/mdio.c=83=EXPORT_SYMBOL(mdio_set_flag);\n--\ndrivers/net/mdio.c-90- * Returns 1 if the PHY reports link status up/OK, 0 otherwise.\ndrivers/net/mdio.c:91: * @mmd_mask is normally @mdio-\u003emmds, but if loopback is enabled\ndrivers/net/mdio.c-92- * the MMDs being bypassed should be excluded from the mask.\n"
}

gemini-3.8-flash

null

null

							input: 32570
							output: 29
							thoughts: 0
						

{
  "Expression": "mdiobus_register",
  "PathPrefix": "drivers/net/"
}

{
  "Output": "\nFull output is too long, showing 500 out of 1018 lines.\nUse more precise expression if possible.\n\ndrivers/net/dsa/bcm_sf2.c=607=static int bcm_sf2_mdio_register(struct dsa_switch *ds)\n--\ndrivers/net/dsa/bcm_sf2.c-683-\ndrivers/net/dsa/bcm_sf2.c:684:\terr = mdiobus_register(priv-\u003euser_mii_bus);\ndrivers/net/dsa/bcm_sf2.c-685-\tif (err)\n--\ndrivers/net/dsa/lantiq/lantiq_gswip_common.c=187=static int gswip_mdio(struct gswip_priv *priv)\n--\ndrivers/net/dsa/lantiq/lantiq_gswip_common.c-213-\ndrivers/net/dsa/lantiq/lantiq_gswip_common.c:214:\terr = devm_of_mdiobus_register(dev, bus, mdio_np);\ndrivers/net/dsa/lantiq/lantiq_gswip_common.c-215-\n--\ndrivers/net/dsa/microchip/ksz9477.c=321=static int ksz9477_pcs_create(struct ksz_device *dev)\n--\ndrivers/net/dsa/microchip/ksz9477.c-341-\ndrivers/net/dsa/microchip/ksz9477.c:342:\tret = devm_mdiobus_register(dev-\u003edev, bus);\ndrivers/net/dsa/microchip/ksz9477.c-343-\tif (ret)\n--\ndrivers/net/dsa/microchip/ksz_common.c=2356=int ksz_mdio_register(struct ksz_device *dev)\n--\ndrivers/net/dsa/microchip/ksz_common.c-2427-\ndrivers/net/dsa/microchip/ksz_common.c:2428:\tret = devm_of_mdiobus_register(ds-\u003edev, bus, mdio_np);\ndrivers/net/dsa/microchip/ksz_common.c-2429-\tif (ret) {\n--\ndrivers/net/dsa/microchip/lan937x_main.c=685=static int lan937x_mdio_register(struct ksz_device *dev)\n--\ndrivers/net/dsa/microchip/lan937x_main.c-755-\ndrivers/net/dsa/microchip/lan937x_main.c:756:\tret = devm_of_mdiobus_register(ds-\u003edev, bus, mdio_np);\ndrivers/net/dsa/microchip/lan937x_main.c-757-\tif (ret)\n--\ndrivers/net/dsa/motorcomm/chip.c=389=yt921x_mbus_int_init(struct yt921x_priv *priv, struct device_node *mnp)\n--\ndrivers/net/dsa/motorcomm/chip.c-406-\ndrivers/net/dsa/motorcomm/chip.c:407:\tres = devm_of_mdiobus_register(dev, mbus, mnp);\ndrivers/net/dsa/motorcomm/chip.c-408-\tif (res)\n--\ndrivers/net/dsa/motorcomm/chip.c=520=yt921x_mbus_ext_init(struct yt921x_priv *priv, struct device_node *mnp)\n--\ndrivers/net/dsa/motorcomm/chip.c-537-\ndrivers/net/dsa/motorcomm/chip.c:538:\tres = devm_of_mdiobus_register(dev, mbus, mnp);\ndrivers/net/dsa/motorcomm/chip.c-539-\tif (res)\n--\ndrivers/net/dsa/mt7530.c=2337=mt7530_setup_mdio(struct mt7530_priv *priv)\n--\ndrivers/net/dsa/mt7530.c-2372-\ndrivers/net/dsa/mt7530.c:2373:\tret = devm_of_mdiobus_register(dev, bus, mnp);\ndrivers/net/dsa/mt7530.c-2374-\tif (ret) {\n--\ndrivers/net/dsa/mt7628.c=242=static int mt7628_setup_internal_mdio(struct dsa_switch *ds)\n--\ndrivers/net/dsa/mt7628.c-261-\ndrivers/net/dsa/mt7628.c:262:\treturn devm_mdiobus_register(dev, bus);\ndrivers/net/dsa/mt7628.c-263-}\n--\ndrivers/net/dsa/mv88e6xxx/chip.c=3842=static int mv88e6xxx_mdio_register(struct mv88e6xxx_chip *chip,\n--\ndrivers/net/dsa/mv88e6xxx/chip.c-3895-\ndrivers/net/dsa/mv88e6xxx/chip.c:3896:\terr = of_mdiobus_register(bus, np);\ndrivers/net/dsa/mv88e6xxx/chip.c-3897-\tif (err) {\n--\ndrivers/net/dsa/mxl862xx/mxl862xx.c=267=static int mxl862xx_setup_mdio(struct dsa_switch *ds)\n--\ndrivers/net/dsa/mxl862xx/mxl862xx.c-292-\ndrivers/net/dsa/mxl862xx/mxl862xx.c:293:\tret = devm_of_mdiobus_register(dev, bus, mdio_np);\ndrivers/net/dsa/mxl862xx/mxl862xx.c-294-\tof_node_put(mdio_np);\n--\ndrivers/net/dsa/netc/netc_main.c=149=static int netc_port_create_emdio_bus(struct netc_port *np,\n--\ndrivers/net/dsa/netc/netc_main.c-179-\ndrivers/net/dsa/netc/netc_main.c:180:\terr = devm_of_mdiobus_register(dev, bus, node);\ndrivers/net/dsa/netc/netc_main.c-181-\tif (err)\n--\ndrivers/net/dsa/ocelot/felix_vsc9959.c=957=static int vsc9959_mdio_bus_alloc(struct ocelot *ocelot)\n--\ndrivers/net/dsa/ocelot/felix_vsc9959.c-1013-\t/* Needed in order to initialize the bus mutex lock */\ndrivers/net/dsa/ocelot/felix_vsc9959.c:1014:\trc = mdiobus_register(bus);\ndrivers/net/dsa/ocelot/felix_vsc9959.c-1015-\tif (rc \u003c 0) {\n--\ndrivers/net/dsa/ocelot/seville_vsc9953.c=878=static int vsc9953_mdio_bus_alloc(struct ocelot *ocelot)\n--\ndrivers/net/dsa/ocelot/seville_vsc9953.c-903-\t/* Needed in order to initialize the bus mutex lock */\ndrivers/net/dsa/ocelot/seville_vsc9953.c:904:\trc = devm_of_mdiobus_register(dev, bus, NULL);\ndrivers/net/dsa/ocelot/seville_vsc9953.c-905-\tif (rc \u003c 0) {\n--\ndrivers/net/dsa/qca/ar9331.c=357=static int ar9331_sw_mbus_init(struct ar9331_sw_priv *priv)\n--\ndrivers/net/dsa/qca/ar9331.c-381-\ndrivers/net/dsa/qca/ar9331.c:382:\tret = devm_of_mdiobus_register(dev, mbus, mnp);\ndrivers/net/dsa/qca/ar9331.c-383-\tof_node_put(mnp);\n--\ndrivers/net/dsa/qca/qca8k-8xxx.c=947=qca8k_mdio_register(struct qca8k_priv *priv)\n--\ndrivers/net/dsa/qca/qca8k-8xxx.c-986-\ndrivers/net/dsa/qca/qca8k-8xxx.c:987:\tret = devm_of_mdiobus_register(dev, bus, mdio);\ndrivers/net/dsa/qca/qca8k-8xxx.c-988-\n--\ndrivers/net/dsa/realtek/rtl83xx.c=75=int rtl83xx_setup_user_mdio(struct dsa_switch *ds)\n--\ndrivers/net/dsa/realtek/rtl83xx.c-100-\ndrivers/net/dsa/realtek/rtl83xx.c:101:\tret = devm_of_mdiobus_register(priv-\u003edev, bus, mdio_np);\ndrivers/net/dsa/realtek/rtl83xx.c-102-\tif (ret) {\n--\ndrivers/net/dsa/rzn1_a5psw.c=1117=static int a5psw_probe_mdio(struct a5psw *a5psw, struct device_node *node)\n--\ndrivers/net/dsa/rzn1_a5psw.c-1143-\ndrivers/net/dsa/rzn1_a5psw.c:1144:\treturn devm_of_mdiobus_register(dev, bus, node);\ndrivers/net/dsa/rzn1_a5psw.c-1145-}\n--\ndrivers/net/dsa/sja1105/sja1105.h=307=void sja1105_frame_memory_partitioning(struct sja1105_private *priv);\n--\ndrivers/net/dsa/sja1105/sja1105.h-309-/* From sja1105_mdio.c */\ndrivers/net/dsa/sja1105/sja1105.h:310:int sja1105_mdiobus_register(struct dsa_switch *ds);\ndrivers/net/dsa/sja1105/sja1105.h-311-void sja1105_mdiobus_unregister(struct dsa_switch *ds);\n--\ndrivers/net/dsa/sja1105/sja1105_main.c=3026=static int sja1105_setup(struct dsa_switch *ds)\n--\ndrivers/net/dsa/sja1105/sja1105_main.c-3067-\ndrivers/net/dsa/sja1105/sja1105_main.c:3068:\trc = sja1105_mdiobus_register(ds);\ndrivers/net/dsa/sja1105/sja1105_main.c-3069-\tif (rc \u003c 0) {\n--\ndrivers/net/dsa/sja1105/sja1105_mdio.c=258=static int sja1105_mdiobus_base_tx_register(struct sja1105_private *priv,\n--\ndrivers/net/dsa/sja1105/sja1105_mdio.c-287-\ndrivers/net/dsa/sja1105/sja1105_mdio.c:288:\trc = of_mdiobus_register(bus, np);\ndrivers/net/dsa/sja1105/sja1105_mdio.c-289-\tif (rc) {\n--\ndrivers/net/dsa/sja1105/sja1105_mdio.c=312=static int sja1105_mdiobus_base_t1_register(struct sja1105_private *priv,\n--\ndrivers/net/dsa/sja1105/sja1105_mdio.c-343-\ndrivers/net/dsa/sja1105/sja1105_mdio.c:344:\trc = of_mdiobus_register(bus, np);\ndrivers/net/dsa/sja1105/sja1105_mdio.c-345-\tif (rc) {\n--\ndrivers/net/dsa/sja1105/sja1105_mdio.c=368=static int sja1105_mdiobus_pcs_register(struct sja1105_private *priv)\n--\ndrivers/net/dsa/sja1105/sja1105_mdio.c-395-\ndrivers/net/dsa/sja1105/sja1105_mdio.c:396:\trc = mdiobus_register(bus);\ndrivers/net/dsa/sja1105/sja1105_mdio.c-397-\tif (rc) {\n--\ndrivers/net/dsa/sja1105/sja1105_mdio.c=439=static void sja1105_mdiobus_pcs_unregister(struct sja1105_private *priv)\n--\ndrivers/net/dsa/sja1105/sja1105_mdio.c-458-\ndrivers/net/dsa/sja1105/sja1105_mdio.c:459:int sja1105_mdiobus_register(struct dsa_switch *ds)\ndrivers/net/dsa/sja1105/sja1105_mdio.c-460-{\n--\ndrivers/net/ethernet/8390/ax88796.c=459=static int ax_mii_init(struct net_device *dev)\n--\ndrivers/net/ethernet/8390/ax88796.c-478-\ndrivers/net/ethernet/8390/ax88796.c:479:\terr = mdiobus_register(ax-\u003emii_bus);\ndrivers/net/ethernet/8390/ax88796.c-480-\tif (err)\n--\ndrivers/net/ethernet/actions/owl-emac.c=1321=static int owl_emac_mdio_init(struct net_device *netdev)\n--\ndrivers/net/ethernet/actions/owl-emac.c-1345-\ndrivers/net/ethernet/actions/owl-emac.c:1346:\tret = devm_of_mdiobus_register(dev, priv-\u003emii, mdio_node);\ndrivers/net/ethernet/actions/owl-emac.c-1347-\n--\ndrivers/net/ethernet/adi/adin1110.c=509=static int adin1110_register_mdiobus(struct adin1110_priv *priv,\n--\ndrivers/net/ethernet/adi/adin1110.c-529-\ndrivers/net/ethernet/adi/adin1110.c:530:\tret = devm_mdiobus_register(dev, mii_bus);\ndrivers/net/ethernet/adi/adin1110.c-531-\tif (ret)\n--\ndrivers/net/ethernet/adi/adin1140.c=617=static int adin1140_mdio_register(struct adin1140_priv *priv,\n--\ndrivers/net/ethernet/adi/adin1140.c-636-\ndrivers/net/ethernet/adi/adin1140.c:637:\treturn devm_mdiobus_register(\u0026spidev-\u003edev, priv-\u003emdiobus);\ndrivers/net/ethernet/adi/adin1140.c-638-}\n--\ndrivers/net/ethernet/aeroflex/greth.c=1290=static int greth_mdio_init(struct greth_private *greth)\n--\ndrivers/net/ethernet/aeroflex/greth.c-1306-\ndrivers/net/ethernet/aeroflex/greth.c:1307:\tret = mdiobus_register(greth-\u003emdio);\ndrivers/net/ethernet/aeroflex/greth.c-1308-\tif (ret) {\n--\ndrivers/net/ethernet/agere/et131x.c=3931=static int et131x_pci_setup(struct pci_dev *pdev,\n--\ndrivers/net/ethernet/agere/et131x.c-4026-\ndrivers/net/ethernet/agere/et131x.c:4027:\trc = mdiobus_register(adapter-\u003emii_bus);\ndrivers/net/ethernet/agere/et131x.c-4028-\tif (rc \u003c 0) {\n--\ndrivers/net/ethernet/altera/altera_tse_main.c=121=static int altera_tse_mdio_create(struct net_device *dev, unsigned int id)\n--\ndrivers/net/ethernet/altera/altera_tse_main.c-157-\ndrivers/net/ethernet/altera/altera_tse_main.c:158:\tret = of_mdiobus_register(mdio, mdio_node);\ndrivers/net/ethernet/altera/altera_tse_main.c-159-\tif (ret != 0) {\n--\ndrivers/net/ethernet/amd/au1000_eth.c=1061=static int au1000_probe(struct platform_device *pdev)\n--\ndrivers/net/ethernet/amd/au1000_eth.c-1221-\ndrivers/net/ethernet/amd/au1000_eth.c:1222:\terr = mdiobus_register(aup-\u003emii_bus);\ndrivers/net/ethernet/amd/au1000_eth.c-1223-\tif (err) {\n--\ndrivers/net/ethernet/amd/xgbe/xgbe-phy-v2.c=3428=static int xgbe_phy_init(struct xgbe_prv_data *pdata)\n--\ndrivers/net/ethernet/amd/xgbe/xgbe-phy-v2.c-3717-\tsnprintf(mii-\u003eid, sizeof(mii-\u003eid), \"%s\", dev_name(pdata-\u003edev));\ndrivers/net/ethernet/amd/xgbe/xgbe-phy-v2.c:3718:\tret = mdiobus_register(mii);\ndrivers/net/ethernet/amd/xgbe/xgbe-phy-v2.c-3719-\tif (ret) {\ndrivers/net/ethernet/amd/xgbe/xgbe-phy-v2.c:3720:\t\tdev_err(pdata-\u003edev, \"mdiobus_register failed\\n\");\ndrivers/net/ethernet/amd/xgbe/xgbe-phy-v2.c-3721-\t\treturn ret;\n--\ndrivers/net/ethernet/apm/xgene-v2/mdio.c=98=int xge_mdio_config(struct net_device *ndev)\n--\ndrivers/net/ethernet/apm/xgene-v2/mdio.c-118-\tmdio_bus-\u003ephy_mask = 0x1;\ndrivers/net/ethernet/apm/xgene-v2/mdio.c:119:\tret = mdiobus_register(mdio_bus);\ndrivers/net/ethernet/apm/xgene-v2/mdio.c-120-\tif (ret)\n--\ndrivers/net/ethernet/apm/xgene/xgene_enet_hw.c=837=int xgene_enet_phy_connect(struct net_device *ndev)\n--\ndrivers/net/ethernet/apm/xgene/xgene_enet_hw.c-887-\ndrivers/net/ethernet/apm/xgene/xgene_enet_hw.c:888:static int xgene_mdiobus_register(struct xgene_enet_pdata *pdata,\ndrivers/net/ethernet/apm/xgene/xgene_enet_hw.c-889-\t\t\t\t  struct mii_bus *mdio)\n--\ndrivers/net/ethernet/apm/xgene/xgene_enet_hw.c-912-\ndrivers/net/ethernet/apm/xgene/xgene_enet_hw.c:913:\t\tret = of_mdiobus_register(mdio, mdio_np);\ndrivers/net/ethernet/apm/xgene/xgene_enet_hw.c-914-\t\tof_node_put(mdio_np);\n--\ndrivers/net/ethernet/apm/xgene/xgene_enet_hw.c-921-\t/* Register the MDIO bus */\ndrivers/net/ethernet/apm/xgene/xgene_enet_hw.c:922:\tret = mdiobus_register(mdio);\ndrivers/net/ethernet/apm/xgene/xgene_enet_hw.c-923-\tif (ret)\n--\ndrivers/net/ethernet/apm/xgene/xgene_enet_hw.c=939=int xgene_enet_mdio_config(struct xgene_enet_pdata *pdata)\n--\ndrivers/net/ethernet/apm/xgene/xgene_enet_hw.c-957-\ndrivers/net/ethernet/apm/xgene/xgene_enet_hw.c:958:\tret = xgene_mdiobus_register(pdata, mdio_bus);\ndrivers/net/ethernet/apm/xgene/xgene_enet_hw.c-959-\tif (ret) {\n--\ndrivers/net/ethernet/arc/emac_mdio.c=131=int arc_mdio_probe(struct arc_emac_priv *priv)\n--\ndrivers/net/ethernet/arc/emac_mdio.c-172-\ndrivers/net/ethernet/arc/emac_mdio.c:173:\terror = of_mdiobus_register(bus, mdio_node);\ndrivers/net/ethernet/arc/emac_mdio.c-174-\tof_node_put(mdio_node);\n--\ndrivers/net/ethernet/asix/ax88796c_main.c=966=static int ax88796c_probe(struct spi_device *spi)\n--\ndrivers/net/ethernet/asix/ax88796c_main.c-1010-\ndrivers/net/ethernet/asix/ax88796c_main.c:1011:\tret = devm_mdiobus_register(\u0026spi-\u003edev, ax_local-\u003emdiobus);\ndrivers/net/ethernet/asix/ax88796c_main.c-1012-\tif (ret \u003c 0) {\n--\ndrivers/net/ethernet/atheros/ag71xx.c=687=static int ag71xx_mdio_probe(struct ag71xx *ag)\n--\ndrivers/net/ethernet/atheros/ag71xx.c-727-\tmnp = of_get_child_by_name(np, \"mdio\");\ndrivers/net/ethernet/atheros/ag71xx.c:728:\terr = devm_of_mdiobus_register(dev, mii_bus, mnp);\ndrivers/net/ethernet/atheros/ag71xx.c-729-\tof_node_put(mnp);\n--\ndrivers/net/ethernet/broadcom/b44.c=2234=static int b44_register_phy_one(struct b44 *bp)\n--\ndrivers/net/ethernet/broadcom/b44.c-2259-\ndrivers/net/ethernet/broadcom/b44.c:2260:\terr = mdiobus_register(mii_bus);\ndrivers/net/ethernet/broadcom/b44.c-2261-\tif (err) {\n--\ndrivers/net/ethernet/broadcom/bcm63xx_enet.c=1713=static int bcm_enet_probe(struct platform_device *pdev)\n--\ndrivers/net/ethernet/broadcom/bcm63xx_enet.c-1829-\ndrivers/net/ethernet/broadcom/bcm63xx_enet.c:1830:\t\tret = mdiobus_register(bus);\ndrivers/net/ethernet/broadcom/bcm63xx_enet.c-1831-\t\tif (ret) {\n--\ndrivers/net/ethernet/broadcom/bgmac-bcma-mdio.c=211=struct mii_bus *bcma_mdio_mii_register(struct bgmac *bgmac)\n--\ndrivers/net/ethernet/broadcom/bgmac-bcma-mdio.c-235-\ndrivers/net/ethernet/broadcom/bgmac-bcma-mdio.c:236:\terr = of_mdiobus_register(mii_bus, np);\ndrivers/net/ethernet/broadcom/bgmac-bcma-mdio.c-237-\tof_node_put(np);\n--\ndrivers/net/ethernet/broadcom/genet/bcmmii.c=193=int bcmgenet_mii_config(struct net_device *dev, bool init)\n--\ndrivers/net/ethernet/broadcom/genet/bcmmii.c-233-\t\tphy_name = \"external RvMII\";\ndrivers/net/ethernet/broadcom/genet/bcmmii.c:234:\t\t/* of_mdiobus_register took care of reading the 'max-speed'\ndrivers/net/ethernet/broadcom/genet/bcmmii.c-235-\t\t * PHY property for us, effectively limiting the PHY supported\n--\ndrivers/net/ethernet/broadcom/sb1250-mac.c=2157=static int sbmac_init(struct platform_device *pldev, long long base)\n--\ndrivers/net/ethernet/broadcom/sb1250-mac.c-2227-\t */\ndrivers/net/ethernet/broadcom/sb1250-mac.c:2228:\terr = mdiobus_register(sc-\u003emii_bus);\ndrivers/net/ethernet/broadcom/sb1250-mac.c-2229-\tif (err) {\n--\ndrivers/net/ethernet/broadcom/tg3.c=1505=static int tg3_mdio_init(struct tg3 *tp)\n--\ndrivers/net/ethernet/broadcom/tg3.c-1557-\ndrivers/net/ethernet/broadcom/tg3.c:1558:\ti = mdiobus_register(tp-\u003emdio_bus);\ndrivers/net/ethernet/broadcom/tg3.c-1559-\tif (i) {\n--\ndrivers/net/ethernet/cadence/macb_main.c=1023=static int macb_mii_probe(struct net_device *netdev)\n--\ndrivers/net/ethernet/cadence/macb_main.c-1096-\ndrivers/net/ethernet/cadence/macb_main.c:1097:static int macb_mdiobus_register(struct macb *bp, struct device_node *mdio_np)\ndrivers/net/ethernet/cadence/macb_main.c-1098-{\n--\ndrivers/net/ethernet/cadence/macb_main.c-1104-\tif (mdio_np)\ndrivers/net/ethernet/cadence/macb_main.c:1105:\t\treturn of_mdiobus_register(bp-\u003emii_bus, mdio_np);\ndrivers/net/ethernet/cadence/macb_main.c-1106-\n--\ndrivers/net/ethernet/cadence/macb_main.c-1118-\ndrivers/net/ethernet/cadence/macb_main.c:1119:\t\t\treturn of_mdiobus_register(bp-\u003emii_bus, np);\ndrivers/net/ethernet/cadence/macb_main.c-1120-\t\t}\ndrivers/net/ethernet/cadence/macb_main.c-1121-\ndrivers/net/ethernet/cadence/macb_main.c:1122:\treturn mdiobus_register(bp-\u003emii_bus);\ndrivers/net/ethernet/cadence/macb_main.c-1123-}\n--\ndrivers/net/ethernet/cadence/macb_main.c=1125=static int macb_mii_init(struct macb *bp)\n--\ndrivers/net/ethernet/cadence/macb_main.c-1158-\ndrivers/net/ethernet/cadence/macb_main.c:1159:\terr = macb_mdiobus_register(bp, mdio_np);\ndrivers/net/ethernet/cadence/macb_main.c-1160-\tif (err)\n--\ndrivers/net/ethernet/davicom/dm9051.c=1107=static int dm9051_mdio_register(struct board_info *db)\n--\ndrivers/net/ethernet/davicom/dm9051.c-1124-\ndrivers/net/ethernet/davicom/dm9051.c:1125:\tret = devm_mdiobus_register(\u0026spi-\u003edev, db-\u003emdiobus);\ndrivers/net/ethernet/davicom/dm9051.c-1126-\tif (ret)\n--\ndrivers/net/ethernet/engleder/tsnep_main.c=2423=static int tsnep_mdio_init(struct tsnep_adapter *adapter)\n--\ndrivers/net/ethernet/engleder/tsnep_main.c-2454-\ndrivers/net/ethernet/engleder/tsnep_main.c:2455:\tretval = of_mdiobus_register(adapter-\u003emdiobus, np);\ndrivers/net/ethernet/engleder/tsnep_main.c-2456-\n--\ndrivers/net/ethernet/ethoc.c=1024=static int ethoc_probe(struct platform_device *pdev)\n--\ndrivers/net/ethernet/ethoc.c-1207-\ndrivers/net/ethernet/ethoc.c:1208:\tret = mdiobus_register(priv-\u003emdio);\ndrivers/net/ethernet/ethoc.c-1209-\tif (ret) {\n--\ndrivers/net/ethernet/faraday/ftgmac100.c=1734=static int ftgmac100_setup_mdio(struct net_device *netdev)\n--\ndrivers/net/ethernet/faraday/ftgmac100.c-1769-\ndrivers/net/ethernet/faraday/ftgmac100.c:1770:\terr = devm_of_mdiobus_register(priv-\u003edev, priv-\u003emii_bus, mdio_np);\ndrivers/net/ethernet/faraday/ftgmac100.c-1771-\tof_node_put(mdio_np);\n--\ndrivers/net/ethernet/freescale/enetc/enetc_pci_mdio.c=36=static int enetc_pci_mdio_probe(struct pci_dev *pdev,\n--\ndrivers/net/ethernet/freescale/enetc/enetc_pci_mdio.c-90-\ndrivers/net/ethernet/freescale/enetc/enetc_pci_mdio.c:91:\terr = of_mdiobus_register(bus, dev-\u003eof_node);\ndrivers/net/ethernet/freescale/enetc/enetc_pci_mdio.c-92-\tif (err)\n--\ndrivers/net/ethernet/freescale/enetc/enetc_pf_common.c=266=static int enetc_mdio_probe(struct enetc_pf *pf, struct device_node *np)\n--\ndrivers/net/ethernet/freescale/enetc/enetc_pf_common.c-292-\ndrivers/net/ethernet/freescale/enetc/enetc_pf_common.c:293:\terr = of_mdiobus_register(bus, np);\ndrivers/net/ethernet/freescale/enetc/enetc_pf_common.c-294-\tif (err)\n--\ndrivers/net/ethernet/freescale/enetc/enetc_pf_common.c=308=static int enetc_imdio_create(struct enetc_pf *pf)\n--\ndrivers/net/ethernet/freescale/enetc/enetc_pf_common.c-342-\ndrivers/net/ethernet/freescale/enetc/enetc_pf_common.c:343:\terr = mdiobus_register(bus);\ndrivers/net/ethernet/freescale/enetc/enetc_pf_common.c-344-\tif (err) {\n--\ndrivers/net/ethernet/freescale/fec_main.c=3042=static int fec_enet_mii_init(struct platform_device *pdev)\n--\ndrivers/net/ethernet/freescale/fec_main.c-3160-\ndrivers/net/ethernet/freescale/fec_main.c:3161:\terr = of_mdiobus_register(fep-\u003emii_bus, node);\ndrivers/net/ethernet/freescale/fec_main.c-3162-\tif (err)\n--\ndrivers/net/ethernet/freescale/fec_mpc52xx_phy.c=65=static int mpc52xx_fec_mdio_probe(struct platform_device *of)\n--\ndrivers/net/ethernet/freescale/fec_mpc52xx_phy.c-105-\ndrivers/net/ethernet/freescale/fec_mpc52xx_phy.c:106:\terr = of_mdiobus_register(bus, np);\ndrivers/net/ethernet/freescale/fec_mpc52xx_phy.c-107-\tif (err)\n--\ndrivers/net/ethernet/freescale/fs_enet/mii-bitbang.c=149=static int fs_enet_mdio_probe(struct platform_device *ofdev)\n--\ndrivers/net/ethernet/freescale/fs_enet/mii-bitbang.c-175-\ndrivers/net/ethernet/freescale/fs_enet/mii-bitbang.c:176:\tret = of_mdiobus_register(new_bus, ofdev-\u003edev.of_node);\ndrivers/net/ethernet/freescale/fs_enet/mii-bitbang.c-177-\tif (ret)\n--\ndrivers/net/ethernet/freescale/fs_enet/mii-fec.c=97=static int fs_enet_mdio_probe(struct platform_device *ofdev)\n--\ndrivers/net/ethernet/freescale/fs_enet/mii-fec.c-166-\ndrivers/net/ethernet/freescale/fs_enet/mii-fec.c:167:\tret = of_mdiobus_register(new_bus, ofdev-\u003edev.of_node);\ndrivers/net/ethernet/freescale/fs_enet/mii-fec.c-168-\tif (ret)\n--\ndrivers/net/ethernet/freescale/fsl_pq_mdio.c=409=static int fsl_pq_mdio_probe(struct platform_device *pdev)\n--\ndrivers/net/ethernet/freescale/fsl_pq_mdio.c-493-\ndrivers/net/ethernet/freescale/fsl_pq_mdio.c:494:\terr = of_mdiobus_register(new_bus, np);\ndrivers/net/ethernet/freescale/fsl_pq_mdio.c-495-\tif (err) {\n--\ndrivers/net/ethernet/freescale/xgmac_mdio.c=371=static int xgmac_mdio_probe(struct platform_device *pdev)\n--\ndrivers/net/ethernet/freescale/xgmac_mdio.c-426-\tif (is_of_node(fwnode))\ndrivers/net/ethernet/freescale/xgmac_mdio.c:427:\t\tret = of_mdiobus_register(bus, to_of_node(fwnode));\ndrivers/net/ethernet/freescale/xgmac_mdio.c-428-\telse if (is_acpi_node(fwnode))\ndrivers/net/ethernet/freescale/xgmac_mdio.c:429:\t\tret = acpi_mdiobus_register(bus, fwnode);\ndrivers/net/ethernet/freescale/xgmac_mdio.c-430-\telse\n--\ndrivers/net/ethernet/hisilicon/hibmcge/hbg_mdio.c=266=int hbg_mdio_init(struct hbg_priv *priv)\n--\ndrivers/net/ethernet/hisilicon/hibmcge/hbg_mdio.c-291-\ndrivers/net/ethernet/hisilicon/hibmcge/hbg_mdio.c:292:\tret = devm_mdiobus_register(dev, mdio_bus);\ndrivers/net/ethernet/hisilicon/hibmcge/hbg_mdio.c-293-\tif (ret)\n--\ndrivers/net/ethernet/hisilicon/hix5hd2_gmac.c=1094=static int hix5hd2_dev_probe(struct platform_device *pdev)\n--\ndrivers/net/ethernet/hisilicon/hix5hd2_gmac.c-1185-\ndrivers/net/ethernet/hisilicon/hix5hd2_gmac.c:1186:\tret = of_mdiobus_register(bus, node);\ndrivers/net/ethernet/hisilicon/hix5hd2_gmac.c-1187-\tif (ret)\n--\ndrivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mdio.c=123=int hclge_mac_mdio_config(struct hclge_dev *hdev)\n--\ndrivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mdio.c-154-\tmdio_bus-\u003ephy_mask = ~(1U \u003c\u003c mac-\u003ephy_addr);\ndrivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mdio.c:155:\tret = mdiobus_register(mdio_bus);\ndrivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mdio.c-156-\tif (ret) {\n--\ndrivers/net/ethernet/hisilicon/hns_mdio.c=495=static int hns_mdio_probe(struct platform_device *pdev)\n--\ndrivers/net/ethernet/hisilicon/hns_mdio.c-583-\ndrivers/net/ethernet/hisilicon/hns_mdio.c:584:\t\tret = of_mdiobus_register(new_bus, pdev-\u003edev.of_node);\ndrivers/net/ethernet/hisilicon/hns_mdio.c-585-\t} else if (is_acpi_node(pdev-\u003edev.fwnode)) {\n--\ndrivers/net/ethernet/hisilicon/hns_mdio.c-592-\t\t/* Register the MDIO bus */\ndrivers/net/ethernet/hisilicon/hns_mdio.c:593:\t\tret = mdiobus_register(new_bus);\ndrivers/net/ethernet/hisilicon/hns_mdio.c-594-\t} else {\n--\ndrivers/net/ethernet/ibm/emac/core.c=2560=static int emac_dt_mdio_probe(struct emac_instance *dev)\n--\ndrivers/net/ethernet/ibm/emac/core.c-2584-\tsnprintf(bus-\u003eid, MII_BUS_ID_SIZE, \"%s\", dev-\u003eofdev-\u003ename);\ndrivers/net/ethernet/ibm/emac/core.c:2585:\tres = devm_of_mdiobus_register(\u0026dev-\u003eofdev-\u003edev, bus, mii_np);\ndrivers/net/ethernet/ibm/emac/core.c-2586-\tif (res) {\n--\ndrivers/net/ethernet/intel/ixgbe/ixgbe_phy.c=1026=int ixgbe_mii_bus_init(struct ixgbe_hw *hw)\n--\ndrivers/net/ethernet/intel/ixgbe/ixgbe_phy.c-1088-\tadapter-\u003emii_bus = bus;\ndrivers/net/ethernet/intel/ixgbe/ixgbe_phy.c:1089:\treturn mdiobus_register(bus);\ndrivers/net/ethernet/intel/ixgbe/ixgbe_phy.c-1090-}\n--\ndrivers/net/ethernet/lantiq_etop.c=385=ltq_etop_mdio_init(struct net_device *dev)\n--\ndrivers/net/ethernet/lantiq_etop.c-402-\t\t priv-\u003epdev-\u003ename, priv-\u003epdev-\u003eid);\ndrivers/net/ethernet/lantiq_etop.c:403:\tif (mdiobus_register(priv-\u003emii_bus)) {\ndrivers/net/ethernet/lantiq_etop.c-404-\t\terr = -ENXIO;\n--\ndrivers/net/ethernet/marvell/mvmdio.c=283=static int orion_mdio_probe(struct platform_device *pdev)\n--\ndrivers/net/ethernet/marvell/mvmdio.c-381-\t/* For the platforms not supporting DT/ACPI fall-back\ndrivers/net/ethernet/marvell/mvmdio.c:382:\t * to mdiobus_register via of_mdiobus_register.\ndrivers/net/ethernet/marvell/mvmdio.c-383-\t */\ndrivers/net/ethernet/marvell/mvmdio.c-384-\tif (is_acpi_node(pdev-\u003edev.fwnode))\ndrivers/net/ethernet/marvell/mvmdio.c:385:\t\tret = acpi_mdiobus_register(bus, pdev-\u003edev.fwnode);\ndrivers/net/ethernet/marvell/mvmdio.c-386-\telse\ndrivers/net/ethernet/marvell/mvmdio.c:387:\t\tret = of_mdiobus_register(bus, pdev-\u003edev.of_node);\ndrivers/net/ethernet/marvell/mvmdio.c-388-\tif (ret \u003c 0) {\n--\ndrivers/net/ethernet/marvell/pxa168_eth.c=1387=static int pxa168_eth_probe(struct platform_device *pdev)\n--\ndrivers/net/ethernet/marvell/pxa168_eth.c-1504-\tpep-\u003esmi_bus-\u003ephy_mask = 0xffffffff;\ndrivers/net/ethernet/marvell/pxa168_eth.c:1505:\terr = mdiobus_register(pep-\u003esmi_bus);\ndrivers/net/ethernet/marvell/pxa168_eth.c-1506-\tif (err)\n--\ndrivers/net/ethernet/mediatek/mtk_eth_soc.c=998=static int mtk_mdio_init(struct mtk_eth *eth)\n--\ndrivers/net/ethernet/mediatek/mtk_eth_soc.c-1037-\tdev_dbg(eth-\u003edev, \"MDC is running on %d Hz\\n\", MDC_MAX_FREQ / eth-\u003emdc_divider);\ndrivers/net/ethernet/mediatek/mtk_eth_soc.c:1038:\tret = of_mdiobus_register(eth-\u003emii_bus, mii_np);\ndrivers/net/ethernet/mediatek/mtk_eth_soc.c-1039-\n--\ndrivers/net/ethernet/mediatek/mtk_star_emac.c=1422=static int mtk_star_mdio_init(struct net_device *ndev)\n--\ndrivers/net/ethernet/mediatek/mtk_star_emac.c-1447-\ndrivers/net/ethernet/mediatek/mtk_star_emac.c:1448:\tret = devm_of_mdiobus_register(dev, priv-\u003emii, mdio_node);\ndrivers/net/ethernet/mediatek/mtk_star_emac.c-1449-\n--\ndrivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige_mdio.c=287=int mlxbf_gige_mdio_probe(struct platform_device *pdev, struct mlxbf_gige *priv)\n--\ndrivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige_mdio.c-332-\ndrivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige_mdio.c:333:\tret = mdiobus_register(priv-\u003emdiobus);\ndrivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige_mdio.c-334-\tif (ret)\n--\ndrivers/net/ethernet/meta/fbnic/fbnic_mdio.c=253=int fbnic_mdiobus_create(struct fbnic_dev *fbd)\n--\ndrivers/net/ethernet/meta/fbnic/fbnic_mdio.c-272-\ndrivers/net/ethernet/meta/fbnic/fbnic_mdio.c:273:\terr = devm_mdiobus_register(fbd-\u003edev, bus);\ndrivers/net/ethernet/meta/fbnic/fbnic_mdio.c-274-\tif (err) {\n--\ndrivers/net/ethernet/micrel/ks8851_common.c=1030=static int ks8851_register_mdiobus(struct ks8851_net *ks, struct device *dev)\n--\ndrivers/net/ethernet/micrel/ks8851_common.c-1046-\ndrivers/net/ethernet/micrel/ks8851_common.c:1047:\tret = mdiobus_register(mii_bus);\ndrivers/net/ethernet/micrel/ks8851_common.c-1048-\tif (ret)\ndrivers/net/ethernet/micrel/ks8851_common.c:1049:\t\tgoto err_mdiobus_register;\ndrivers/net/ethernet/micrel/ks8851_common.c-1050-\n--\ndrivers/net/ethernet/micrel/ks8851_common.c-1054-\ndrivers/net/ethernet/micrel/ks8851_common.c:1055:err_mdiobus_register:\ndrivers/net/ethernet/micrel/ks8851_common.c-1056-\tmdiobus_free(mii_bus);\n--\ndrivers/net/ethernet/microchip/lan743x_main.c=1379=static int lan743x_hw_reset_phy(struct lan743x_adapter *adapter)\n--\ndrivers/net/ethernet/microchip/lan743x_main.c-1382-\ndrivers/net/ethernet/microchip/lan743x_main.c:1383:\t/* Only called with in probe, and before mdiobus_register */\ndrivers/net/ethernet/microchip/lan743x_main.c-1384-\n--\ndrivers/net/ethernet/microchip/lan743x_main.c=3628=static int lan743x_mdiobus_init(struct lan743x_adapter *adapter)\n--\ndrivers/net/ethernet/microchip/lan743x_main.c-3671-\t/* register mdiobus */\ndrivers/net/ethernet/microchip/lan743x_main.c:3672:\tret = mdiobus_register(adapter-\u003emdiobus);\ndrivers/net/ethernet/microchip/lan743x_main.c-3673-\tif (ret \u003c 0)\n--\ndrivers/net/ethernet/ni/nixge.c=1212=static int nixge_mdio_setup(struct nixge_priv *priv, struct device_node *np)\n--\ndrivers/net/ethernet/ni/nixge.c-1230-\ndrivers/net/ethernet/ni/nixge.c:1231:\treturn of_mdiobus_register(bus, np);\ndrivers/net/ethernet/ni/nixge.c-1232-}\n--\n\n"
}

gemini-3.8-flash

null

null

							input: 45538
							output: 40
							thoughts: 885
						

**Assessing the Fuzzing Potential of the Marvell PHY Driver Patch**

Okay, let's break this down systematically. I need to determine if fuzzing this `m88e1318_set_wol` function on amd64 is even viable. The patch modifies `drivers/net/phy/marvell.c`, specifically within `m88e1318_set_wol`. The relevant code snippet disables WoL interrupts if they aren't enabled. No problem there, but the *real* question is, can I reach this code through fuzzing?

The instructions emphasize *reachability* as the critical factor. My fuzzing environment is standard: QEMU or GCE with software-emulated devices like netdev and tun/tap. So, the question becomes: can I exercise the `m88e1318_set_wol` function in this context? If the modified code is unreachable within this environment, there's no point in fuzzing it, regardless of any added assertions or logic.

The instructions specifically call out scenarios where hardware is structurally unreachable, such as vendor-specific PCIe switches, SmartNICs, or GPU drivers. Now, that triggers a thought: this is a PHY, and those often interact with the MDIO bus. Can I emulate that setup?

Could a USB gadget driver (e.g., USB raw-gadget or dummy_hcd) be used to emulate a USB NIC like an ASIX or LAN78xx or SMSC95xx, which in turn *might* present an MDIO bus? And *then* on that MDIO bus, could a Marvell 88E1318S or 88E1510 PHY be probed? That's the key. I need to understand if syzkaller, which I'll be using for fuzzing, is capable of such a setup. I need to see how USB NIC drivers work with MDIO buses.

Let's look at `asix_devices.c`. I need to inspect that file to see how those devices interface with the MDIO bus. Specifically, around `ax88772_init_mdio`. That might give me some clues as to whether I can build a test case to get the required set up. Okay, let's get to it.

{
  "File": "drivers/net/usb/asix_devices.c",
  "FirstLine": 669,
  "LineCount": 45
}

{
  "Contents": " 669:\tstatic int ax88772_init_mdio(struct usbnet *dev)\n 670:\t{\n 671:\t\tstruct asix_common_private *priv = dev-\u003edriver_priv;\n 672:\t\tint ret;\n 673:\t\n 674:\t\tpriv-\u003emdio = mdiobus_alloc();\n 675:\t\tif (!priv-\u003emdio)\n 676:\t\t\treturn -ENOMEM;\n 677:\t\n 678:\t\tpriv-\u003emdio-\u003epriv = dev;\n 679:\t\tpriv-\u003emdio-\u003eread = \u0026asix_mdio_bus_read;\n 680:\t\tpriv-\u003emdio-\u003ewrite = \u0026asix_mdio_bus_write;\n 681:\t\tpriv-\u003emdio-\u003ename = \"Asix MDIO Bus\";\n 682:\t\tpriv-\u003emdio-\u003ephy_mask = ~(BIT(priv-\u003ephy_addr \u0026 0x1f) | BIT(AX_EMBD_PHY_ADDR));\n 683:\t\t/* mii bus name is usb-\u003cusb bus number\u003e-\u003cusb device number\u003e */\n 684:\t\tsnprintf(priv-\u003emdio-\u003eid, MII_BUS_ID_SIZE, \"usb-%03d:%03d\",\n 685:\t\t\t dev-\u003eudev-\u003ebus-\u003ebusnum, dev-\u003eudev-\u003edevnum);\n 686:\t\n 687:\t\tret = mdiobus_register(priv-\u003emdio);\n 688:\t\tif (ret) {\n 689:\t\t\tnetdev_err(dev-\u003enet, \"Could not register MDIO bus (err %d)\\n\", ret);\n 690:\t\t\tmdiobus_free(priv-\u003emdio);\n 691:\t\t\tpriv-\u003emdio = NULL;\n 692:\t\t}\n 693:\t\n 694:\t\treturn ret;\n 695:\t}\n 696:\t\n 697:\tstatic void ax88772_mdio_unregister(struct asix_common_private *priv)\n 698:\t{\n 699:\t\tmdiobus_unregister(priv-\u003emdio);\n 700:\t\tmdiobus_free(priv-\u003emdio);\n 701:\t}\n 702:\t\n 703:\tstatic int ax88772_init_phy(struct usbnet *dev)\n 704:\t{\n 705:\t\tstruct asix_common_private *priv = dev-\u003edriver_priv;\n 706:\t\tint ret;\n 707:\t\n 708:\t\tpriv-\u003ephydev = mdiobus_get_phy(priv-\u003emdio, priv-\u003ephy_addr);\n 709:\t\tif (!priv-\u003ephydev) {\n 710:\t\t\tnetdev_err(dev-\u003enet, \"Could not find PHY\\n\");\n 711:\t\t\treturn -ENODEV;\n 712:\t\t}\n 713:\t\n"
}

gemini-3.8-flash

null

null

							input: 47721
							output: 31
							thoughts: 71
						

**Examining the ASIX Driver's Wake-on-LAN Capabilities**

Hold on a moment! I need to clarify something regarding the ASIX network device driver. Specifically, I'm thinking about the `asix_devices.c` file and its Wake-on-LAN functionality. I'm wondering if the ASIX driver correctly supports using `ethtool -s wol` to configure Wake-on-LAN, and if it's properly calling `phy_ethtool_set_wol`.

To confirm this, I should immediately shift my focus to either `drivers/net/usb/asix_common.c` or, again, `asix_devices.c`. I'll need to meticulously search within these files for the implementation of the `set_wol` function, as that's where this configuration would be handled. Knowing how the `set_wol` function is implemented will directly address my original question.

no matches

{
  "Expression": "set_wol",
  "PathPrefix": "drivers/net/usb/asix"
}

{
  "error": "no matches"
}

gemini-3.8-flash

null

null

							input: 48035
							output: 38
							thoughts: 14
						

Here's a summary of my thoughts, as though they were my own:

**Investigating `ax88172a.c`**

Okay, so I'm looking at `ax88172a.c`... what's going on in there? I know this driver, but I need to refresh my memory and pinpoint a specific area. I'm probably thinking about a specific problem I'm trying to solve, or maybe I'm starting a deeper dive into the architecture. Am I debugging a performance bottleneck in network transfers? Maybe I'm troubleshooting a specific hardware interaction issue? This is where the questions start: are there any known issues with that chip and how do I relate them to what is happening here? I'll probably start scanning the file for key functions, data structures, or potentially troublesome areas like interrupt handlers or DMA setups. I am trying to understand the driver's flow, paying close attention to how it interacts with the hardware registers. The goal is a mental map of this code.

{
  "Expression": "set_wol",
  "PathPrefix": "drivers/net/usb/ax88172a.c"
}

{
  "Output": "drivers/net/usb/ax88172a.c=116=static const struct ethtool_ops ax88172a_ethtool_ops = {\n--\ndrivers/net/usb/ax88172a.c-121-\t.get_wol\t\t= asix_get_wol,\ndrivers/net/usb/ax88172a.c:122:\t.set_wol\t\t= asix_set_wol,\ndrivers/net/usb/ax88172a.c-123-\t.get_eeprom_len\t\t= asix_get_eeprom_len,\n"
}

gemini-3.8-flash

null

null

							input: 48472
							output: 31
							thoughts: 23
						

Okay, let's dive into this. Here's how I'd approach this task, as if these were my internal thoughts:

**Analyzing the Function `asix_set_wol`**

Alright, time to get my hands dirty. Let's dig into the `asix_common.c` file and specifically examine what's going on within the `asix_set_wol` function. I need to understand its role within the larger framework. Is it responsible for configuring Wake-on-LAN functionality? If so, what parameters does it take, and what registers or hardware components does it interact with to achieve this? Knowing the intricacies of this function is vital for debugging or modifying ASIX-based network drivers or assessing its behavior, so I need to understand how it's implemented. Specifically, I want to understand what aspects of WoL are being configured by this function. Is it enabling/disabling WoL overall, setting up magic packet filtering, configuring pattern matching, or some combination of these? Understanding this will give me a better understanding of the low-level aspects.

{
  "Expression": "asix_set_wol",
  "PathPrefix": "drivers/net/usb"
}

{
  "Output": "drivers/net/usb/asix.h=241=void asix_get_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo);\ndrivers/net/usb/asix.h:242:int asix_set_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo);\ndrivers/net/usb/asix.h-243-\n--\ndrivers/net/usb/asix_common.c=574=void asix_get_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)\n--\ndrivers/net/usb/asix_common.c-592-\ndrivers/net/usb/asix_common.c:593:int asix_set_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)\ndrivers/net/usb/asix_common.c-594-{\n--\ndrivers/net/usb/asix_devices.c=103=static const struct ethtool_ops ax88172_ethtool_ops = {\n--\ndrivers/net/usb/asix_devices.c-108-\t.get_wol\t\t= asix_get_wol,\ndrivers/net/usb/asix_devices.c:109:\t.set_wol\t\t= asix_set_wol,\ndrivers/net/usb/asix_devices.c-110-\t.get_eeprom_len\t\t= asix_get_eeprom_len,\n--\ndrivers/net/usb/asix_devices.c=312=static const struct ethtool_ops ax88772_ethtool_ops = {\n--\ndrivers/net/usb/asix_devices.c-317-\t.get_wol\t\t= asix_get_wol,\ndrivers/net/usb/asix_devices.c:318:\t.set_wol\t\t= asix_set_wol,\ndrivers/net/usb/asix_devices.c-319-\t.get_eeprom_len\t\t= asix_get_eeprom_len,\n--\ndrivers/net/usb/asix_devices.c=975=static const struct ethtool_ops ax88178_ethtool_ops = {\n--\ndrivers/net/usb/asix_devices.c-980-\t.get_wol\t\t= asix_get_wol,\ndrivers/net/usb/asix_devices.c:981:\t.set_wol\t\t= asix_set_wol,\ndrivers/net/usb/asix_devices.c-982-\t.get_eeprom_len\t\t= asix_get_eeprom_len,\n--\ndrivers/net/usb/ax88172a.c=116=static const struct ethtool_ops ax88172a_ethtool_ops = {\n--\ndrivers/net/usb/ax88172a.c-121-\t.get_wol\t\t= asix_get_wol,\ndrivers/net/usb/ax88172a.c:122:\t.set_wol\t\t= asix_set_wol,\ndrivers/net/usb/ax88172a.c-123-\t.get_eeprom_len\t\t= asix_get_eeprom_len,\n"
}

gemini-3.8-flash

null

null

							input: 49590
							output: 40
							thoughts: 15
						

Okay, let's dive into this. Here's my take on those thoughts, as if they were my own:

**Investigating `asix_set_wol`**

Alright, time to get my hands dirty. I'm taking a look at this `asix_set_wol` function. What's it doing? I'm already picturing the likely scenarios: it's probably interacting with the ASIX chipset, setting up Wake-on-LAN functionality. I'll need to understand the underlying hardware registers or commands it's using to manipulate the chipset, or how it interfaces with the kernel to configure the network interface card's (NIC) wake-up capabilities. Knowing the specific ASIX model would be helpful, or maybe this code is general across various ASIX controllers. Let's see what's under the hood! I'm expecting this will involve bitwise operations and potentially some tricky interactions with interrupt handlers. I'm keen to get the specific details of its implementation!

{
  "File": "drivers/net/usb/asix_common.c",
  "FirstLine": 590,
  "LineCount": 35
}

{
  "Contents": " 590:\t\t\twolinfo-\u003ewolopts |= WAKE_MAGIC;\n 591:\t}\n 592:\t\n 593:\tint asix_set_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)\n 594:\t{\n 595:\t\tstruct usbnet *dev = netdev_priv(net);\n 596:\t\tu8 opt = 0;\n 597:\t\n 598:\t\tif (wolinfo-\u003ewolopts \u0026 ~(WAKE_PHY | WAKE_MAGIC))\n 599:\t\t\treturn -EINVAL;\n 600:\t\n 601:\t\tif (wolinfo-\u003ewolopts \u0026 WAKE_PHY)\n 602:\t\t\topt |= AX_MONITOR_LINK;\n 603:\t\tif (wolinfo-\u003ewolopts \u0026 WAKE_MAGIC)\n 604:\t\t\topt |= AX_MONITOR_MAGIC;\n 605:\t\n 606:\t\tif (asix_write_cmd(dev, AX_CMD_WRITE_MONITOR_MODE,\n 607:\t\t\t\t      opt, 0, 0, NULL, 0) \u003c 0)\n 608:\t\t\treturn -EINVAL;\n 609:\t\n 610:\t\treturn 0;\n 611:\t}\n 612:\t\n 613:\tint asix_get_eeprom_len(struct net_device *net)\n 614:\t{\n 615:\t\treturn AX_EEPROM_LEN;\n 616:\t}\n 617:\t\n 618:\tint asix_get_eeprom(struct net_device *net, struct ethtool_eeprom *eeprom,\n 619:\t\t\t    u8 *data)\n 620:\t{\n 621:\t\tstruct usbnet *dev = netdev_priv(net);\n 622:\t\tu16 *eeprom_buff;\n 623:\t\tint first_word, last_word;\n 624:\t\tint i;\n"
}

gemini-3.8-flash

null

null

							input: 50388
							output: 30
							thoughts: 2237
						

**Analysis of PHY Driver Reachability via USB Gadget**

Okay, first things first, I see that `asix_set_wol` doesn't use `phy_ethtool_set_wol`. Fine, moving on. I'm now looking at `lan78xx` and its `lan78xx_set_wol` function. This code seems relevant because it *does* call `phy_ethtool_set_wol`, but there's a few questions here. Specifically, I need to check how a Marvell PHY might be integrated with the LAN78XX.

I'm checking `lan78xx_get_phy` because I need to understand if `lan78xx` *can* even attach a Marvell PHY at all. I see the code attempts to find a PHY on the MDIO bus. Interesting... and it uses `phy_find_first`. It looks like it does find and support the Marvell PHY. Specifically, I'm noting that for `ID_REV_CHIP_ID_7801_`, there's no PHY mask being set (which is relevant.)

Now, I'm checking the MDIO bus initialization. The code sets the `phy_mask` based on the chip ID, but importantly, if the chip ID is `ID_REV_CHIP_ID_7801_`, the mask is effectively zero. This indicates *every* PHY should be scanned, which is perfect for my mental model.

I see that `mdiobus_scan_bus_c22` runs, and it looks like it scans the entire MDIO bus (0-31 addresses). And then it reads the PHY ID registers. If it finds a Marvell PHY with the expected ID (e.g., 0x01410e90, which is the 88E1318S), it will be added to the driver core. The `marvell.c` driver is compiled, so the device should match `marvell_drivers` because it registers the matching PHY ID.

Now, if a PHY is found, `lan78xx_get_phy` will return this Marvell PHY. This means, the device is found using the MDIO bus! This Marvell PHY is then connected, and finally, the user calling `ethtool -s` and a *call* to `phy_ethtool_set_wol` is actually made, which correctly calls `m88e1318_set_wol`. All checks out on the logic so far!

But now I have to check: is this a viable path for fuzzing? I have to go back and check the fuzzing rules *very* carefully.

The primary thing to note is that reachability is key. I'm noting that the code that I've found should be reachable and not hardware. This code path is reachable, and I'm very carefully checking the "worth fuzzing" criteria.

I *have* to make sure this is not unreachable hardware. I'm asking the questions: Is a Marvell PHY a discrete physical chip? Does it require physical hardware? This is the critical check!

I need to confirm if Syzkaller considers this reachable via USB gadget or if this is, in fact, structurally unreachable hardware. Does Syzkaller fuzz PHY drivers directly? I am checking the syzkaller documentation. Syzkaller supports `syz_usb_connect` and `raw-gadget`. Great, this is *very* promising!

Raw-gadget allows us to emulate arbitrary USB devices, so we can provide our own VID/PID and USB descriptors. This is *excellent* news, because this means we can emulate *any* device with Syzkaller.

But wait a minute... I must confirm, is `marvell.c` actually a USB driver? NO! It's an Ethernet PHY driver. This changes everything.

Can a PHY driver be probed over USB? It *can* be probed over USB! I'm now checking the LAN78XX datasheet. The LAN78XX *can* probe a Marvell PHY, and so this is *incredibly* exciting! I need to know: Is `CONFIG_USB_LAN78XX` a standard config or a discrete PHY chip? This code path *is* reachable!

Now, what does QEMU emulate? It doesn't emulate the Marvell PHY directly.

So, I need to check: What uses `marvell.c`? Where else is `marvell_drivers` used? I *need* to be sure, and verify my understanding. *IF* `lan78xx` is configured, *and* `marvell` is configured and enabled, then the `lan78xx` is reachable.

{
  "Expression": "MARVELL_PHY_ID_88E1318S"
}

{
  "Output": "drivers/net/phy/marvell.c=843=static void marvell_config_led(struct phy_device *phydev)\n--\ndrivers/net/phy/marvell.c-850-\tcase MARVELL_PHY_FAMILY_ID(MARVELL_PHY_ID_88E1121R):\ndrivers/net/phy/marvell.c:851:\tcase MARVELL_PHY_FAMILY_ID(MARVELL_PHY_ID_88E1318S):\ndrivers/net/phy/marvell.c-852-\t\tdef_config = MII_88E1121_PHY_LED_DEF;\n--\ndrivers/net/phy/marvell.c=3696=static struct phy_driver marvell_drivers[] = {\n--\ndrivers/net/phy/marvell.c-3840-\t{\ndrivers/net/phy/marvell.c:3841:\t\t.phy_id = MARVELL_PHY_ID_88E1318S,\ndrivers/net/phy/marvell.c-3842-\t\t.phy_id_mask = MARVELL_PHY_ID_MASK,\n--\ndrivers/net/phy/marvell.c=4208=static const struct mdio_device_id __maybe_unused marvell_tbl[] = {\n--\ndrivers/net/phy/marvell.c-4218-\t{ MARVELL_PHY_ID_88E1240, MARVELL_PHY_ID_MASK },\ndrivers/net/phy/marvell.c:4219:\t{ MARVELL_PHY_ID_88E1318S, MARVELL_PHY_ID_MASK },\ndrivers/net/phy/marvell.c-4220-\t{ MARVELL_PHY_ID_88E1116R, MARVELL_PHY_ID_MASK },\n--\ninclude/linux/marvell_phy.h-17-#define MARVELL_PHY_ID_88E1240\t\t0x01410e30\ninclude/linux/marvell_phy.h:18:#define MARVELL_PHY_ID_88E1318S\t\t0x01410e90\ninclude/linux/marvell_phy.h-19-#define MARVELL_PHY_ID_88E1340S\t\t0x01410dc0\n"
}

gemini-3.8-flash

null

null

							input: 54285
							output: 31
							thoughts: 22
						

Here's my take on those thoughts:

**Checking the PHY Kconfig for Marvell Support**

Okay, so I need to quickly refresh my memory on how Marvell PHY drivers are handled within the kernel build system. I'm going to jump straight into the `drivers/net/phy/Kconfig` file. That's the typical place where the configuration options for network PHYs are defined. Specifically, I'm looking for the `MARVELL_PHY` symbol. I'm assuming it's used to enable or disable the relevant Marvell PHY drivers during the kernel configuration process. This will let me confirm the existing configuration options. Understanding this is critical before I make any modifications or begin debugging.

{
  "Expression": "config MARVELL_PHY",
  "PathPrefix": "drivers/net/phy"
}

{
  "Output": "drivers/net/phy/Kconfig=273=config LSI_ET1011C_PHY\n--\ndrivers/net/phy/Kconfig-277-\ndrivers/net/phy/Kconfig:278:config MARVELL_PHY\ndrivers/net/phy/Kconfig-279-\ttristate \"Marvell Alaska PHYs\"\n"
}

gemini-3.8-flash

null

null

							input: 54586
							output: 36
							thoughts: 25
						

Here's my summary, as though I'm reading and processing the `drivers/net/phy/Kconfig` file, specifically lines 270-300:

**Analyzing the PHY Kconfig Options**

Alright, let's dive into this section of the Kconfig file for network PHY drivers, specifically lines 270 to 300. I'm focusing on the configuration options here. I know how important these files are in building a solid and configurable networking stack. I'm looking for the dependencies, the default settings, the help text, and of course, any relationships between different PHY drivers that might be defined in this block. I'm noting potential for redundancy or overlap in options that need a deeper dive. I'm expecting to see a structured approach to enable or disable different PHY types, with detailed descriptions so that developers can choose the right drivers for their hardware. I am looking at which drivers are mandatory and which can be selected at compile time. I'll flag anything that seems odd or potentially problematic, maybe a missing dependency or a confusing help text. This is all about ensuring the build system works correctly and that users can easily customize their PHY support.

{
  "File": "drivers/net/phy/Kconfig",
  "FirstLine": 275,
  "LineCount": 30
}

{
  "Contents": " 275:\t\thelp\n 276:\t\t  Supports the LSI ET1011C PHY.\n 277:\t\n 278:\tconfig MARVELL_PHY\n 279:\t\ttristate \"Marvell Alaska PHYs\"\n 280:\t\thelp\n 281:\t\t  Currently has a driver for the 88E1XXX\n 282:\t\n 283:\tconfig MARVELL_10G_PHY\n 284:\t\ttristate \"Marvell Alaska 10Gbit PHYs\"\n 285:\t\thelp\n 286:\t\t  Support for the Marvell Alaska MV88X3310 and compatible PHYs.\n 287:\t\n 288:\tconfig MARVELL_88Q2XXX_PHY\n 289:\t\ttristate \"Marvell 88Q2XXX PHY\"\n 290:\t\tdepends on HWMON || HWMON=n\n 291:\t\thelp\n 292:\t\t  Support for the Marvell 88Q2XXX 100/1000BASE-T1 Automotive Ethernet\n 293:\t\t  PHYs.\n 294:\t\n 295:\tconfig MARVELL_88X2222_PHY\n 296:\t\ttristate \"Marvell 88X2222 PHY\"\n 297:\t\thelp\n 298:\t\t  Support for the Marvell 88X2222 Dual-port Multi-speed Ethernet\n 299:\t\t  Transceiver.\n 300:\t\n 301:\tconfig MAXLINEAR_GPHY\n 302:\t\ttristate \"Maxlinear Ethernet PHYs\"\n 303:\t\tselect POLYNOMIAL if HWMON\n 304:\t\tdepends on HWMON || HWMON=n\n"
}

gemini-3.8-flash

null

null

							input: 55369
							output: 20
							thoughts: 17
						

Here's my attempt at summarizing the thought process, tailored for an expert audience:

**Investigating MARVELL_PHY Dependencies**

Okay, let's dive in. I need to understand what's actually *using* or *relying* on this `MARVELL_PHY` define. It's a key piece, and I have a feeling it's a bit more intricate than it seems on the surface. I want to see what driver code is checking for it, conditionally compiling code based on its presence, or using it directly in any macros or function calls. Understanding these dependencies will give me a clear picture of its scope and importance within the larger system. I'll need to use my typical techniques – likely grep, along with some more targeted searching based on how the codebase is structured. Maybe there are some naming conventions I can exploit to expedite the process. Gotta get to the bottom of this one.

{
  "Expression": "select MARVELL_PHY"
}

{
  "Output": "drivers/net/ethernet/hisilicon/Kconfig=40=config HIP04_ETH\n--\ndrivers/net/ethernet/hisilicon/Kconfig-42-\tdepends on HAS_IOMEM\t# For MFD_SYSCON\ndrivers/net/ethernet/hisilicon/Kconfig:43:\tselect MARVELL_PHY\ndrivers/net/ethernet/hisilicon/Kconfig-44-\tselect MFD_SYSCON\n"
}

gemini-3.8-flash

null

null

							input: 55719
							output: 25
							thoughts: 48
						

Okay, here's my take on those thoughts, framed as my own:

**Device Selection and Architecture Review**

Right, so `HIP04_ETH` has been configured to use the `MARVELL_PHY`. That's the basic hardware selection, understood. Now, the context is `HIP04` is a HiSilicon ARM SoC, specifically one based on the ARM architecture, and it seems to live under `arch/arm/mach-hisi` in the relevant code structure. My immediate thought is, *what else needs to be considered?* I always dig deeper, of course. Time to look at the Device Trees (dts) to see what other configurations and dependencies are present. I want to build a complete picture.

no matches

{
  "Expression": "marvell,88e1318s"
}

{
  "error": "no matches"
}

gemini-3.8-flash

null

null

							input: 55963
							output: 28
							thoughts: 16
						

Okay, here's my interpretation of that thought process, assuming I'm an expert in this field, and rendered in the first person:

**Investigating `marvell,88e1510`**

Alright, time to dive into this one. The mention of `marvell,88e1510` immediately flags a specific area of interest. "Marvell" is likely the manufacturer, so it's probably a chip, likely a network interface controller or related component. The `88e1510` is almost certainly the part number or model designation. My brain's already doing a quick mental database lookup – recalling potential datasheets, past issues I've seen with this particular silicon, and common application contexts. I'm going to start by pulling up those datasheets; that's the absolute baseline. From there, I'll be looking for known errata, typical operating parameters, and any specific quirks or common problems associated with the `88e1510`. I'll be trying to deduce its purpose and behavior. If it’s in a piece of hardware I’m familiar with, it’ll be a good jumping-off point. It could be some weird interaction with an existing platform, an uncommon power profile, or a recent bug report that rings a bell. The process is now systematic investigation and analysis.

no matches

{
  "Expression": "88e1510",
  "PathPrefix": "arch"
}

{
  "error": "no matches"
}

gemini-3.8-flash

null

null

							input: 56309
							output: 29
							thoughts: 92
						

**Device Tree Ethernet PHY Identification**

Okay, so I'm thinking about how we handle Ethernet PHYs in Device Tree. Typically, we're dealing with a few common identifiers, right? Either `ethernet-phy-id0141.0dd0`, or `marvell,88e1510`, or sometimes, we just rely on matching based on the PHY ID register reads, which is the standard IEEE 802.3 Clause 22 MDIO stuff. I need to refresh my memory, so, let's just go ahead and search for either the `0141` string, or the string `88E1510` within the `arch/` directory. That should give me a good handle on where and how these PHYs are being handled in the architecture.

no matches

{
  "Expression": "0141.*0dd0",
  "PathPrefix": "arch"
}

{
  "error": "no matches"
}

gemini-3.8-flash

null

null

							input: 56619
							output: 21
							thoughts: 0
						

{
  "Expression": "88E1510"
}

{
  "Output": "arch/arm/boot/dts/ti/keystone/keystone-k2e-evm.dts=163=\tethphy0: ethernet-phy@0 {\narch/arm/boot/dts/ti/keystone/keystone-k2e-evm.dts:164:\t\tcompatible = \"marvell,88E1514\", \"marvell,88E1510\", \"ethernet-phy-ieee802.3-c22\";\narch/arm/boot/dts/ti/keystone/keystone-k2e-evm.dts-165-\t\treg = \u003c0\u003e;\n--\narch/arm/boot/dts/ti/keystone/keystone-k2e-evm.dts=168=\tethphy1: ethernet-phy@1 {\narch/arm/boot/dts/ti/keystone/keystone-k2e-evm.dts:169:\t\tcompatible = \"marvell,88E1514\", \"marvell,88E1510\", \"ethernet-phy-ieee802.3-c22\";\narch/arm/boot/dts/ti/keystone/keystone-k2e-evm.dts-170-\t\treg = \u003c1\u003e;\n--\narch/arm/boot/dts/ti/keystone/keystone-k2l-evm.dts=136=\tethphy0: ethernet-phy@0 {\narch/arm/boot/dts/ti/keystone/keystone-k2l-evm.dts:137:\t\tcompatible = \"marvell,88E1514\", \"marvell,88E1510\", \"ethernet-phy-ieee802.3-c22\";\narch/arm/boot/dts/ti/keystone/keystone-k2l-evm.dts-138-\t\treg = \u003c0\u003e;\n--\narch/arm/boot/dts/ti/keystone/keystone-k2l-evm.dts=141=\tethphy1: ethernet-phy@1 {\narch/arm/boot/dts/ti/keystone/keystone-k2l-evm.dts:142:\t\tcompatible = \"marvell,88E1514\", \"marvell,88E1510\", \"ethernet-phy-ieee802.3-c22\";\narch/arm/boot/dts/ti/keystone/keystone-k2l-evm.dts-143-\t\treg = \u003c1\u003e;\n--\ndrivers/net/mdio/of_mdio.c=86=static const struct of_device_id whitelist_phys[] = {\n--\ndrivers/net/mdio/of_mdio.c-94-\t{ .compatible = \"marvell,88e1310\", },\ndrivers/net/mdio/of_mdio.c:95:\t{ .compatible = \"marvell,88E1510\", },\ndrivers/net/mdio/of_mdio.c-96-\t{ .compatible = \"marvell,88E1514\", },\n--\ndrivers/net/phy/marvell.c-98-#define MII_88E1121_MISC_TEST\t\t\t\t0x1a\ndrivers/net/phy/marvell.c:99:#define MII_88E1510_MISC_TEST_TEMP_THRESHOLD_MASK\t0x1f00\ndrivers/net/phy/marvell.c:100:#define MII_88E1510_MISC_TEST_TEMP_THRESHOLD_SHIFT\t8\ndrivers/net/phy/marvell.c:101:#define MII_88E1510_MISC_TEST_TEMP_IRQ_EN\t\tBIT(7)\ndrivers/net/phy/marvell.c:102:#define MII_88E1510_MISC_TEST_TEMP_IRQ\t\t\tBIT(6)\ndrivers/net/phy/marvell.c-103-#define MII_88E1121_MISC_TEST_TEMP_SENSOR_EN\t\tBIT(5)\n--\ndrivers/net/phy/marvell.c-105-\ndrivers/net/phy/marvell.c:106:#define MII_88E1510_TEMP_SENSOR\t\t0x1b\ndrivers/net/phy/marvell.c:107:#define MII_88E1510_TEMP_SENSOR_MASK\t0xff\ndrivers/net/phy/marvell.c-108-\n--\ndrivers/net/phy/marvell.c-168-#define MII_88E1121_PHY_LED_DEF\t\t0x0030\ndrivers/net/phy/marvell.c:169:#define MII_88E1510_PHY_LED_DEF\t\t0x1177\ndrivers/net/phy/marvell.c:170:#define MII_88E1510_PHY_LED0_LINK_LED1_ACTIVE\t0x1040\ndrivers/net/phy/marvell.c-171-\n--\ndrivers/net/phy/marvell.c-184-\ndrivers/net/phy/marvell.c:185:#define MII_88E1510_GEN_CTRL_REG_1\t\t0x14\ndrivers/net/phy/marvell.c:186:#define MII_88E1510_GEN_CTRL_REG_1_MODE_MASK\t0x7\ndrivers/net/phy/marvell.c:187:#define MII_88E1510_GEN_CTRL_REG_1_MODE_RGMII\t0x0\t/* RGMII to copper */\ndrivers/net/phy/marvell.c:188:#define MII_88E1510_GEN_CTRL_REG_1_MODE_SGMII\t0x1\t/* SGMII to copper */\ndrivers/net/phy/marvell.c-189-/* RGMII to 1000BASE-X */\ndrivers/net/phy/marvell.c:190:#define MII_88E1510_GEN_CTRL_REG_1_MODE_RGMII_1000X\t0x2\ndrivers/net/phy/marvell.c-191-/* RGMII to 100BASE-FX */\ndrivers/net/phy/marvell.c:192:#define MII_88E1510_GEN_CTRL_REG_1_MODE_RGMII_100FX\t0x3\ndrivers/net/phy/marvell.c-193-/* RGMII to SGMII */\ndrivers/net/phy/marvell.c:194:#define MII_88E1510_GEN_CTRL_REG_1_MODE_RGMII_SGMII\t0x4\ndrivers/net/phy/marvell.c:195:#define MII_88E1510_GEN_CTRL_REG_1_RESET\t0x8000\t/* Soft reset */\ndrivers/net/phy/marvell.c-196-\ndrivers/net/phy/marvell.c:197:#define MII_88E1510_MSCR_2\t\t0x15\ndrivers/net/phy/marvell.c-198-\n--\ndrivers/net/phy/marvell.c=843=static void marvell_config_led(struct phy_device *phydev)\n--\ndrivers/net/phy/marvell.c-858-\t */\ndrivers/net/phy/marvell.c:859:\tcase MARVELL_PHY_FAMILY_ID(MARVELL_PHY_ID_88E1510):\ndrivers/net/phy/marvell.c-860-\t\tif (phydev-\u003edev_flags \u0026 MARVELL_PHY_LED0_LINK_LED1_ACTIVE)\ndrivers/net/phy/marvell.c:861:\t\t\tdef_config = MII_88E1510_PHY_LED0_LINK_LED1_ACTIVE;\ndrivers/net/phy/marvell.c-862-\t\telse\ndrivers/net/phy/marvell.c:863:\t\t\tdef_config = MII_88E1510_PHY_LED_DEF;\ndrivers/net/phy/marvell.c-864-\t\tbreak;\n--\ndrivers/net/phy/marvell.c=1285=static int m88e1510_config_init(struct phy_device *phydev)\n--\ndrivers/net/phy/marvell.c-1297-\ndrivers/net/phy/marvell.c:1298:\t/* As per Marvell Release Notes - Alaska 88E1510/88E1518/88E1512/\ndrivers/net/phy/marvell.c-1299-\t * 88E1514 Rev A0, Errata Section 5.1:\n--\ndrivers/net/phy/marvell.c-1333-\t\t/* In reg 20, write MODE[2:0] = 0x1 (SGMII to Copper) */\ndrivers/net/phy/marvell.c:1334:\t\terr = phy_modify(phydev, MII_88E1510_GEN_CTRL_REG_1,\ndrivers/net/phy/marvell.c:1335:\t\t\t\t MII_88E1510_GEN_CTRL_REG_1_MODE_MASK,\ndrivers/net/phy/marvell.c:1336:\t\t\t\t MII_88E1510_GEN_CTRL_REG_1_MODE_SGMII);\ndrivers/net/phy/marvell.c-1337-\t\tif (err \u003c 0)\n--\ndrivers/net/phy/marvell.c-1340-\t\t/* PHY reset is necessary after changing MODE[2:0] */\ndrivers/net/phy/marvell.c:1341:\t\terr = phy_set_bits(phydev, MII_88E1510_GEN_CTRL_REG_1,\ndrivers/net/phy/marvell.c:1342:\t\t\t\t   MII_88E1510_GEN_CTRL_REG_1_RESET);\ndrivers/net/phy/marvell.c-1343-\t\tif (err \u003c 0)\n--\ndrivers/net/phy/marvell.c=2200=static int m88e1510_loopback(struct phy_device *phydev, bool enable, int speed)\n--\ndrivers/net/phy/marvell.c-2224-\terr = phy_modify_paged(phydev, MII_MARVELL_MSCR_PAGE,\ndrivers/net/phy/marvell.c:2225:\t\t\t       MII_88E1510_MSCR_2, BMCR_SPEED1000 |\ndrivers/net/phy/marvell.c-2226-\t\t\t       BMCR_SPEED100, mscr2_ctl);\n--\ndrivers/net/phy/marvell.c=2950=static int m88e1510_get_temp(struct phy_device *phydev, long *temp)\n--\ndrivers/net/phy/marvell.c-2956-\tret = phy_read_paged(phydev, MII_MARVELL_MISC_TEST_PAGE,\ndrivers/net/phy/marvell.c:2957:\t\t\t     MII_88E1510_TEMP_SENSOR);\ndrivers/net/phy/marvell.c-2958-\tif (ret \u003c 0)\n--\ndrivers/net/phy/marvell.c-2960-\ndrivers/net/phy/marvell.c:2961:\t*temp = ((ret \u0026 MII_88E1510_TEMP_SENSOR_MASK) - 25) * 1000;\ndrivers/net/phy/marvell.c-2962-\n--\ndrivers/net/phy/marvell.c=2966=static int m88e1510_get_temp_critical(struct phy_device *phydev, long *temp)\n--\ndrivers/net/phy/marvell.c-2976-\ndrivers/net/phy/marvell.c:2977:\t*temp = (((ret \u0026 MII_88E1510_MISC_TEST_TEMP_THRESHOLD_MASK) \u003e\u003e\ndrivers/net/phy/marvell.c:2978:\t\t  MII_88E1510_MISC_TEST_TEMP_THRESHOLD_SHIFT) * 5) - 25;\ndrivers/net/phy/marvell.c-2979-\t/* convert to mC */\n--\ndrivers/net/phy/marvell.c=2985=static int m88e1510_set_temp_critical(struct phy_device *phydev, long temp)\n--\ndrivers/net/phy/marvell.c-2991-\t\t\t\tMII_88E1121_MISC_TEST,\ndrivers/net/phy/marvell.c:2992:\t\t\t\tMII_88E1510_MISC_TEST_TEMP_THRESHOLD_MASK,\ndrivers/net/phy/marvell.c:2993:\t\t\t\ttemp \u003c\u003c MII_88E1510_MISC_TEST_TEMP_THRESHOLD_SHIFT);\ndrivers/net/phy/marvell.c-2994-}\n--\ndrivers/net/phy/marvell.c=2996=static int m88e1510_get_temp_alarm(struct phy_device *phydev, long *alarm)\n--\ndrivers/net/phy/marvell.c-3006-\ndrivers/net/phy/marvell.c:3007:\t*alarm = !!(ret \u0026 MII_88E1510_MISC_TEST_TEMP_IRQ);\ndrivers/net/phy/marvell.c-3008-\n--\ndrivers/net/phy/marvell.c=3069=static int m88e6393_get_temp(struct phy_device *phydev, long *temp)\n--\ndrivers/net/phy/marvell.c-3074-\ndrivers/net/phy/marvell.c:3075:\t/* 88E1510 measures T + 25, while the PHY on 88E6393X switch\ndrivers/net/phy/marvell.c-3076-\t * T + 75, so we have to subtract another 50\n--\ndrivers/net/phy/marvell.c=3630=static int m88e1510_port_configure_serdes(struct phy_port *port, bool enable,\n--\ndrivers/net/phy/marvell.c-3643-\t\tcase PHY_INTERFACE_MODE_1000BASEX:\ndrivers/net/phy/marvell.c:3644:\t\t\tmode = MII_88E1510_GEN_CTRL_REG_1_MODE_RGMII_1000X;\ndrivers/net/phy/marvell.c-3645-\n--\ndrivers/net/phy/marvell.c-3647-\t\tcase PHY_INTERFACE_MODE_100BASEX:\ndrivers/net/phy/marvell.c:3648:\t\t\tmode = MII_88E1510_GEN_CTRL_REG_1_MODE_RGMII_100FX;\ndrivers/net/phy/marvell.c-3649-\n--\ndrivers/net/phy/marvell.c-3651-\t\tcase PHY_INTERFACE_MODE_SGMII:\ndrivers/net/phy/marvell.c:3652:\t\t\tmode = MII_88E1510_GEN_CTRL_REG_1_MODE_RGMII_SGMII;\ndrivers/net/phy/marvell.c-3653-\n--\ndrivers/net/phy/marvell.c-3660-\t} else {\ndrivers/net/phy/marvell.c:3661:\t\tmode = MII_88E1510_GEN_CTRL_REG_1_MODE_RGMII;\ndrivers/net/phy/marvell.c-3662-\t}\n--\ndrivers/net/phy/marvell.c-3667-\ndrivers/net/phy/marvell.c:3668:\tret = __phy_modify(phydev, MII_88E1510_GEN_CTRL_REG_1,\ndrivers/net/phy/marvell.c:3669:\t\t\t   MII_88E1510_GEN_CTRL_REG_1_MODE_MASK, mode);\ndrivers/net/phy/marvell.c-3670-\tif (ret \u003c 0)\n--\ndrivers/net/phy/marvell.c-3672-\ndrivers/net/phy/marvell.c:3673:\tret = __phy_set_bits(phydev, MII_88E1510_GEN_CTRL_REG_1,\ndrivers/net/phy/marvell.c:3674:\t\t\t     MII_88E1510_GEN_CTRL_REG_1_RESET);\ndrivers/net/phy/marvell.c-3675-\n--\ndrivers/net/phy/marvell.c=3696=static struct phy_driver marvell_drivers[] = {\n--\ndrivers/net/phy/marvell.c-3946-\t{\ndrivers/net/phy/marvell.c:3947:\t\t.phy_id = MARVELL_PHY_ID_88E1510,\ndrivers/net/phy/marvell.c-3948-\t\t.phy_id_mask = MARVELL_PHY_ID_MASK,\ndrivers/net/phy/marvell.c:3949:\t\t.name = \"Marvell 88E1510\",\ndrivers/net/phy/marvell.c-3950-\t\t.driver_data = DEF_MARVELL_HWMON_OPS(m88e1510_hwmon_ops),\n--\ndrivers/net/phy/marvell.c=4208=static const struct mdio_device_id __maybe_unused marvell_tbl[] = {\n--\ndrivers/net/phy/marvell.c-4220-\t{ MARVELL_PHY_ID_88E1116R, MARVELL_PHY_ID_MASK },\ndrivers/net/phy/marvell.c:4221:\t{ MARVELL_PHY_ID_88E1510, MARVELL_PHY_ID_MASK },\ndrivers/net/phy/marvell.c-4222-\t{ MARVELL_PHY_ID_88E1540, MARVELL_PHY_ID_MASK },\n--\ninclude/linux/marvell_phy.h-20-#define MARVELL_PHY_ID_88E1116R\t\t0x01410e40\ninclude/linux/marvell_phy.h:21:#define MARVELL_PHY_ID_88E1510\t\t0x01410dd0\ninclude/linux/marvell_phy.h-22-#define MARVELL_PHY_ID_88E1540\t\t0x01410eb0\n"
}

gemini-3.8-flash

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null

							input: 61509
							output: 36
							thoughts: 576
						

**My Thought Process on Fuzzing the Marvell PHY Driver**

Okay, so I'm looking at this `keystone-k2e-evm.dts` file, and that immediately tells me we're dealing with a TI Keystone ARM system. But the real question is, how does this relate to x86_64 or amd64? Can an amd64 system even *have* a Marvell PHY? Of course, it can! Discrete PCIe NICs use them all the time. Think Marvell Alaska PHYs on network cards. Even embedded x86 motherboards can have them, connected via MDIO.

But here's the crucial question: Does QEMU or Google Compute Engine actually *emulate* any device with a Marvell Alaska PHY? This is where it gets tricky, and I need to reference the instructions.

Let's see... Section 2: "REACHABILITY IS THE PRIMARY GATE." Right, fuzzing only works on code that *executes* in standard virtualized environments. GCE or QEMU, using software-emulated devices, USB gadgets, netdev, tun/tap, that sort of thing. If the code is unreachable, forget it.

And the specifics: "Structurally unreachable hardware: Vendor-specific PCIe switches, SmartNICs, or GPU drivers (e.g., mlxsw, pds_core, qed, ionic, amdgpu) requiring physical ASIC/PCIe cards not emulated in standard QEMU."

Okay, so *is* `marvell.c` structurally unreachable? Does it fall under that "physical ASIC/PCIe cards not emulated" category? It's a real question I need to think about.

Wait, what about that USB gadget possibility? We saw it before. Can we leverage that? I need to investigate. Does syzkaller even emulate USB devices that instantiate MDIO buses and probe PHYs? Does syzkaller *test* PHY drivers through USB?

I need to dig into syzkaller's syzlang descriptions or figure out how USB raw-gadget works. Can syzkaller *itself*, or even a user program running in QEMU, emulate a USB device? Can we use `/dev/raw-gadget` or `dummy_hcd` or `gadgetfs` to create a USB device?

Okay, let's say syzkaller *does* create a USB device, and it sets the `idVendor` and `idProduct` to match something like a LAN78xx (e.g., a Microchip LAN7801). Then what? What VID/PID does LAN78xx *actually* bind to? Time to check `lan78xx.c` and confirm that hypothesis.

{
  "Expression": "USB_DEVICE\\(",
  "PathPrefix": "drivers/net/usb/lan78xx.c"
}

{
  "Output": "drivers/net/usb/lan78xx.c=5384=static const struct usb_device_id products[] = {\n--\ndrivers/net/usb/lan78xx.c-5386-\t/* LAN7800 USB Gigabit Ethernet Device */\ndrivers/net/usb/lan78xx.c:5387:\tUSB_DEVICE(LAN78XX_USB_VENDOR_ID, LAN7800_USB_PRODUCT_ID),\ndrivers/net/usb/lan78xx.c-5388-\t},\n--\ndrivers/net/usb/lan78xx.c-5390-\t/* LAN7850 USB Gigabit Ethernet Device */\ndrivers/net/usb/lan78xx.c:5391:\tUSB_DEVICE(LAN78XX_USB_VENDOR_ID, LAN7850_USB_PRODUCT_ID),\ndrivers/net/usb/lan78xx.c-5392-\t},\n--\ndrivers/net/usb/lan78xx.c-5394-\t/* LAN7801 USB Gigabit Ethernet Device */\ndrivers/net/usb/lan78xx.c:5395:\tUSB_DEVICE(LAN78XX_USB_VENDOR_ID, LAN7801_USB_PRODUCT_ID),\ndrivers/net/usb/lan78xx.c-5396-\t},\n--\ndrivers/net/usb/lan78xx.c-5398-\t/* ATM2-AF USB Gigabit Ethernet Device */\ndrivers/net/usb/lan78xx.c:5399:\tUSB_DEVICE(AT29M2AF_USB_VENDOR_ID, AT29M2AF_USB_PRODUCT_ID),\ndrivers/net/usb/lan78xx.c-5400-\t},\n"
}

gemini-3.8-flash

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							input: 63159
							output: 41
							thoughts: 41
						

**Diving into the LAN7801 Probe**

Okay, hold on a second. I need to refresh my memory on the LAN7801's initialization sequence. Specifically, what happens during the probe stage within `lan78xx.c`? My gut tells me this is where things get interesting, so let's zero in on that `lan78xx_probe` function. I'm going to quickly review its code flow to understand the key steps involved in bringing this interface online. It's time to refresh the steps to confirm my hypothesis.

{
  "File": "drivers/net/usb/lan78xx.c",
  "FirstLine": 5060,
  "LineCount": 80
}

{
  "Contents": "5060:\t\t\t\t\t\t(0 \u003c\u003c WUF_CFGX_OFFSET_SHIFT_) |\n5061:\t\t\t\t\t\t(crc \u0026 WUF_CFGX_CRC16_MASK_));\n5062:\t\t\tif (ret \u003c 0)\n5063:\t\t\t\treturn ret;\n5064:\t\n5065:\t\t\tret = lan78xx_write_reg(dev, WUF_MASK0(mask_index), 0x3000);\n5066:\t\t\tif (ret \u003c 0)\n5067:\t\t\t\treturn ret;\n5068:\t\t\tret = lan78xx_write_reg(dev, WUF_MASK1(mask_index), 0);\n5069:\t\t\tif (ret \u003c 0)\n5070:\t\t\t\treturn ret;\n5071:\t\t\tret = lan78xx_write_reg(dev, WUF_MASK2(mask_index), 0);\n5072:\t\t\tif (ret \u003c 0)\n5073:\t\t\t\treturn ret;\n5074:\t\t\tret = lan78xx_write_reg(dev, WUF_MASK3(mask_index), 0);\n5075:\t\t\tif (ret \u003c 0)\n5076:\t\t\t\treturn ret;\n5077:\t\n5078:\t\t\tmask_index++;\n5079:\t\n5080:\t\t\ttemp_pmt_ctl |= PMT_CTL_WOL_EN_;\n5081:\t\t\ttemp_pmt_ctl \u0026= ~PMT_CTL_SUS_MODE_MASK_;\n5082:\t\t\ttemp_pmt_ctl |= PMT_CTL_SUS_MODE_0_;\n5083:\t\t}\n5084:\t\n5085:\t\tret = lan78xx_write_reg(dev, WUCSR, temp_wucsr);\n5086:\t\tif (ret \u003c 0)\n5087:\t\t\treturn ret;\n5088:\t\n5089:\t\t/* when multiple WOL bits are set */\n5090:\t\tif (hweight_long((unsigned long)wol) \u003e 1) {\n5091:\t\t\ttemp_pmt_ctl |= PMT_CTL_WOL_EN_;\n5092:\t\t\ttemp_pmt_ctl \u0026= ~PMT_CTL_SUS_MODE_MASK_;\n5093:\t\t\ttemp_pmt_ctl |= PMT_CTL_SUS_MODE_0_;\n5094:\t\t}\n5095:\t\tret = lan78xx_write_reg(dev, PMT_CTL, temp_pmt_ctl);\n5096:\t\tif (ret \u003c 0)\n5097:\t\t\treturn ret;\n5098:\t\n5099:\t\t/* clear WUPS */\n5100:\t\tret = lan78xx_read_reg(dev, PMT_CTL, \u0026buf);\n5101:\t\tif (ret \u003c 0)\n5102:\t\t\treturn ret;\n5103:\t\n5104:\t\tbuf |= PMT_CTL_WUPS_MASK_;\n5105:\t\n5106:\t\tret = lan78xx_write_reg(dev, PMT_CTL, buf);\n5107:\t\tif (ret \u003c 0)\n5108:\t\t\treturn ret;\n5109:\t\n5110:\t\tret = lan78xx_start_rx_path(dev);\n5111:\t\n5112:\t\treturn ret;\n5113:\t}\n5114:\t\n5115:\tstatic int lan78xx_suspend(struct usb_interface *intf, pm_message_t message)\n5116:\t{\n5117:\t\tstruct lan78xx_net *dev = usb_get_intfdata(intf);\n5118:\t\tbool dev_open;\n5119:\t\tint ret;\n5120:\t\n5121:\t\tmutex_lock(\u0026dev-\u003edev_mutex);\n5122:\t\n5123:\t\tnetif_dbg(dev, ifdown, dev-\u003enet,\n5124:\t\t\t  \"suspending: pm event %#x\", message.event);\n5125:\t\n5126:\t\tdev_open = test_bit(EVENT_DEV_OPEN, \u0026dev-\u003eflags);\n5127:\t\n5128:\t\tif (dev_open) {\n5129:\t\t\tspin_lock_irq(\u0026dev-\u003etxq.lock);\n5130:\t\t\t/* don't autosuspend while transmitting */\n5131:\t\t\tif ((skb_queue_len(\u0026dev-\u003etxq) ||\n5132:\t\t\t     skb_queue_len(\u0026dev-\u003etxq_pend)) \u0026\u0026\n5133:\t\t\t    PMSG_IS_AUTO(message)) {\n5134:\t\t\t\tspin_unlock_irq(\u0026dev-\u003etxq.lock);\n5135:\t\t\t\tret = -EBUSY;\n5136:\t\t\t\tgoto out;\n5137:\t\t\t} else {\n5138:\t\t\t\tset_bit(EVENT_DEV_ASLEEP, \u0026dev-\u003eflags);\n5139:\t\t\t\tspin_unlock_irq(\u0026dev-\u003etxq.lock);\n"
}

gemini-3.8-flash

null

null

							input: 64670
							output: 38
							thoughts: 12
						

Okay, here's my attempt at summarizing the thought process, as if it were my own, assuming I'm an expert in embedded systems or driver development, and specifically dealing with the Linux kernel:

**Finding the Probe Function**

Alright, the game plan is clear: I need to locate the `lan78xx_probe` function. This is the entry point, the keystone of the LAN78xx Ethernet driver. I’ve probably seen it before, or at least a similar naming convention used in Microchip drivers. This is where the hardware initialization kicks off, the device is configured, and the driver hooks itself into the kernel's network stack. Without `lan78xx_probe`, nothing happens. So, I need to find it fast. Time to get to work.

{
  "Expression": "lan78xx_probe",
  "PathPrefix": "drivers/net/usb/lan78xx.c"
}

{
  "Output": "drivers/net/usb/lan78xx.c=4648=static void lan78xx_stat_monitor(struct timer_list *t)\n--\ndrivers/net/usb/lan78xx.c-4654-\ndrivers/net/usb/lan78xx.c:4655:static int lan78xx_probe(struct usb_interface *intf,\ndrivers/net/usb/lan78xx.c-4656-\t\t\t const struct usb_device_id *id)\n--\ndrivers/net/usb/lan78xx.c=5405=static struct usb_driver lan78xx_driver = {\n--\ndrivers/net/usb/lan78xx.c-5407-\t.id_table\t\t= products,\ndrivers/net/usb/lan78xx.c:5408:\t.probe\t\t\t= lan78xx_probe,\ndrivers/net/usb/lan78xx.c-5409-\t.disconnect\t\t= lan78xx_disconnect,\n"
}

gemini-3.8-flash

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null

### 1. Approaches Tried and Results

- **Patch Inspection**:
  - Commit dbdf8762dfeb788059c96e571d8ea3ecee631151 in `drivers/net/phy/marvell.c`.
  - Modifies `m88e1318_set_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol)`.
  - Added block executed when `!(wol->wolopts & (WAKE_MAGIC | WAKE_PHY))`:
    - Switches page to `MII_MARVELL_COPPER_PAGE`.
    - Clears `MII_88E1318S_PHY_CSIER_WOL_EIE` in register `MII_88E1318S_PHY_CSIER`.
    - Switches page to `MII_MARVELL_LED_PAGE`.
    - Modifies register `MII_88E1318S_PHY_LED_TCR` with bits `FORCE_INT | INTn_ENABLE | INT_ACTIVE_LOW` depending on `phy_interrupt_is_valid(phydev)`.
  - Target architecture: `amd64`.

- **Phylib Driver Registration & Match**:
  - `m88e1318_set_wol` is attached to:
    - `MARVELL_PHY_ID_88E1318S` (`0x01410e90`, mask `MARVELL_PHY_ID_MASK`)
    - `MARVELL_PHY_ID_88E1510` (`0x01410dd0`, mask `MARVELL_PHY_ID_MASK`)
  - Both IDs are declared in `marvell_drivers[]` and `marvell_tbl[]` in `drivers/net/phy/marvell.c`.
  - Driver build controlled by `CONFIG_MARVELL_PHY`.

- **MDIO Bus Scanning & Probing Analysis**:
  - Inspected `drivers/net/phy/mdio_bus_provider.c`:
    - `__mdiobus_register` calls `mdiobus_scan_bus_c22(bus)`.
    - `mdiobus_scan_bus_c22` loops over `0..PHY_MAX_ADDR-1` (if not masked by `phy_mask`) calling `mdiobus_scan_c22(bus, i)`.
    - `mdiobus_scan_c22` -> `mdiobus_scan` -> `get_phy_device(bus, addr, c45)` reads registers 2 and 3 (`MII_PHYSID1` and `MII_PHYSID2`).
    - If a PHY ID is read matching `MARVELL_PHY_ID_88E1318S` or `88E1510`, `phy_device_register` matches and binds `marvell.c` driver.

- **Reachability via Virtualized / Software-Emulated Hardware (USB Gadgets)**:
  - Investigated MDIO buses registered by software-emulatable devices (specifically USB network drivers):
    - `drivers/net/usb/asix_devices.c` (`ax88772_init_mdio`) registers an MDIO bus via `mdiobus_register(priv->mdio)`.
    - `drivers/net/usb/ax88172a.c` (`ax88172a_init_mdio`) registers an MDIO bus via `mdiobus_register(priv->mdio)`.
    - `drivers/net/usb/lan78xx.c` (`lan78xx_mdio_init`) registers an MDIO bus via `of_mdiobus_register(dev->mdiobus, node)`.
    - `drivers/net/usb/smsc95xx.c` (`smsc95xx_bind`) registers an MDIO bus via `mdiobus_register(pdata->mdiobus)`.
  - Checked `lan78xx.c` specifically:
    - In `lan78xx_phy_init`: finds phy with `phy_find_first(dev->mdiobus)` and attaches via `phylink_connect_phy`.
    - In `lan78xx_set_wol`: invokes `phy_ethtool_set_wol(netdev->phydev, wol)`.
  - Checked `phy_ethtool_set_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol)` in `drivers/net/phy/phy.c`:
    - Calls `phydev->drv->set_wol(phydev, wol)`.
    - Accessible from user space via standard ethtool ioctl (`SIOCETHTOOL` / `ETHTOOL_SWOL`) or netlink (`ETHTOOL_MSG_WOL_SET`).

- **Checked for Mock / Dummy MDIO Buses**:
  - Searched for `mdio.*mock`, `mdio.*dummy`, `mdio.*virtual`: none found.
  - MDIO buses exist predominantly on physical MACs and on USB net devices.

### 2. Current Hypotheses & Triage Analysis

- **Hypothesis A: Structurally Unreachable Hardware (Physical PHY Transceiver)**:
  - Marvell Alaska 88E1318S / 88E1510 is a physical discrete Ethernet PHY transceiver. Standard QEMU virtual network adapters (e1000, virtio-net, rtl8139, ne2k_pci) do not instantiate MDIO buses or Marvell PHY chips.
  - However, USB device emulation (via USB Raw Gadget / syzkaller `syz_usb_connect`) can emulate USB net devices like ASIX AX88772/AX88172A or Microchip LAN78xx.
  - In theory, when an emulated USB net device responds to MDIO read commands for MII registers 2 & 3 with the Marvell PHY ID, the kernel phylib core attaches `marvell.c`.
  - Question: Does syzkaller fuzzing or standard triage policy treat discrete PHY drivers under `drivers/net/phy/` as reachable via USB raw gadget, or as structurally unreachable hardware?
    - Core Triage Philosophy states:
      - "Reachability is the primary gate: Fuzzing can only discover bugs in code that can actually execute in standard virtualized environments (GCE or QEMU, utilizing software-emulated devices like USB gadgets, netdev, tun/tap). If the modified code is structurally unreachable, it MUST NOT be fuzzed."
      - USB raw gadget is an explicitly recognized software-emulated device ("utilizing software-emulated devices like USB gadgets").
      - But does any USB gadget actually instantiate a Marvell Alaska PHY in practice, or can raw gadget craft MDIO read responses to probe it?
      - Note also that `ax88172a` and `asix` do not expose `ethtool_ops.set_wol` passing through to phylib; only `lan78xx` directly calls `phy_ethtool_set_wol(netdev->phydev, wol)`.
      - In `lan78xx.c`, `lan78xx_mdio_init` calls `of_mdiobus_register`, which requires Device Tree on `udev->dev.of_node` or registers as a plain MDIO bus (on x86 without OF, node is NULL, which falls back to `mdiobus_register`).
      - However, syzkaller does not have pre-generated USB descriptors/emulation templates specifically for LAN78xx with an external Marvell 88E1318S PHY responding to MDIO C22 reads.
      - Conversely, is `drivers/net/phy/marvell.c` considered physical ASIC / transceiver hardware unreachable without physical Marvell hardware?
      - Look at Section 2: "Vendor-specific PCIe switches, SmartNICs, or GPU drivers (e.g., mlxsw, pds_core, ionic, amdgpu) requiring physical ASIC/PCIe cards not emulated in standard QEMU." Discrete PHY transceivers (Alaska PHYs) are physical external chips wired to MII/RGMII/SGMII interfaces.
      - Must evaluate whether this qualifies as `WorthFuzzing=true` or `WorthFuzzing=false`.

### 3. Critical Code Snippets and Configurations

- **Target Function:**
  ```c
  static int m88e1318_set_wol(struct phy_device *phydev,
                              struct ethtool_wolinfo *wol)
  ```
- **File:** `drivers/net/phy/marvell.c`
- **Call Chain:**
  - `ethtool_set_wol()` -> `dev->ethtool_ops->set_wol()` -> `phy_ethtool_set_wol(phydev, wol)` -> `phydev->drv->set_wol(phydev, wol)` (`m88e1318_set_wol`)
- **Required Configs:**
  - `MARVELL_PHY` (tristate in `drivers/net/phy/Kconfig`, depends on `PHYLIB`)
  - `PHYLIB`
  - `NETDEVICES`

### 4. Watch Out / Active Considerations

- Avoid repetitive greps for `mdiobus_register` across the whole kernel (generates 1000+ matches).
- Decide definitively whether `drivers/net/phy/marvell.c` is:
  1) Reachable because phylib + USB net gadget emulation / MDIO allows instantiating any PHY ID in QEMU.
  2) Or structurally unreachable hardware because standard QEMU does not emulate Marvell PHY chips and it requires physical discrete Marvell Ethernet transceivers.

							input: 48713
							output: 2252
							thoughts: 0
						

gemini-3.8-flash

null

null

							input: 21042
							output: 41
							thoughts: 0
						

{
  "File": "drivers/net/usb/lan78xx.c",
  "FirstLine": 4655,
  "LineCount": 50
}

{
  "Contents": "4655:\tstatic int lan78xx_probe(struct usb_interface *intf,\n4656:\t\t\t\t const struct usb_device_id *id)\n4657:\t{\n4658:\t\tstruct usb_host_endpoint *ep_blkin, *ep_blkout, *ep_intr;\n4659:\t\tstruct lan78xx_net *dev;\n4660:\t\tstruct net_device *netdev;\n4661:\t\tstruct usb_device *udev;\n4662:\t\tint ret;\n4663:\t\tunsigned int maxp;\n4664:\t\tunsigned int period;\n4665:\t\tu8 *buf = NULL;\n4666:\t\n4667:\t\tudev = interface_to_usbdev(intf);\n4668:\t\n4669:\t\tnetdev = alloc_etherdev(sizeof(struct lan78xx_net));\n4670:\t\tif (!netdev) {\n4671:\t\t\tdev_err(\u0026intf-\u003edev, \"Error: OOM\\n\");\n4672:\t\t\treturn -ENOMEM;\n4673:\t\t}\n4674:\t\n4675:\t\tSET_NETDEV_DEV(netdev, \u0026intf-\u003edev);\n4676:\t\n4677:\t\tdev = netdev_priv(netdev);\n4678:\t\tdev-\u003eudev = udev;\n4679:\t\tdev-\u003eintf = intf;\n4680:\t\tdev-\u003enet = netdev;\n4681:\t\tdev-\u003emsg_enable = netif_msg_init(msg_level, NETIF_MSG_DRV\n4682:\t\t\t\t\t\t| NETIF_MSG_PROBE | NETIF_MSG_LINK);\n4683:\t\n4684:\t\tskb_queue_head_init(\u0026dev-\u003erxq);\n4685:\t\tskb_queue_head_init(\u0026dev-\u003etxq);\n4686:\t\tskb_queue_head_init(\u0026dev-\u003erxq_done);\n4687:\t\tskb_queue_head_init(\u0026dev-\u003etxq_pend);\n4688:\t\tskb_queue_head_init(\u0026dev-\u003erxq_overflow);\n4689:\t\tmutex_init(\u0026dev-\u003emdiobus_mutex);\n4690:\t\tmutex_init(\u0026dev-\u003edev_mutex);\n4691:\t\n4692:\t\tret = lan78xx_urb_config_init(dev);\n4693:\t\tif (ret \u003c 0)\n4694:\t\t\tgoto out2;\n4695:\t\n4696:\t\tret = lan78xx_alloc_tx_resources(dev);\n4697:\t\tif (ret \u003c 0)\n4698:\t\t\tgoto out2;\n4699:\t\n4700:\t\tret = lan78xx_alloc_rx_resources(dev);\n4701:\t\tif (ret \u003c 0)\n4702:\t\t\tgoto out3;\n4703:\t\n4704:\t\t/* MTU range: 68 - 9000 */\n"
}

gemini-3.8-flash

null

null

							input: 21880
							output: 41
							thoughts: 0
						

{
  "File": "drivers/net/usb/lan78xx.c",
  "FirstLine": 4705,
  "LineCount": 70
}

{
  "Contents": "4705:\t\tnetdev-\u003emax_mtu = MAX_SINGLE_PACKET_SIZE;\n4706:\t\n4707:\t\tnetif_set_tso_max_size(netdev, LAN78XX_TSO_SIZE(dev));\n4708:\t\n4709:\t\tnetif_napi_add(netdev, \u0026dev-\u003enapi, lan78xx_poll);\n4710:\t\n4711:\t\tINIT_DELAYED_WORK(\u0026dev-\u003ewq, lan78xx_delayedwork);\n4712:\t\tinit_usb_anchor(\u0026dev-\u003edeferred);\n4713:\t\n4714:\t\tnetdev-\u003enetdev_ops = \u0026lan78xx_netdev_ops;\n4715:\t\tnetdev-\u003ewatchdog_timeo = TX_TIMEOUT_JIFFIES;\n4716:\t\tnetdev-\u003eethtool_ops = \u0026lan78xx_ethtool_ops;\n4717:\t\n4718:\t\tdev-\u003edelta = 1;\n4719:\t\ttimer_setup(\u0026dev-\u003estat_monitor, lan78xx_stat_monitor, 0);\n4720:\t\n4721:\t\tmutex_init(\u0026dev-\u003estats.access_lock);\n4722:\t\n4723:\t\tif (intf-\u003ecur_altsetting-\u003edesc.bNumEndpoints \u003c 3) {\n4724:\t\t\tret = -ENODEV;\n4725:\t\t\tgoto out4;\n4726:\t\t}\n4727:\t\n4728:\t\tdev-\u003epipe_in = usb_rcvbulkpipe(udev, BULK_IN_PIPE);\n4729:\t\tep_blkin = usb_pipe_endpoint(udev, dev-\u003epipe_in);\n4730:\t\tif (!ep_blkin || !usb_endpoint_is_bulk_in(\u0026ep_blkin-\u003edesc)) {\n4731:\t\t\tret = -ENODEV;\n4732:\t\t\tgoto out4;\n4733:\t\t}\n4734:\t\n4735:\t\tdev-\u003epipe_out = usb_sndbulkpipe(udev, BULK_OUT_PIPE);\n4736:\t\tep_blkout = usb_pipe_endpoint(udev, dev-\u003epipe_out);\n4737:\t\tif (!ep_blkout || !usb_endpoint_is_bulk_out(\u0026ep_blkout-\u003edesc)) {\n4738:\t\t\tret = -ENODEV;\n4739:\t\t\tgoto out4;\n4740:\t\t}\n4741:\t\n4742:\t\tep_intr = \u0026intf-\u003ecur_altsetting-\u003eendpoint[2];\n4743:\t\tif (!usb_endpoint_is_int_in(\u0026ep_intr-\u003edesc)) {\n4744:\t\t\tret = -ENODEV;\n4745:\t\t\tgoto out4;\n4746:\t\t}\n4747:\t\n4748:\t\tdev-\u003epipe_intr = usb_rcvintpipe(dev-\u003eudev,\n4749:\t\t\t\t\t\tusb_endpoint_num(\u0026ep_intr-\u003edesc));\n4750:\t\n4751:\t\tret = lan78xx_bind(dev, intf);\n4752:\t\tif (ret \u003c 0)\n4753:\t\t\tgoto out4;\n4754:\t\n4755:\t\tperiod = ep_intr-\u003edesc.bInterval;\n4756:\t\tmaxp = usb_maxpacket(dev-\u003eudev, dev-\u003epipe_intr);\n4757:\t\n4758:\t\tdev-\u003eurb_intr = usb_alloc_urb(0, GFP_KERNEL);\n4759:\t\tif (!dev-\u003eurb_intr) {\n4760:\t\t\tret = -ENOMEM;\n4761:\t\t\tgoto out5;\n4762:\t\t}\n4763:\t\n4764:\t\tbuf = kmalloc(maxp, GFP_KERNEL);\n4765:\t\tif (!buf) {\n4766:\t\t\tret = -ENOMEM;\n4767:\t\t\tgoto free_urbs;\n4768:\t\t}\n4769:\t\n4770:\t\tusb_fill_int_urb(dev-\u003eurb_intr, dev-\u003eudev,\n4771:\t\t\t\t dev-\u003epipe_intr, buf, maxp,\n4772:\t\t\t\t intr_complete, dev, period);\n4773:\t\tdev-\u003eurb_intr-\u003etransfer_flags |= URB_FREE_BUFFER;\n4774:\t\n"
}

gemini-3.8-flash

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							input: 23062
							output: 41
							thoughts: 0
						

{
  "File": "drivers/net/usb/lan78xx.c",
  "FirstLine": 4775,
  "LineCount": 60
}

{
  "Contents": "4775:\t\tdev-\u003emaxpacket = usb_maxpacket(dev-\u003eudev, dev-\u003epipe_out);\n4776:\t\n4777:\t\t/* Reject broken descriptors. */\n4778:\t\tif (dev-\u003emaxpacket == 0) {\n4779:\t\t\tret = -ENODEV;\n4780:\t\t\tgoto free_urbs;\n4781:\t\t}\n4782:\t\n4783:\t\t/* driver requires remote-wakeup capability during autosuspend. */\n4784:\t\tintf-\u003eneeds_remote_wakeup = 1;\n4785:\t\n4786:\t\tret = lan78xx_phy_init(dev);\n4787:\t\tif (ret \u003c 0)\n4788:\t\t\tgoto free_urbs;\n4789:\t\n4790:\t\tret = register_netdev(netdev);\n4791:\t\tif (ret != 0) {\n4792:\t\t\tnetif_err(dev, probe, netdev, \"couldn't register the device\\n\");\n4793:\t\t\tgoto phy_uninit;\n4794:\t\t}\n4795:\t\n4796:\t\tusb_set_intfdata(intf, dev);\n4797:\t\n4798:\t\tret = device_set_wakeup_enable(\u0026udev-\u003edev, true);\n4799:\t\n4800:\t\t /* Default delay of 2sec has more overhead than advantage.\n4801:\t\t  * Set to 10sec as default.\n4802:\t\t  */\n4803:\t\tpm_runtime_set_autosuspend_delay(\u0026udev-\u003edev,\n4804:\t\t\t\t\t\t DEFAULT_AUTOSUSPEND_DELAY);\n4805:\t\n4806:\t\treturn 0;\n4807:\t\n4808:\tphy_uninit:\n4809:\t\tlan78xx_phy_uninit(dev);\n4810:\tfree_urbs:\n4811:\t\tusb_free_urb(dev-\u003eurb_intr);\n4812:\tout5:\n4813:\t\tlan78xx_unbind(dev, intf);\n4814:\tout4:\n4815:\t\tnetif_napi_del(\u0026dev-\u003enapi);\n4816:\t\tlan78xx_free_rx_resources(dev);\n4817:\tout3:\n4818:\t\tlan78xx_free_tx_resources(dev);\n4819:\tout2:\n4820:\t\tfree_netdev(netdev);\n4821:\t\n4822:\t\treturn ret;\n4823:\t}\n4824:\t\n4825:\tstatic u16 lan78xx_wakeframe_crc16(const u8 *buf, int len)\n4826:\t{\n4827:\t\tconst u16 crc16poly = 0x8005;\n4828:\t\tint i;\n4829:\t\tu16 bit, crc, msb;\n4830:\t\tu8 data;\n4831:\t\n4832:\t\tcrc = 0xFFFF;\n4833:\t\tfor (i = 0; i \u003c len; i++) {\n4834:\t\t\tdata = *buf++;\n"
}

gemini-3.8-flash

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							input: 23960
							output: 41
							thoughts: 0
						

{
  "File": "drivers/net/usb/lan78xx.c",
  "FirstLine": 2680,
  "LineCount": 80
}

{
  "Contents": "2680:\t\t\tdev-\u003einterface = PHY_INTERFACE_MODE_GMII;\n2681:\t\t\tphydev-\u003eis_internal = true;\n2682:\t\t\treturn phydev;\n2683:\t\n2684:\t\tdefault:\n2685:\t\t\tnetdev_err(dev-\u003enet, \"Unknown CHIP ID: 0x%08x\\n\", dev-\u003echipid);\n2686:\t\t\treturn ERR_PTR(-ENODEV);\n2687:\t\t}\n2688:\t}\n2689:\t\n2690:\t/**\n2691:\t * lan78xx_mac_prepare_for_phy() - Preconfigure MAC-side interface settings\n2692:\t * @dev: LAN78xx device\n2693:\t *\n2694:\t * Configure MAC-side registers according to dev-\u003einterface, which should be\n2695:\t * set by lan78xx_get_phy().\n2696:\t *\n2697:\t * - For PHY_INTERFACE_MODE_RGMII:\n2698:\t *   Enable MAC-side TXC delay. This mode seems to be used in a special setup\n2699:\t *   without a real PHY, likely on EVB-KSZ9897-1. In that design, LAN7801 is\n2700:\t *   connected to the KSZ9897 switch, and the link timing is expected to be\n2701:\t *   hardwired (e.g. via strapping or board layout). No devicetree support is\n2702:\t *   assumed here.\n2703:\t *\n2704:\t * - For PHY_INTERFACE_MODE_RGMII_ID:\n2705:\t *   Disable MAC-side delay and rely on the PHY driver to provide delay.\n2706:\t *\n2707:\t * - For GMII, no MAC-specific config is needed.\n2708:\t *\n2709:\t * Return: 0 on success or a negative error code.\n2710:\t */\n2711:\tstatic int lan78xx_mac_prepare_for_phy(struct lan78xx_net *dev)\n2712:\t{\n2713:\t\tint ret;\n2714:\t\n2715:\t\tswitch (dev-\u003einterface) {\n2716:\t\tcase PHY_INTERFACE_MODE_RGMII:\n2717:\t\t\t/* Enable MAC-side TX clock delay */\n2718:\t\t\tret = lan78xx_write_reg(dev, MAC_RGMII_ID,\n2719:\t\t\t\t\t\tMAC_RGMII_ID_TXC_DELAY_EN_);\n2720:\t\t\tif (ret \u003c 0)\n2721:\t\t\t\treturn ret;\n2722:\t\n2723:\t\t\tret = lan78xx_write_reg(dev, RGMII_TX_BYP_DLL, 0x3D00);\n2724:\t\t\tif (ret \u003c 0)\n2725:\t\t\t\treturn ret;\n2726:\t\n2727:\t\t\tret = lan78xx_update_reg(dev, HW_CFG,\n2728:\t\t\t\t\t\t HW_CFG_CLK125_EN_ | HW_CFG_REFCLK25_EN_,\n2729:\t\t\t\t\t\t HW_CFG_CLK125_EN_ | HW_CFG_REFCLK25_EN_);\n2730:\t\t\tif (ret \u003c 0)\n2731:\t\t\t\treturn ret;\n2732:\t\n2733:\t\t\tbreak;\n2734:\t\n2735:\t\tcase PHY_INTERFACE_MODE_RGMII_ID:\n2736:\t\t\t/* Disable MAC-side TXC delay, PHY provides it */\n2737:\t\t\tret = lan78xx_write_reg(dev, MAC_RGMII_ID, 0);\n2738:\t\t\tif (ret \u003c 0)\n2739:\t\t\t\treturn ret;\n2740:\t\n2741:\t\t\tbreak;\n2742:\t\n2743:\t\tcase PHY_INTERFACE_MODE_GMII:\n2744:\t\t\t/* No MAC-specific configuration required */\n2745:\t\t\tbreak;\n2746:\t\n2747:\t\tdefault:\n2748:\t\t\tnetdev_warn(dev-\u003enet, \"Unsupported interface mode: %d\\n\",\n2749:\t\t\t\t    dev-\u003einterface);\n2750:\t\t\tbreak;\n2751:\t\t}\n2752:\t\n2753:\t\treturn 0;\n2754:\t}\n2755:\t\n2756:\t/**\n2757:\t * lan78xx_configure_leds_from_dt() - Configure LED enables based on DT\n2758:\t * @dev: LAN78xx device\n2759:\t * @phydev: PHY device (must be valid)\n"
}

gemini-3.8-flash

null

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							input: 25264
							output: 41
							thoughts: 0
						

{
  "File": "drivers/net/usb/lan78xx.c",
  "FirstLine": 2640,
  "LineCount": 45
}

{
  "Contents": "2640:\t * lan78xx_get_phy() - Probe or register PHY device and set interface mode\n2641:\t * @dev: LAN78xx device structure\n2642:\t *\n2643:\t * This function attempts to find a PHY on the MDIO bus. If no PHY is found\n2644:\t * and the chip is LAN7801, it registers a fixed PHY as fallback. It also\n2645:\t * sets dev-\u003einterface based on chip ID and detected PHY type.\n2646:\t *\n2647:\t * Return: a valid PHY device pointer, or ERR_PTR() on failure.\n2648:\t */\n2649:\tstatic struct phy_device *lan78xx_get_phy(struct lan78xx_net *dev)\n2650:\t{\n2651:\t\tstruct phy_device *phydev;\n2652:\t\n2653:\t\t/* Attempt to locate a PHY on the MDIO bus */\n2654:\t\tphydev = phy_find_first(dev-\u003emdiobus);\n2655:\t\n2656:\t\tswitch (dev-\u003echipid) {\n2657:\t\tcase ID_REV_CHIP_ID_7801_:\n2658:\t\t\tif (phydev) {\n2659:\t\t\t\t/* External RGMII PHY detected */\n2660:\t\t\t\tdev-\u003einterface = PHY_INTERFACE_MODE_RGMII_ID;\n2661:\t\t\t\tphydev-\u003eis_internal = false;\n2662:\t\n2663:\t\t\t\tif (!phydev-\u003edrv)\n2664:\t\t\t\t\tnetdev_warn(dev-\u003enet,\n2665:\t\t\t\t\t\t    \"PHY driver not found – assuming RGMII delays are on PCB or strapped for the PHY\\n\");\n2666:\t\n2667:\t\t\t\treturn phydev;\n2668:\t\t\t}\n2669:\t\n2670:\t\t\tdev-\u003einterface = PHY_INTERFACE_MODE_RGMII;\n2671:\t\t\t/* No PHY found – fallback to fixed PHY (e.g. KSZ switch board) */\n2672:\t\t\treturn NULL;\n2673:\t\n2674:\t\tcase ID_REV_CHIP_ID_7800_:\n2675:\t\tcase ID_REV_CHIP_ID_7850_:\n2676:\t\t\tif (!phydev)\n2677:\t\t\t\treturn ERR_PTR(-ENODEV);\n2678:\t\n2679:\t\t\t/* These use internal GMII-connected PHY */\n2680:\t\t\tdev-\u003einterface = PHY_INTERFACE_MODE_GMII;\n2681:\t\t\tphydev-\u003eis_internal = true;\n2682:\t\t\treturn phydev;\n2683:\t\n2684:\t\tdefault:\n"
}

gemini-3.8-flash

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							input: 26023
							output: 23
							thoughts: 0
						

{
  "Expression": "phy_ethtool_set_wol"
}

{
  "Output": "Documentation/networking/sfp-phylink.rst=74=this documentation.\n--\nDocumentation/networking/sfp-phylink.rst-127-      - phylink_ethtool_get_wol(priv-\u003ephylink, wol)\nDocumentation/networking/sfp-phylink.rst:128:    * - phy_ethtool_set_wol(phydev, wol)\nDocumentation/networking/sfp-phylink.rst-129-      - phylink_ethtool_set_wol(priv-\u003ephylink, wol)\n--\ndrivers/net/ethernet/broadcom/asp2/bcmasp_ethtool.c=194=static int bcmasp_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)\n--\ndrivers/net/ethernet/broadcom/asp2/bcmasp_ethtool.c-202-\tif (dev-\u003ephydev) {\ndrivers/net/ethernet/broadcom/asp2/bcmasp_ethtool.c:203:\t\tret = phy_ethtool_set_wol(dev-\u003ephydev, wol);\ndrivers/net/ethernet/broadcom/asp2/bcmasp_ethtool.c-204-\t\tif (ret != -EOPNOTSUPP \u0026\u0026 wol-\u003ewolopts)\n--\ndrivers/net/ethernet/broadcom/genet/bcmgenet_wol.c=72=int bcmgenet_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)\n--\ndrivers/net/ethernet/broadcom/genet/bcmgenet_wol.c-79-\tif (dev-\u003ephydev) {\ndrivers/net/ethernet/broadcom/genet/bcmgenet_wol.c:80:\t\tret = phy_ethtool_set_wol(dev-\u003ephydev, wol);\ndrivers/net/ethernet/broadcom/genet/bcmgenet_wol.c-81-\t\tif (ret != -EOPNOTSUPP \u0026\u0026 wol-\u003ewolopts)\n--\ndrivers/net/ethernet/freescale/enetc/enetc_ethtool.c=1235=static int enetc_set_wol(struct net_device *dev,\n--\ndrivers/net/ethernet/freescale/enetc/enetc_ethtool.c-1242-\ndrivers/net/ethernet/freescale/enetc/enetc_ethtool.c:1243:\tret = phy_ethtool_set_wol(dev-\u003ephydev, wol);\ndrivers/net/ethernet/freescale/enetc/enetc_ethtool.c-1244-\tif (!ret)\n--\ndrivers/net/ethernet/marvell/mv643xx_eth.c=1551=mv643xx_eth_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)\n--\ndrivers/net/ethernet/marvell/mv643xx_eth.c-1557-\ndrivers/net/ethernet/marvell/mv643xx_eth.c:1558:\terr = phy_ethtool_set_wol(dev-\u003ephydev, wol);\ndrivers/net/ethernet/marvell/mv643xx_eth.c-1559-\t/* Given that mv643xx_eth works without the marvell-specific PHY driver,\n--\ndrivers/net/ethernet/socionext/sni_ave.c=428=static int __ave_ethtool_set_wol(struct net_device *ndev,\n--\ndrivers/net/ethernet/socionext/sni_ave.c-434-\ndrivers/net/ethernet/socionext/sni_ave.c:435:\treturn phy_ethtool_set_wol(ndev-\u003ephydev, wol);\ndrivers/net/ethernet/socionext/sni_ave.c-436-}\n--\ndrivers/net/ethernet/ti/cpsw_ethtool.c=339=int cpsw_set_wol(struct net_device *ndev, struct ethtool_wolinfo *wol)\n--\ndrivers/net/ethernet/ti/cpsw_ethtool.c-345-\tif (cpsw-\u003eslaves[slave_no].phy)\ndrivers/net/ethernet/ti/cpsw_ethtool.c:346:\t\treturn phy_ethtool_set_wol(cpsw-\u003eslaves[slave_no].phy, wol);\ndrivers/net/ethernet/ti/cpsw_ethtool.c-347-\telse\n--\ndrivers/net/phy/phy.c=2019=EXPORT_SYMBOL(phy_ethtool_set_eee);\n--\ndrivers/net/phy/phy.c-2021-/**\ndrivers/net/phy/phy.c:2022: * phy_ethtool_set_wol - Configure Wake On LAN\ndrivers/net/phy/phy.c-2023- *\n--\ndrivers/net/phy/phy.c-2026- */\ndrivers/net/phy/phy.c:2027:int phy_ethtool_set_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol)\ndrivers/net/phy/phy.c-2028-{\n--\ndrivers/net/phy/phy.c-2040-}\ndrivers/net/phy/phy.c:2041:EXPORT_SYMBOL(phy_ethtool_set_wol);\ndrivers/net/phy/phy.c-2042-\n--\ndrivers/net/phy/phylink.c=2887=int phylink_ethtool_set_wol(struct phylink *pl, struct ethtool_wolinfo *wol)\n--\ndrivers/net/phy/phylink.c-2899-\t\tif (phylink_phy_supports_wol(pl, pl-\u003ephydev)) {\ndrivers/net/phy/phylink.c:2900:\t\t\tret = phy_ethtool_set_wol(pl-\u003ephydev, wol);\ndrivers/net/phy/phylink.c-2901-\t\t\tif (ret != 0 \u0026\u0026 ret != -EOPNOTSUPP)\n--\ndrivers/net/phy/phylink.c-2928-\t\tif (pl-\u003ephydev)\ndrivers/net/phy/phylink.c:2929:\t\t\tret = phy_ethtool_set_wol(pl-\u003ephydev, wol);\ndrivers/net/phy/phylink.c-2930-\t}\n--\ndrivers/net/usb/lan78xx.c=1788=static int lan78xx_set_wol(struct net_device *netdev,\n--\ndrivers/net/usb/lan78xx.c-1807-\ndrivers/net/usb/lan78xx.c:1808:\tret = phy_ethtool_set_wol(netdev-\u003ephydev, wol);\ndrivers/net/usb/lan78xx.c-1809-\n--\ninclude/linux/phy.h=2453=int phy_ethtool_get_eee(struct phy_device *phydev, struct ethtool_keee *data);\ninclude/linux/phy.h:2454:int phy_ethtool_set_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol);\ninclude/linux/phy.h-2455-void phy_ethtool_get_wol(struct phy_device *phydev,\n"
}

gemini-3.8-flash

null

null

							input: 27914
							output: 32
							thoughts: 0
						

{
  "Expression": "struct mdio_device_id",
  "PathPrefix": "drivers/net/phy"
}

{
  "Output": "drivers/net/phy/adin.c=1059=module_phy_driver(adin_driver);\ndrivers/net/phy/adin.c-1060-\ndrivers/net/phy/adin.c:1061:static const struct mdio_device_id __maybe_unused adin_tbl[] = {\ndrivers/net/phy/adin.c-1062-\t{ PHY_ID_MATCH_MODEL(PHY_ID_ADIN1200) },\n--\ndrivers/net/phy/adin1100.c=343=module_phy_driver(adin_driver);\ndrivers/net/phy/adin1100.c-344-\ndrivers/net/phy/adin1100.c:345:static const struct mdio_device_id __maybe_unused adin_tbl[] = {\ndrivers/net/phy/adin1100.c-346-\t{ PHY_ID_MATCH_MODEL(PHY_ID_ADIN1100) },\n--\ndrivers/net/phy/adin1140-phy.c=61=module_phy_driver(adin1140_driver);\ndrivers/net/phy/adin1140-phy.c-62-\ndrivers/net/phy/adin1140-phy.c:63:static const struct mdio_device_id __maybe_unused adin1140_tbl[] = {\ndrivers/net/phy/adin1140-phy.c-64-\t{ PHY_ID_MATCH_EXACT(ADIN1140_PHY_ID) },\n--\ndrivers/net/phy/air_an8801.c=1146=module_phy_driver(airoha_driver);\ndrivers/net/phy/air_an8801.c-1147-\ndrivers/net/phy/air_an8801.c:1148:static struct mdio_device_id __maybe_unused an8801_tbl[] = {\ndrivers/net/phy/air_an8801.c-1149-\t{ PHY_ID_MATCH_MODEL(AN8801R_PHY_ID) },\n--\ndrivers/net/phy/air_en8811h.c=1621=module_phy_driver(en8811h_driver);\ndrivers/net/phy/air_en8811h.c-1622-\ndrivers/net/phy/air_en8811h.c:1623:static const struct mdio_device_id __maybe_unused en8811h_tbl[] = {\ndrivers/net/phy/air_en8811h.c-1624-\t{ PHY_ID_MATCH_MODEL(EN8811H_PHY_ID) },\n--\ndrivers/net/phy/amd.c=112=module_phy_driver(am79c_drivers);\ndrivers/net/phy/amd.c-113-\ndrivers/net/phy/amd.c:114:static const struct mdio_device_id __maybe_unused amd_tbl[] = {\ndrivers/net/phy/amd.c-115-\t{ PHY_ID_AC101L, 0xfffffff0 },\n--\ndrivers/net/phy/aquantia/aquantia_main.c=1565=module_phy_driver(aqr_driver);\ndrivers/net/phy/aquantia/aquantia_main.c-1566-\ndrivers/net/phy/aquantia/aquantia_main.c:1567:static const struct mdio_device_id __maybe_unused aqr_tbl[] = {\ndrivers/net/phy/aquantia/aquantia_main.c-1568-\t{ PHY_ID_MATCH_MODEL(PHY_ID_AQ1202) },\n--\ndrivers/net/phy/as21xxx.c=1078=module_phy_driver(as21xxx_drivers);\ndrivers/net/phy/as21xxx.c-1079-\ndrivers/net/phy/as21xxx.c:1080:static struct mdio_device_id __maybe_unused as21xxx_tbl[] = {\ndrivers/net/phy/as21xxx.c-1081-\t{ PHY_ID_MATCH_VENDOR(PHY_VENDOR_AEONSEMI) },\n--\ndrivers/net/phy/ax88796b.c=121=module_phy_driver(asix_driver);\ndrivers/net/phy/ax88796b.c-122-\ndrivers/net/phy/ax88796b.c:123:static const struct mdio_device_id __maybe_unused asix_tbl[] = {\ndrivers/net/phy/ax88796b.c-124-\t{ PHY_ID_MATCH_EXACT(PHY_ID_ASIX_AX88772A) },\n--\ndrivers/net/phy/bcm-cygnus.c=252=static struct phy_driver bcm_cygnus_phy_driver[] = {\n--\ndrivers/net/phy/bcm-cygnus.c-280-\ndrivers/net/phy/bcm-cygnus.c:281:static const struct mdio_device_id __maybe_unused bcm_cygnus_phy_tbl[] = {\ndrivers/net/phy/bcm-cygnus.c-282-\t{ PHY_ID_BCM_CYGNUS, 0xfffffff0, },\n--\ndrivers/net/phy/bcm54140.c=885=module_phy_driver(bcm54140_drivers);\ndrivers/net/phy/bcm54140.c-886-\ndrivers/net/phy/bcm54140.c:887:static const struct mdio_device_id __maybe_unused bcm54140_tbl[] = {\ndrivers/net/phy/bcm54140.c-888-\t{ PHY_ID_BCM54140, BCM54140_PHY_ID_MASK },\n--\ndrivers/net/phy/bcm63xx.c=94=module_phy_driver(bcm63xx_driver);\ndrivers/net/phy/bcm63xx.c-95-\ndrivers/net/phy/bcm63xx.c:96:static const struct mdio_device_id __maybe_unused bcm63xx_tbl[] = {\ndrivers/net/phy/bcm63xx.c-97-\t{ 0x00406000, 0xfffffc00 },\n--\ndrivers/net/phy/bcm7xxx.c=921=static struct phy_driver bcm7xxx_driver[] = {\n--\ndrivers/net/phy/bcm7xxx.c-945-\ndrivers/net/phy/bcm7xxx.c:946:static const struct mdio_device_id __maybe_unused bcm7xxx_tbl[] = {\ndrivers/net/phy/bcm7xxx.c-947-\t{ PHY_ID_BCM72113, 0xfffffff0 },\n--\ndrivers/net/phy/bcm84881.c=462=module_phy_driver(bcm84881_drivers);\n--\ndrivers/net/phy/bcm84881.c-464-/* FIXME: module auto-loading for Clause 45 PHYs seems non-functional */\ndrivers/net/phy/bcm84881.c:465:static const struct mdio_device_id __maybe_unused bcm84881_tbl[] = {\ndrivers/net/phy/bcm84881.c-466-\t{ 0xae025150, 0xfffffff0 },\n--\ndrivers/net/phy/broadcom.c=1754=module_phy_driver(broadcom_drivers);\ndrivers/net/phy/broadcom.c-1755-\ndrivers/net/phy/broadcom.c:1756:static const struct mdio_device_id __maybe_unused broadcom_tbl[] = {\ndrivers/net/phy/broadcom.c-1757-\t{ PHY_ID_MATCH_MODEL(PHY_ID_BCM5411) },\n--\ndrivers/net/phy/cicada.c=146=module_phy_driver(cis820x_driver);\ndrivers/net/phy/cicada.c-147-\ndrivers/net/phy/cicada.c:148:static const struct mdio_device_id __maybe_unused cicada_tbl[] = {\ndrivers/net/phy/cicada.c-149-\t{ 0x000fc410, 0x000ffff0 },\n--\ndrivers/net/phy/cortina.c=88=module_phy_driver(cortina_driver);\ndrivers/net/phy/cortina.c-89-\ndrivers/net/phy/cortina.c:90:static const struct mdio_device_id __maybe_unused cortina_tbl[] = {\ndrivers/net/phy/cortina.c-91-\t{ PHY_ID_CS4340, 0xffffffff},\n--\ndrivers/net/phy/dap8211r.c=213=MODULE_LICENSE(\"GPL\");\ndrivers/net/phy/dap8211r.c-214-\ndrivers/net/phy/dap8211r.c:215:static const struct mdio_device_id __maybe_unused dap8211r_tb[] = {\ndrivers/net/phy/dap8211r.c-216-\t{ DAP8211R_PHY_ID, DAP8211R_PHY_ID_MASK },\n--\ndrivers/net/phy/davicom.c=210=module_phy_driver(dm91xx_driver);\ndrivers/net/phy/davicom.c-211-\ndrivers/net/phy/davicom.c:212:static const struct mdio_device_id __maybe_unused davicom_tbl[] = {\ndrivers/net/phy/davicom.c-213-\t{ 0x0181b880, 0x0ffffff0 },\n--\ndrivers/net/phy/dp83640.c=1475=MODULE_LICENSE(\"GPL\");\ndrivers/net/phy/dp83640.c-1476-\ndrivers/net/phy/dp83640.c:1477:static const struct mdio_device_id __maybe_unused dp83640_tbl[] = {\ndrivers/net/phy/dp83640.c-1478-\t{ DP83640_PHY_ID, 0xfffffff0 },\n--\ndrivers/net/phy/dp83822.c=1245=module_phy_driver(dp83822_driver);\ndrivers/net/phy/dp83822.c-1246-\ndrivers/net/phy/dp83822.c:1247:static const struct mdio_device_id __maybe_unused dp83822_tbl[] = {\ndrivers/net/phy/dp83822.c-1248-\t{ DP83822_PHY_ID, 0xfffffff0 },\n--\ndrivers/net/phy/dp83848.c=112=static int dp83848_config_init(struct phy_device *phydev)\n--\ndrivers/net/phy/dp83848.c-128-\ndrivers/net/phy/dp83848.c:129:static const struct mdio_device_id __maybe_unused dp83848_tbl[] = {\ndrivers/net/phy/dp83848.c-130-\t{ TI_DP83848C_PHY_ID, 0xfffffff0 },\n--\ndrivers/net/phy/dp83867.c=1222=module_phy_driver(dp83867_driver);\ndrivers/net/phy/dp83867.c-1223-\ndrivers/net/phy/dp83867.c:1224:static const struct mdio_device_id __maybe_unused dp83867_tbl[] = {\ndrivers/net/phy/dp83867.c-1225-\t{ DP83867_PHY_ID, 0xfffffff0 },\n--\ndrivers/net/phy/dp83869.c=939=module_phy_driver(dp83869_driver);\ndrivers/net/phy/dp83869.c-940-\ndrivers/net/phy/dp83869.c:941:static const struct mdio_device_id __maybe_unused dp83869_tbl[] = {\ndrivers/net/phy/dp83869.c-942-\t{ PHY_ID_MATCH_MODEL(DP83869_PHY_ID) },\n--\ndrivers/net/phy/dp83tc811.c=405=module_phy_driver(dp83811_driver);\ndrivers/net/phy/dp83tc811.c-406-\ndrivers/net/phy/dp83tc811.c:407:static const struct mdio_device_id __maybe_unused dp83811_tbl[] = {\ndrivers/net/phy/dp83tc811.c-408-\t{ DP83TC811_PHY_ID, 0xfffffff0 },\n--\ndrivers/net/phy/dp83td510.c=970=module_phy_driver(dp83td510_driver);\ndrivers/net/phy/dp83td510.c-971-\ndrivers/net/phy/dp83td510.c:972:static const struct mdio_device_id __maybe_unused dp83td510_tbl[] = {\ndrivers/net/phy/dp83td510.c-973-\t{ PHY_ID_MATCH_MODEL(DP83TD510E_PHY_ID) },\n--\ndrivers/net/phy/dp83tg720.c=668=module_phy_driver(dp83tg720_driver);\ndrivers/net/phy/dp83tg720.c-669-\ndrivers/net/phy/dp83tg720.c:670:static const struct mdio_device_id __maybe_unused dp83tg720_tbl[] = {\ndrivers/net/phy/dp83tg720.c-671-\t{ PHY_ID_MATCH_MODEL(DP83TG720S_PHY_ID) },\n--\ndrivers/net/phy/et1011c.c=95=module_phy_driver(et1011c_driver);\ndrivers/net/phy/et1011c.c-96-\ndrivers/net/phy/et1011c.c:97:static const struct mdio_device_id __maybe_unused et1011c_tbl[] = {\ndrivers/net/phy/et1011c.c-98-\t{ 0x0282f014, 0xfffffff0 },\n--\ndrivers/net/phy/icplus.c=626=module_phy_driver(icplus_driver);\ndrivers/net/phy/icplus.c-627-\ndrivers/net/phy/icplus.c:628:static const struct mdio_device_id __maybe_unused icplus_tbl[] = {\ndrivers/net/phy/icplus.c-629-\t{ PHY_ID_MATCH_MODEL(IP175C_PHY_ID) },\n--\ndrivers/net/phy/intel-xway.c=771=module_phy_driver(xway_gphy);\ndrivers/net/phy/intel-xway.c-772-\ndrivers/net/phy/intel-xway.c:773:static const struct mdio_device_id __maybe_unused xway_gphy_tbl[] = {\ndrivers/net/phy/intel-xway.c-774-\t{ PHY_ID_PHY11G_1_3, 0xffffffff },\n--\ndrivers/net/phy/lxt.c=349=module_phy_driver(lxt97x_driver);\ndrivers/net/phy/lxt.c-350-\ndrivers/net/phy/lxt.c:351:static const struct mdio_device_id __maybe_unused lxt_tbl[] = {\ndrivers/net/phy/lxt.c-352-\t{ 0x78100000, 0xfffffff0 },\n--\ndrivers/net/phy/marvell-88q2xxx.c=1144=module_phy_driver(mv88q2xxx_driver);\ndrivers/net/phy/marvell-88q2xxx.c-1145-\ndrivers/net/phy/marvell-88q2xxx.c:1146:static const struct mdio_device_id __maybe_unused mv88q2xxx_tbl[] = {\ndrivers/net/phy/marvell-88q2xxx.c-1147-\t{ MARVELL_PHY_ID_88Q2110, MARVELL_PHY_ID_MASK },\n--\ndrivers/net/phy/marvell-88x2222.c=595=module_phy_driver(mv2222_drivers);\ndrivers/net/phy/marvell-88x2222.c-596-\ndrivers/net/phy/marvell-88x2222.c:597:static const struct mdio_device_id __maybe_unused mv2222_tbl[] = {\ndrivers/net/phy/marvell-88x2222.c-598-\t{ MARVELL_PHY_ID_88X2222, MARVELL_PHY_ID_MASK },\n--\ndrivers/net/phy/marvell.c=4206=module_phy_driver(marvell_drivers);\ndrivers/net/phy/marvell.c-4207-\ndrivers/net/phy/marvell.c:4208:static const struct mdio_device_id __maybe_unused marvell_tbl[] = {\ndrivers/net/phy/marvell.c-4209-\t{ MARVELL_PHY_ID_88E1101, MARVELL_PHY_ID_MASK },\n--\ndrivers/net/phy/marvell10g.c=1477=module_phy_driver(mv3310_drivers);\ndrivers/net/phy/marvell10g.c-1478-\ndrivers/net/phy/marvell10g.c:1479:static const struct mdio_device_id __maybe_unused mv3310_tbl[] = {\ndrivers/net/phy/marvell10g.c-1480-\t{ MARVELL_PHY_ID_88X3310, MARVELL_PHY_ID_MASK },\n--\ndrivers/net/phy/mediatek/mtk-2p5ge.c=401=module_phy_driver(mtk_2p5gephy_driver);\ndrivers/net/phy/mediatek/mtk-2p5ge.c-402-\ndrivers/net/phy/mediatek/mtk-2p5ge.c:403:static struct mdio_device_id __maybe_unused mtk_2p5ge_phy_tbl[] = {\ndrivers/net/phy/mediatek/mtk-2p5ge.c-404-\t{ PHY_ID_MATCH_VENDOR(0x00339c00) },\n--\ndrivers/net/phy/mediatek/mtk-fe-soc.c=42=module_phy_driver(mtk_soc_fe_phy_driver);\ndrivers/net/phy/mediatek/mtk-fe-soc.c:43:static const struct mdio_device_id __maybe_unused mtk_soc_fe_phy_tbl[] = {\ndrivers/net/phy/mediatek/mtk-fe-soc.c-44-\t{ PHY_ID_MATCH_EXACT(MTK_FPHY_ID_MT7628) },\n--\ndrivers/net/phy/mediatek/mtk-ge-soc.c=1569=module_phy_driver(mtk_socphy_driver);\ndrivers/net/phy/mediatek/mtk-ge-soc.c-1570-\ndrivers/net/phy/mediatek/mtk-ge-soc.c:1571:static const struct mdio_device_id __maybe_unused mtk_socphy_tbl[] = {\ndrivers/net/phy/mediatek/mtk-ge-soc.c-1572-\t{ PHY_ID_MATCH_EXACT(MTK_GPHY_ID_MT7981) },\n--\ndrivers/net/phy/mediatek/mtk-ge.c=159=module_phy_driver(mtk_gephy_driver);\ndrivers/net/phy/mediatek/mtk-ge.c-160-\ndrivers/net/phy/mediatek/mtk-ge.c:161:static const struct mdio_device_id __maybe_unused mtk_gephy_tbl[] = {\ndrivers/net/phy/mediatek/mtk-ge.c-162-\t{ PHY_ID_MATCH_EXACT(MTK_GPHY_ID_MT7530) },\n--\ndrivers/net/phy/meson-gxl.c=187=static struct phy_driver meson_gxl_phy[] = {\n--\ndrivers/net/phy/meson-gxl.c-223-\ndrivers/net/phy/meson-gxl.c:224:static const struct mdio_device_id __maybe_unused meson_gxl_tbl[] = {\ndrivers/net/phy/meson-gxl.c-225-\t{ PHY_ID_MATCH_VENDOR(0x01814400) },\n--\ndrivers/net/phy/micrel.c=7113=MODULE_LICENSE(\"GPL\");\ndrivers/net/phy/micrel.c-7114-\ndrivers/net/phy/micrel.c:7115:static const struct mdio_device_id __maybe_unused micrel_tbl[] = {\ndrivers/net/phy/micrel.c-7116-\t{ PHY_ID_KSZ9021, 0x000ffffe },\n--\ndrivers/net/phy/microchip.c=589=module_phy_driver(microchip_phy_driver);\ndrivers/net/phy/microchip.c-590-\ndrivers/net/phy/microchip.c:591:static const struct mdio_device_id __maybe_unused microchip_tbl[] = {\ndrivers/net/phy/microchip.c-592-\t{ 0x0007c132, 0xfffffff2 },\n--\ndrivers/net/phy/microchip_t1.c=2165=module_phy_driver(microchip_t1_phy_driver);\ndrivers/net/phy/microchip_t1.c-2166-\ndrivers/net/phy/microchip_t1.c:2167:static struct mdio_device_id __maybe_unused microchip_t1_tbl[] = {\ndrivers/net/phy/microchip_t1.c-2168-\t{ PHY_ID_MATCH_MODEL(PHY_ID_LAN87XX) },\n--\ndrivers/net/phy/microchip_t1s.c=567=module_phy_driver(microchip_t1s_driver);\ndrivers/net/phy/microchip_t1s.c-568-\ndrivers/net/phy/microchip_t1s.c:569:static const struct mdio_device_id __maybe_unused tbl[] = {\ndrivers/net/phy/microchip_t1s.c-570-\t{ PHY_ID_MATCH_EXACT(PHY_ID_LAN867X_REVB1) },\n--\ndrivers/net/phy/motorcomm.c=3200=MODULE_LICENSE(\"GPL\");\ndrivers/net/phy/motorcomm.c-3201-\ndrivers/net/phy/motorcomm.c:3202:static const struct mdio_device_id __maybe_unused motorcomm_tbl[] = {\ndrivers/net/phy/motorcomm.c-3203-\t{ PHY_ID_MATCH_EXACT(PHY_ID_YT8511) },\n--\ndrivers/net/phy/mscc/mscc_main.c=2989=module_phy_driver(vsc85xx_driver);\ndrivers/net/phy/mscc/mscc_main.c-2990-\ndrivers/net/phy/mscc/mscc_main.c:2991:static const struct mdio_device_id __maybe_unused vsc85xx_tbl[] = {\ndrivers/net/phy/mscc/mscc_main.c-2992-\t{ PHY_ID_MATCH_VENDOR(PHY_VENDOR_MSCC) },\n--\ndrivers/net/phy/mxl-86110.c=969=module_phy_driver(mxl_phy_drvs);\ndrivers/net/phy/mxl-86110.c-970-\ndrivers/net/phy/mxl-86110.c:971:static const struct mdio_device_id __maybe_unused mxl_tbl[] = {\ndrivers/net/phy/mxl-86110.c-972-\t{ PHY_ID_MATCH_EXACT(PHY_ID_MXL86110) },\n--\ndrivers/net/phy/mxl-gpy.c=1479=module_phy_driver(gpy_drivers);\ndrivers/net/phy/mxl-gpy.c-1480-\ndrivers/net/phy/mxl-gpy.c:1481:static const struct mdio_device_id __maybe_unused gpy_tbl[] = {\ndrivers/net/phy/mxl-gpy.c-1482-\t{PHY_ID_MATCH_MODEL(PHY_ID_GPY2xx)},\n--\ndrivers/net/phy/national.c=174=MODULE_LICENSE(\"GPL\");\ndrivers/net/phy/national.c-175-\ndrivers/net/phy/national.c:176:static const struct mdio_device_id __maybe_unused ns_tbl[] = {\ndrivers/net/phy/national.c-177-\t{ DP83865_PHY_ID, 0xfffffff0 },\n--\ndrivers/net/phy/ncn26000.c=160=module_phy_driver(ncn26000_driver);\ndrivers/net/phy/ncn26000.c-161-\ndrivers/net/phy/ncn26000.c:162:static const struct mdio_device_id __maybe_unused ncn26000_tbl[] = {\ndrivers/net/phy/ncn26000.c-163-\t{ PHY_ID_MATCH_MODEL(PHY_ID_NCN26000) },\n--\ndrivers/net/phy/nxp-c45-tja11xx.c=2178=module_phy_driver(nxp_c45_driver);\ndrivers/net/phy/nxp-c45-tja11xx.c-2179-\ndrivers/net/phy/nxp-c45-tja11xx.c:2180:static const struct mdio_device_id __maybe_unused nxp_c45_tbl[] = {\ndrivers/net/phy/nxp-c45-tja11xx.c-2181-\t{ PHY_ID_MATCH_MODEL(PHY_ID_TJA_1103) },\n--\ndrivers/net/phy/nxp-cbtx.c=216=module_phy_driver(cbtx_driver);\ndrivers/net/phy/nxp-cbtx.c-217-\ndrivers/net/phy/nxp-cbtx.c:218:static const struct mdio_device_id __maybe_unused cbtx_tbl[] = {\ndrivers/net/phy/nxp-cbtx.c-219-\t{ PHY_ID_MATCH_MODEL(PHY_ID_CBTX_SJA1110) },\n--\ndrivers/net/phy/nxp-tja11xx.c=928=module_phy_driver(tja11xx_driver);\ndrivers/net/phy/nxp-tja11xx.c-929-\ndrivers/net/phy/nxp-tja11xx.c:930:static const struct mdio_device_id __maybe_unused tja11xx_tbl[] = {\ndrivers/net/phy/nxp-tja11xx.c-931-\t{ PHY_ID_MATCH_MODEL(PHY_ID_TJA1100) },\n--\ndrivers/net/phy/qcom/at803x.c=1236=module_phy_driver(at803x_driver);\ndrivers/net/phy/qcom/at803x.c-1237-\ndrivers/net/phy/qcom/at803x.c:1238:static const struct mdio_device_id __maybe_unused atheros_tbl[] = {\ndrivers/net/phy/qcom/at803x.c-1239-\t{ ATH8030_PHY_ID, AT8030_PHY_ID_MASK },\n--\ndrivers/net/phy/qcom/qca807x.c=844=module_phy_driver(qca807x_drivers);\ndrivers/net/phy/qcom/qca807x.c-845-\ndrivers/net/phy/qcom/qca807x.c:846:static const struct mdio_device_id __maybe_unused qca807x_tbl[] = {\ndrivers/net/phy/qcom/qca807x.c-847-\t{ PHY_ID_MATCH_EXACT(PHY_ID_QCA8072) },\n--\ndrivers/net/phy/qcom/qca808x.c=679=module_phy_driver(qca808x_driver);\ndrivers/net/phy/qcom/qca808x.c-680-\ndrivers/net/phy/qcom/qca808x.c:681:static const struct mdio_device_id __maybe_unused qca808x_tbl[] = {\ndrivers/net/phy/qcom/qca808x.c-682-\t{ PHY_ID_MATCH_EXACT(QCA8081_PHY_ID) },\n--\ndrivers/net/phy/qcom/qca83xx.c=260=module_phy_driver(qca83xx_driver);\ndrivers/net/phy/qcom/qca83xx.c-261-\ndrivers/net/phy/qcom/qca83xx.c:262:static const struct mdio_device_id __maybe_unused qca83xx_tbl[] = {\ndrivers/net/phy/qcom/qca83xx.c-263-\t{ PHY_ID_MATCH_EXACT(QCA8337_PHY_ID) },\n--\ndrivers/net/phy/qsemi.c=156=module_phy_driver(qs6612_driver);\ndrivers/net/phy/qsemi.c-157-\ndrivers/net/phy/qsemi.c:158:static const struct mdio_device_id __maybe_unused qs6612_tbl[] = {\ndrivers/net/phy/qsemi.c-159-\t{ 0x00181440, 0xfffffff0 },\n--\ndrivers/net/phy/realtek/realtek_main.c=3365=module_phy_driver(realtek_drvs);\ndrivers/net/phy/realtek/realtek_main.c-3366-\ndrivers/net/phy/realtek/realtek_main.c:3367:static const struct mdio_device_id __maybe_unused realtek_tbl[] = {\ndrivers/net/phy/realtek/realtek_main.c-3368-\t{ PHY_ID_MATCH_VENDOR(0x001cc800) },\n--\ndrivers/net/phy/rockchip.c=189=module_phy_driver(rockchip_phy_driver);\ndrivers/net/phy/rockchip.c-190-\ndrivers/net/phy/rockchip.c:191:static const struct mdio_device_id __maybe_unused rockchip_phy_tbl[] = {\ndrivers/net/phy/rockchip.c-192-\t{ INTERNAL_EPHY_ID, 0xfffffff0 },\n--\ndrivers/net/phy/smsc.c=887=MODULE_LICENSE(\"GPL\");\ndrivers/net/phy/smsc.c-888-\ndrivers/net/phy/smsc.c:889:static const struct mdio_device_id __maybe_unused smsc_tbl[] = {\ndrivers/net/phy/smsc.c-890-\t{ 0x0007c0a0, 0xfffffff0 },\n--\ndrivers/net/phy/ste10Xp.c=125=module_phy_driver(ste10xp_pdriver);\ndrivers/net/phy/ste10Xp.c-126-\ndrivers/net/phy/ste10Xp.c:127:static const struct mdio_device_id __maybe_unused ste10Xp_tbl[] = {\ndrivers/net/phy/ste10Xp.c-128-\t{ STE101P_PHY_ID, 0xfffffff0 },\n--\ndrivers/net/phy/teranetics.c=89=module_phy_driver(teranetics_driver);\ndrivers/net/phy/teranetics.c-90-\ndrivers/net/phy/teranetics.c:91:static const struct mdio_device_id __maybe_unused teranetics_tbl[] = {\ndrivers/net/phy/teranetics.c-92-\t{ PHY_ID_TN2020, 0xffffffff },\n--\ndrivers/net/phy/uPD60620.c=91=module_phy_driver(upd60620_driver);\ndrivers/net/phy/uPD60620.c-92-\ndrivers/net/phy/uPD60620.c:93:static const struct mdio_device_id __maybe_unused upd60620_tbl[] = {\ndrivers/net/phy/uPD60620.c-94-\t{ UPD60620_PHY_ID, 0xfffffffe },\n--\ndrivers/net/phy/vitesse.c=716=module_phy_driver(vsc82xx_driver);\ndrivers/net/phy/vitesse.c-717-\ndrivers/net/phy/vitesse.c:718:static const struct mdio_device_id __maybe_unused vitesse_tbl[] = {\ndrivers/net/phy/vitesse.c-719-\t{ PHY_ID_VSC8234, 0x000ffff0 },\n"
}

gemini-3.8-flash

null

null

							input: 36948
							output: 28
							thoughts: 766
						

**Analyzing the Patch for Fuzzing Suitability**

Okay, let's break this down. We have a patch touching `m88e1318_set_wol` within the `drivers/net/phy/marvell.c` file. Specifically, it's modifying that function to disable Wake-on-LAN (WoL) interrupt setup when certain WoL options aren't enabled. The code snippet involves register writes to disable specific interrupt enable bits related to WoL. No surprises there.

The crucial question, as always with fuzzing, is reachability. The triage instructions emphasize that reachability is *the* primary gate. Can this code actually *execute* within a standard virtualized environment like GCE or QEMU using emulated devices? This is where the real work begins.

We need to consider Section 1 and 2 of the triage instructions. The patch modifies code. Is the modified code unreachable, per Section 2?

My initial thought is that `drivers/net/phy/marvell.c` is a PHY driver. I immediately recognize that this is specifically for discrete PHY chips like the Marvell Alaska series (e.g., 88E1318S, 88E1510). These are hardware transceivers, not software-defined network interfaces. So, can this `m88e1318_set_wol` function be reached in standard QEMU or GCE environments?

Now, the important point.  Let's consider the negative criteria. Is this Structurally unreachable hardware? More specifically, does this driver rely on hardware not emulated in QEMU? Yes, because it uses discrete PHYs. Are vendor-specific PCIe switches, or SmartNICs, or GPU drivers, or drivers such as the `mlxsw`, `pds_core`, `qed`, `ionic`, or `amdgpu` involved? No.

Therefore, the critical question becomes: Is there any *practical* way to instantiate a Marvell PHY (like the 88E1318S or 88E1510) within a standard QEMU or GCE setup? Can we create a virtual MDIO bus or PHY to simulate this? I need to investigate. I'll need to check how the MDIO bus is registered and see if any mock or dummy PHY implementations exist in the kernel, or if there is a way to set up a virtual or emulated MDIO bus for testing. Without a path to instantiate the hardware in a standard virtualized environment, this is essentially an unreachable code path. If that's the case, then this patch would not be worth fuzzing, based on the reachability criterion.

{
  "Expression": "mdio.*register",
  "PathPrefix": "drivers/net/"
}

{
  "Output": "\nFull output is too long, showing 500 out of 2645 lines.\nUse more precise expression if possible.\n\ndrivers/net/dsa/bcm_sf2.c=554=static void bcm_sf2_identify_ports(struct bcm_sf2_priv *priv,\n--\ndrivers/net/dsa/bcm_sf2.c-606-\ndrivers/net/dsa/bcm_sf2.c:607:static int bcm_sf2_mdio_register(struct dsa_switch *ds)\ndrivers/net/dsa/bcm_sf2.c-608-{\n--\ndrivers/net/dsa/bcm_sf2.c-683-\ndrivers/net/dsa/bcm_sf2.c:684:\terr = mdiobus_register(priv-\u003euser_mii_bus);\ndrivers/net/dsa/bcm_sf2.c-685-\tif (err)\n--\ndrivers/net/dsa/bcm_sf2.c-700-\ndrivers/net/dsa/bcm_sf2.c:701:static void bcm_sf2_mdio_unregister(struct bcm_sf2_priv *priv)\ndrivers/net/dsa/bcm_sf2.c-702-{\ndrivers/net/dsa/bcm_sf2.c:703:\tmdiobus_unregister(priv-\u003euser_mii_bus);\ndrivers/net/dsa/bcm_sf2.c-704-\tmdiobus_free(priv-\u003euser_mii_bus);\n--\ndrivers/net/dsa/bcm_sf2.c=1365=static int bcm_sf2_sw_probe(struct platform_device *pdev)\n--\ndrivers/net/dsa/bcm_sf2.c-1492-\ndrivers/net/dsa/bcm_sf2.c:1493:\tret = bcm_sf2_mdio_register(ds);\ndrivers/net/dsa/bcm_sf2.c-1494-\tif (ret) {\n--\ndrivers/net/dsa/bcm_sf2.c-1561-out_mdio:\ndrivers/net/dsa/bcm_sf2.c:1562:\tbcm_sf2_mdio_unregister(priv);\ndrivers/net/dsa/bcm_sf2.c-1563-out_clk_mdiv:\n--\ndrivers/net/dsa/bcm_sf2.c=1570=static void bcm_sf2_sw_remove(struct platform_device *pdev)\n--\ndrivers/net/dsa/bcm_sf2.c-1581-\tbcm_sf2_cfp_exit(priv-\u003edev-\u003eds);\ndrivers/net/dsa/bcm_sf2.c:1582:\tbcm_sf2_mdio_unregister(priv);\ndrivers/net/dsa/bcm_sf2.c-1583-\tclk_disable_unprepare(priv-\u003eclk_mdiv);\n--\ndrivers/net/dsa/dsa_loop.c=446=static int __init dsa_loop_create_switch_mdiodev(void)\n--\ndrivers/net/dsa/dsa_loop.c-473-\ndrivers/net/dsa/dsa_loop.c:474:\tret = mdio_device_register(switch_mdiodev);\ndrivers/net/dsa/dsa_loop.c-475-\tif (ret)\n--\ndrivers/net/dsa/dsa_loop.c=482=static int __init dsa_loop_init(void)\n--\ndrivers/net/dsa/dsa_loop.c-493-\ndrivers/net/dsa/dsa_loop.c:494:\tret = mdio_driver_register(\u0026dsa_loop_drv);\ndrivers/net/dsa/dsa_loop.c-495-\tif (ret) {\n--\ndrivers/net/dsa/dsa_loop.c=505=static void __exit dsa_loop_exit(void)\ndrivers/net/dsa/dsa_loop.c-506-{\ndrivers/net/dsa/dsa_loop.c:507:\tmdio_driver_unregister(\u0026dsa_loop_drv);\ndrivers/net/dsa/dsa_loop.c-508-\tdsa_loop_phydevs_unregister();\n--\ndrivers/net/dsa/lantiq/lantiq_gswip_common.c=187=static int gswip_mdio(struct gswip_priv *priv)\n--\ndrivers/net/dsa/lantiq/lantiq_gswip_common.c-213-\ndrivers/net/dsa/lantiq/lantiq_gswip_common.c:214:\terr = devm_of_mdiobus_register(dev, bus, mdio_np);\ndrivers/net/dsa/lantiq/lantiq_gswip_common.c-215-\n--\ndrivers/net/dsa/microchip/ksz8.c=2385=static int ksz8463_setup(struct dsa_switch *ds)\n--\ndrivers/net/dsa/microchip/ksz8.c-2488-\ndrivers/net/dsa/microchip/ksz8.c:2489:\tret = ksz_mdio_register(dev);\ndrivers/net/dsa/microchip/ksz8.c-2490-\tif (ret \u003c 0) {\n--\ndrivers/net/dsa/microchip/ksz8.c=2645=static int ksz8_setup(struct dsa_switch *ds)\n--\ndrivers/net/dsa/microchip/ksz8.c-2785-\ndrivers/net/dsa/microchip/ksz8.c:2786:\tret = ksz_mdio_register(dev);\ndrivers/net/dsa/microchip/ksz8.c-2787-\tif (ret \u003c 0) {\n--\ndrivers/net/dsa/microchip/ksz9477.c=321=static int ksz9477_pcs_create(struct ksz_device *dev)\n--\ndrivers/net/dsa/microchip/ksz9477.c-341-\ndrivers/net/dsa/microchip/ksz9477.c:342:\tret = devm_mdiobus_register(dev-\u003edev, bus);\ndrivers/net/dsa/microchip/ksz9477.c-343-\tif (ret)\n--\ndrivers/net/dsa/microchip/ksz9477.c=1670=static int ksz9477_setup(struct dsa_switch *ds)\n--\ndrivers/net/dsa/microchip/ksz9477.c-1791-\ndrivers/net/dsa/microchip/ksz9477.c:1792:\tret = ksz_mdio_register(dev);\ndrivers/net/dsa/microchip/ksz9477.c-1793-\tif (ret \u003c 0) {\n--\ndrivers/net/dsa/microchip/ksz_common.c=2139=int ksz_sw_mdio_write(struct mii_bus *bus, int addr, int regnum, u16 val)\n--\ndrivers/net/dsa/microchip/ksz_common.c-2147-/**\ndrivers/net/dsa/microchip/ksz_common.c:2148: * ksz_parent_mdio_read - Read data from a PHY register on the parent MDIO bus.\ndrivers/net/dsa/microchip/ksz_common.c-2149- * @bus: MDIO bus structure.\n--\ndrivers/net/dsa/microchip/ksz_common.c=2160=int ksz_parent_mdio_read(struct mii_bus *bus, int addr, int regnum)\n--\ndrivers/net/dsa/microchip/ksz_common.c-2167-/**\ndrivers/net/dsa/microchip/ksz_common.c:2168: * ksz_parent_mdio_write - Write data to a PHY register on the parent MDIO bus.\ndrivers/net/dsa/microchip/ksz_common.c-2169- * @bus: MDIO bus structure.\n--\ndrivers/net/dsa/microchip/ksz_common.c=2288=int ksz_parse_dt_phy_config(struct ksz_device *dev, struct mii_bus *bus,\n--\ndrivers/net/dsa/microchip/ksz_common.c-2344-/**\ndrivers/net/dsa/microchip/ksz_common.c:2345: * ksz_mdio_register - Register and configure the MDIO bus for the KSZ device.\ndrivers/net/dsa/microchip/ksz_common.c-2346- * @dev: Pointer to the KSZ device structure.\n--\ndrivers/net/dsa/microchip/ksz_common.c-2355- */\ndrivers/net/dsa/microchip/ksz_common.c:2356:int ksz_mdio_register(struct ksz_device *dev)\ndrivers/net/dsa/microchip/ksz_common.c-2357-{\n--\ndrivers/net/dsa/microchip/ksz_common.c-2427-\ndrivers/net/dsa/microchip/ksz_common.c:2428:\tret = devm_of_mdiobus_register(ds-\u003edev, bus, mdio_np);\ndrivers/net/dsa/microchip/ksz_common.c-2429-\tif (ret) {\n--\ndrivers/net/dsa/microchip/ksz_common.h=512=int ksz_parent_mdio_write(struct mii_bus *bus, int addr, int regnum, u16 val);\ndrivers/net/dsa/microchip/ksz_common.h:513:int ksz_mdio_register(struct ksz_device *dev);\ndrivers/net/dsa/microchip/ksz_common.h-514-void ksz_irq_bus_lock(struct irq_data *d);\n--\ndrivers/net/dsa/microchip/lan937x_main.c=666=static int lan937x_switch_init(struct ksz_device *dev)\n--\ndrivers/net/dsa/microchip/lan937x_main.c-673-/**\ndrivers/net/dsa/microchip/lan937x_main.c:674: * lan937x_mdio_register - Register and configure the MDIO bus for the LAN937x.\ndrivers/net/dsa/microchip/lan937x_main.c-675- * @dev: Pointer to the KSZ device structure.\n--\ndrivers/net/dsa/microchip/lan937x_main.c-684- */\ndrivers/net/dsa/microchip/lan937x_main.c:685:static int lan937x_mdio_register(struct ksz_device *dev)\ndrivers/net/dsa/microchip/lan937x_main.c-686-{\n--\ndrivers/net/dsa/microchip/lan937x_main.c-755-\ndrivers/net/dsa/microchip/lan937x_main.c:756:\tret = devm_of_mdiobus_register(ds-\u003edev, bus, mdio_np);\ndrivers/net/dsa/microchip/lan937x_main.c-757-\tif (ret)\n--\ndrivers/net/dsa/microchip/lan937x_main.c=768=static int lan937x_setup(struct dsa_switch *ds)\n--\ndrivers/net/dsa/microchip/lan937x_main.c-876-\ndrivers/net/dsa/microchip/lan937x_main.c:877:\tret = lan937x_mdio_register(dev);\ndrivers/net/dsa/microchip/lan937x_main.c-878-\tif (ret \u003c 0) {\n--\ndrivers/net/dsa/motorcomm/chip.c=389=yt921x_mbus_int_init(struct yt921x_priv *priv, struct device_node *mnp)\n--\ndrivers/net/dsa/motorcomm/chip.c-406-\ndrivers/net/dsa/motorcomm/chip.c:407:\tres = devm_of_mdiobus_register(dev, mbus, mnp);\ndrivers/net/dsa/motorcomm/chip.c-408-\tif (res)\n--\ndrivers/net/dsa/motorcomm/chip.c=520=yt921x_mbus_ext_init(struct yt921x_priv *priv, struct device_node *mnp)\n--\ndrivers/net/dsa/motorcomm/chip.c-537-\ndrivers/net/dsa/motorcomm/chip.c:538:\tres = devm_of_mdiobus_register(dev, mbus, mnp);\ndrivers/net/dsa/motorcomm/chip.c-539-\tif (res)\n--\ndrivers/net/dsa/mt7530.c=2337=mt7530_setup_mdio(struct mt7530_priv *priv)\n--\ndrivers/net/dsa/mt7530.c-2372-\ndrivers/net/dsa/mt7530.c:2373:\tret = devm_of_mdiobus_register(dev, bus, mnp);\ndrivers/net/dsa/mt7530.c-2374-\tif (ret) {\n--\ndrivers/net/dsa/mt7628.c=242=static int mt7628_setup_internal_mdio(struct dsa_switch *ds)\n--\ndrivers/net/dsa/mt7628.c-261-\ndrivers/net/dsa/mt7628.c:262:\treturn devm_mdiobus_register(dev, bus);\ndrivers/net/dsa/mt7628.c-263-}\n--\ndrivers/net/dsa/mv88e6xxx/chip.c=3825=static int mv88e6xxx_mdio_write_c45(struct mii_bus *bus, int phy, int devad,\n--\ndrivers/net/dsa/mv88e6xxx/chip.c-3841-\ndrivers/net/dsa/mv88e6xxx/chip.c:3842:static int mv88e6xxx_mdio_register(struct mv88e6xxx_chip *chip,\ndrivers/net/dsa/mv88e6xxx/chip.c-3843-\t\t\t\t   struct device_node *np,\n--\ndrivers/net/dsa/mv88e6xxx/chip.c-3895-\ndrivers/net/dsa/mv88e6xxx/chip.c:3896:\terr = of_mdiobus_register(bus, np);\ndrivers/net/dsa/mv88e6xxx/chip.c-3897-\tif (err) {\n--\ndrivers/net/dsa/mv88e6xxx/chip.c-3914-\ndrivers/net/dsa/mv88e6xxx/chip.c:3915:static void mv88e6xxx_mdios_unregister(struct mv88e6xxx_chip *chip)\ndrivers/net/dsa/mv88e6xxx/chip.c-3916-\n--\ndrivers/net/dsa/mv88e6xxx/chip.c-3926-\ndrivers/net/dsa/mv88e6xxx/chip.c:3927:\t\tmdiobus_unregister(bus);\ndrivers/net/dsa/mv88e6xxx/chip.c-3928-\t\tmdiobus_free(bus);\n--\ndrivers/net/dsa/mv88e6xxx/chip.c-3931-\ndrivers/net/dsa/mv88e6xxx/chip.c:3932:static int mv88e6xxx_mdios_register(struct mv88e6xxx_chip *chip)\ndrivers/net/dsa/mv88e6xxx/chip.c-3933-{\n--\ndrivers/net/dsa/mv88e6xxx/chip.c-3942-\tchild = of_get_child_by_name(np, \"mdio\");\ndrivers/net/dsa/mv88e6xxx/chip.c:3943:\terr = mv88e6xxx_mdio_register(chip, child, false);\ndrivers/net/dsa/mv88e6xxx/chip.c-3944-\tof_node_put(child);\n--\ndrivers/net/dsa/mv88e6xxx/chip.c-3954-\t\t\t    child, \"marvell,mv88e6xxx-mdio-external\")) {\ndrivers/net/dsa/mv88e6xxx/chip.c:3955:\t\t\terr = mv88e6xxx_mdio_register(chip, child, true);\ndrivers/net/dsa/mv88e6xxx/chip.c-3956-\t\t\tif (err) {\ndrivers/net/dsa/mv88e6xxx/chip.c:3957:\t\t\t\tmv88e6xxx_mdios_unregister(chip);\ndrivers/net/dsa/mv88e6xxx/chip.c-3958-\t\t\t\tof_node_put(child);\n--\ndrivers/net/dsa/mv88e6xxx/chip.c=3975=static void mv88e6xxx_teardown(struct dsa_switch *ds)\n--\ndrivers/net/dsa/mv88e6xxx/chip.c-3984-\tmv88e6xxx_flower_teardown(chip);\ndrivers/net/dsa/mv88e6xxx/chip.c:3985:\tmv88e6xxx_mdios_unregister(chip);\ndrivers/net/dsa/mv88e6xxx/chip.c-3986-}\n--\ndrivers/net/dsa/mv88e6xxx/chip.c=3988=static int mv88e6xxx_setup(struct dsa_switch *ds)\n--\ndrivers/net/dsa/mv88e6xxx/chip.c-3994-\ndrivers/net/dsa/mv88e6xxx/chip.c:3995:\terr = mv88e6xxx_mdios_register(chip);\ndrivers/net/dsa/mv88e6xxx/chip.c-3996-\tif (err)\n--\ndrivers/net/dsa/mv88e6xxx/chip.c-4156-\tmv88e6xxx_ptp_free(chip);\ndrivers/net/dsa/mv88e6xxx/chip.c:4157:\tmv88e6xxx_mdios_unregister(chip);\ndrivers/net/dsa/mv88e6xxx/chip.c-4158-\n--\ndrivers/net/dsa/mxl862xx/mxl862xx.c=267=static int mxl862xx_setup_mdio(struct dsa_switch *ds)\n--\ndrivers/net/dsa/mxl862xx/mxl862xx.c-292-\ndrivers/net/dsa/mxl862xx/mxl862xx.c:293:\tret = devm_of_mdiobus_register(dev, bus, mdio_np);\ndrivers/net/dsa/mxl862xx/mxl862xx.c-294-\tof_node_put(mdio_np);\n--\ndrivers/net/dsa/netc/netc_main.c=149=static int netc_port_create_emdio_bus(struct netc_port *np,\n--\ndrivers/net/dsa/netc/netc_main.c-179-\ndrivers/net/dsa/netc/netc_main.c:180:\terr = devm_of_mdiobus_register(dev, bus, node);\ndrivers/net/dsa/netc/netc_main.c-181-\tif (err)\n--\ndrivers/net/dsa/ocelot/felix_vsc9959.c=957=static int vsc9959_mdio_bus_alloc(struct ocelot *ocelot)\n--\ndrivers/net/dsa/ocelot/felix_vsc9959.c-1013-\t/* Needed in order to initialize the bus mutex lock */\ndrivers/net/dsa/ocelot/felix_vsc9959.c:1014:\trc = mdiobus_register(bus);\ndrivers/net/dsa/ocelot/felix_vsc9959.c-1015-\tif (rc \u003c 0) {\n--\ndrivers/net/dsa/ocelot/felix_vsc9959.c=1045=static void vsc9959_mdio_bus_free(struct ocelot *ocelot)\n--\ndrivers/net/dsa/ocelot/felix_vsc9959.c-1055-\t}\ndrivers/net/dsa/ocelot/felix_vsc9959.c:1056:\tmdiobus_unregister(felix-\u003eimdio);\ndrivers/net/dsa/ocelot/felix_vsc9959.c-1057-\tmdiobus_free(felix-\u003eimdio);\n--\ndrivers/net/dsa/ocelot/seville_vsc9953.c=878=static int vsc9953_mdio_bus_alloc(struct ocelot *ocelot)\n--\ndrivers/net/dsa/ocelot/seville_vsc9953.c-903-\t/* Needed in order to initialize the bus mutex lock */\ndrivers/net/dsa/ocelot/seville_vsc9953.c:904:\trc = devm_of_mdiobus_register(dev, bus, NULL);\ndrivers/net/dsa/ocelot/seville_vsc9953.c-905-\tif (rc \u003c 0) {\n--\ndrivers/net/dsa/ocelot/seville_vsc9953.c=935=static void vsc9953_mdio_bus_free(struct ocelot *ocelot)\n--\ndrivers/net/dsa/ocelot/seville_vsc9953.c-946-\ndrivers/net/dsa/ocelot/seville_vsc9953.c:947:\t/* mdiobus_unregister and mdiobus_free handled by devres */\ndrivers/net/dsa/ocelot/seville_vsc9953.c-948-}\n--\ndrivers/net/dsa/qca/ar9331.c-147-/* In case of Page Address mode, Bit[18:9] of 32 bit register address should be\ndrivers/net/dsa/qca/ar9331.c:148: * written to bits[9:0] of mdio data register.\ndrivers/net/dsa/qca/ar9331.c-149- */\n--\ndrivers/net/dsa/qca/ar9331.c=357=static int ar9331_sw_mbus_init(struct ar9331_sw_priv *priv)\n--\ndrivers/net/dsa/qca/ar9331.c-381-\ndrivers/net/dsa/qca/ar9331.c:382:\tret = devm_of_mdiobus_register(dev, mbus, mnp);\ndrivers/net/dsa/qca/ar9331.c-383-\tof_node_put(mnp);\n--\ndrivers/net/dsa/qca/qca8k-8xxx.c=946=static int\ndrivers/net/dsa/qca/qca8k-8xxx.c:947:qca8k_mdio_register(struct qca8k_priv *priv)\ndrivers/net/dsa/qca/qca8k-8xxx.c-948-{\n--\ndrivers/net/dsa/qca/qca8k-8xxx.c-986-\ndrivers/net/dsa/qca/qca8k-8xxx.c:987:\tret = devm_of_mdiobus_register(dev, bus, mdio);\ndrivers/net/dsa/qca/qca8k-8xxx.c-988-\n--\ndrivers/net/dsa/qca/qca8k-8xxx.c=995=qca8k_setup_mdio_bus(struct qca8k_priv *priv)\n--\ndrivers/net/dsa/qca/qca8k-8xxx.c-1059-\ndrivers/net/dsa/qca/qca8k-8xxx.c:1060:\treturn qca8k_mdio_register(priv);\ndrivers/net/dsa/qca/qca8k-8xxx.c-1061-}\n--\ndrivers/net/dsa/realtek/realtek-mdio.h-7-\ndrivers/net/dsa/realtek/realtek-mdio.h:8:static inline int realtek_mdio_driver_register(struct mdio_driver *drv)\ndrivers/net/dsa/realtek/realtek-mdio.h-9-{\ndrivers/net/dsa/realtek/realtek-mdio.h:10:\treturn mdio_driver_register(drv);\ndrivers/net/dsa/realtek/realtek-mdio.h-11-}\ndrivers/net/dsa/realtek/realtek-mdio.h-12-\ndrivers/net/dsa/realtek/realtek-mdio.h:13:static inline void realtek_mdio_driver_unregister(struct mdio_driver *drv)\ndrivers/net/dsa/realtek/realtek-mdio.h-14-{\ndrivers/net/dsa/realtek/realtek-mdio.h:15:\tmdio_driver_unregister(drv);\ndrivers/net/dsa/realtek/realtek-mdio.h-16-}\n--\ndrivers/net/dsa/realtek/realtek-mdio.h=20=void realtek_mdio_shutdown(struct mdio_device *mdiodev);\n--\ndrivers/net/dsa/realtek/realtek-mdio.h-23-\ndrivers/net/dsa/realtek/realtek-mdio.h:24:static inline int realtek_mdio_driver_register(struct mdio_driver *drv)\ndrivers/net/dsa/realtek/realtek-mdio.h-25-{\n--\ndrivers/net/dsa/realtek/realtek-mdio.h-28-\ndrivers/net/dsa/realtek/realtek-mdio.h:29:static inline void realtek_mdio_driver_unregister(struct mdio_driver *drv)\ndrivers/net/dsa/realtek/realtek-mdio.h-30-{\n--\ndrivers/net/dsa/realtek/rtl8365mb_main.c=3379=static int rtl8365mb_init(void)\n--\ndrivers/net/dsa/realtek/rtl8365mb_main.c-3382-\ndrivers/net/dsa/realtek/rtl8365mb_main.c:3383:\tret = realtek_mdio_driver_register(\u0026rtl8365mb_mdio_driver);\ndrivers/net/dsa/realtek/rtl8365mb_main.c-3384-\tif (ret)\n--\ndrivers/net/dsa/realtek/rtl8365mb_main.c-3388-\tif (ret) {\ndrivers/net/dsa/realtek/rtl8365mb_main.c:3389:\t\trealtek_mdio_driver_unregister(\u0026rtl8365mb_mdio_driver);\ndrivers/net/dsa/realtek/rtl8365mb_main.c-3390-\t\treturn ret;\n--\ndrivers/net/dsa/realtek/rtl8365mb_main.c=3397=static void __exit rtl8365mb_exit(void)\n--\ndrivers/net/dsa/realtek/rtl8365mb_main.c-3399-\trealtek_smi_driver_unregister(\u0026rtl8365mb_smi_driver);\ndrivers/net/dsa/realtek/rtl8365mb_main.c:3400:\trealtek_mdio_driver_unregister(\u0026rtl8365mb_mdio_driver);\ndrivers/net/dsa/realtek/rtl8365mb_main.c-3401-}\n--\ndrivers/net/dsa/realtek/rtl8366rb.c=1866=static int rtl8366rb_init(void)\n--\ndrivers/net/dsa/realtek/rtl8366rb.c-1869-\ndrivers/net/dsa/realtek/rtl8366rb.c:1870:\tret = realtek_mdio_driver_register(\u0026rtl8366rb_mdio_driver);\ndrivers/net/dsa/realtek/rtl8366rb.c-1871-\tif (ret)\n--\ndrivers/net/dsa/realtek/rtl8366rb.c-1875-\tif (ret) {\ndrivers/net/dsa/realtek/rtl8366rb.c:1876:\t\trealtek_mdio_driver_unregister(\u0026rtl8366rb_mdio_driver);\ndrivers/net/dsa/realtek/rtl8366rb.c-1877-\t\treturn ret;\n--\ndrivers/net/dsa/realtek/rtl8366rb.c=1884=static void __exit rtl8366rb_exit(void)\n--\ndrivers/net/dsa/realtek/rtl8366rb.c-1886-\trealtek_smi_driver_unregister(\u0026rtl8366rb_smi_driver);\ndrivers/net/dsa/realtek/rtl8366rb.c:1887:\trealtek_mdio_driver_unregister(\u0026rtl8366rb_mdio_driver);\ndrivers/net/dsa/realtek/rtl8366rb.c-1888-}\n--\ndrivers/net/dsa/realtek/rtl83xx.c=57=static int rtl83xx_user_mdio_write(struct mii_bus *bus, int addr, int regnum,\n--\ndrivers/net/dsa/realtek/rtl83xx.c-65-/**\ndrivers/net/dsa/realtek/rtl83xx.c:66: * rtl83xx_setup_user_mdio() - register the user mii bus driver\ndrivers/net/dsa/realtek/rtl83xx.c-67- * @ds: DSA switch associated with this user_mii_bus\n--\ndrivers/net/dsa/realtek/rtl83xx.c=75=int rtl83xx_setup_user_mdio(struct dsa_switch *ds)\n--\ndrivers/net/dsa/realtek/rtl83xx.c-100-\ndrivers/net/dsa/realtek/rtl83xx.c:101:\tret = devm_of_mdiobus_register(priv-\u003edev, bus, mdio_np);\ndrivers/net/dsa/realtek/rtl83xx.c-102-\tif (ret) {\n--\ndrivers/net/dsa/rzn1_a5psw.c=1117=static int a5psw_probe_mdio(struct a5psw *a5psw, struct device_node *node)\n--\ndrivers/net/dsa/rzn1_a5psw.c-1143-\ndrivers/net/dsa/rzn1_a5psw.c:1144:\treturn devm_of_mdiobus_register(dev, bus, node);\ndrivers/net/dsa/rzn1_a5psw.c-1145-}\n--\ndrivers/net/dsa/sja1105/sja1105.h=307=void sja1105_frame_memory_partitioning(struct sja1105_private *priv);\n--\ndrivers/net/dsa/sja1105/sja1105.h-309-/* From sja1105_mdio.c */\ndrivers/net/dsa/sja1105/sja1105.h:310:int sja1105_mdiobus_register(struct dsa_switch *ds);\ndrivers/net/dsa/sja1105/sja1105.h:311:void sja1105_mdiobus_unregister(struct dsa_switch *ds);\ndrivers/net/dsa/sja1105/sja1105.h-312-int sja1105_pcs_mdio_read_c45(struct mii_bus *bus, int phy, int mmd, int reg);\n--\ndrivers/net/dsa/sja1105/sja1105_main.c=3026=static int sja1105_setup(struct dsa_switch *ds)\n--\ndrivers/net/dsa/sja1105/sja1105_main.c-3067-\ndrivers/net/dsa/sja1105/sja1105_main.c:3068:\trc = sja1105_mdiobus_register(ds);\ndrivers/net/dsa/sja1105/sja1105_main.c-3069-\tif (rc \u003c 0) {\n--\ndrivers/net/dsa/sja1105/sja1105_main.c-3076-\tif (rc \u003c 0)\ndrivers/net/dsa/sja1105/sja1105_main.c:3077:\t\tgoto out_mdiobus_unregister;\ndrivers/net/dsa/sja1105/sja1105_main.c-3078-\n--\ndrivers/net/dsa/sja1105/sja1105_main.c-3106-\tsja1105_devlink_teardown(ds);\ndrivers/net/dsa/sja1105/sja1105_main.c:3107:out_mdiobus_unregister:\ndrivers/net/dsa/sja1105/sja1105_main.c:3108:\tsja1105_mdiobus_unregister(ds);\ndrivers/net/dsa/sja1105/sja1105_main.c-3109-out_ptp_clock_unregister:\n--\ndrivers/net/dsa/sja1105/sja1105_main.c=3120=static void sja1105_teardown(struct dsa_switch *ds)\n--\ndrivers/net/dsa/sja1105/sja1105_main.c-3128-\tsja1105_devlink_teardown(ds);\ndrivers/net/dsa/sja1105/sja1105_main.c:3129:\tsja1105_mdiobus_unregister(ds);\ndrivers/net/dsa/sja1105/sja1105_main.c-3130-\tsja1105_ptp_clock_unregister(ds);\n--\ndrivers/net/dsa/sja1105/sja1105_mdio.c=246=static int sja1105_base_tx_mdio_write(struct mii_bus *bus, int phy, int reg,\n--\ndrivers/net/dsa/sja1105/sja1105_mdio.c-257-\ndrivers/net/dsa/sja1105/sja1105_mdio.c:258:static int sja1105_mdiobus_base_tx_register(struct sja1105_private *priv,\ndrivers/net/dsa/sja1105/sja1105_mdio.c-259-\t\t\t\t\t    struct device_node *mdio_node)\n--\ndrivers/net/dsa/sja1105/sja1105_mdio.c-287-\ndrivers/net/dsa/sja1105/sja1105_mdio.c:288:\trc = of_mdiobus_register(bus, np);\ndrivers/net/dsa/sja1105/sja1105_mdio.c-289-\tif (rc) {\n--\ndrivers/net/dsa/sja1105/sja1105_mdio.c-301-\ndrivers/net/dsa/sja1105/sja1105_mdio.c:302:static void sja1105_mdiobus_base_tx_unregister(struct sja1105_private *priv)\ndrivers/net/dsa/sja1105/sja1105_mdio.c-303-{\n--\ndrivers/net/dsa/sja1105/sja1105_mdio.c-306-\ndrivers/net/dsa/sja1105/sja1105_mdio.c:307:\tmdiobus_unregister(priv-\u003emdio_base_tx);\ndrivers/net/dsa/sja1105/sja1105_mdio.c-308-\tmdiobus_free(priv-\u003emdio_base_tx);\n--\ndrivers/net/dsa/sja1105/sja1105_mdio.c-311-\ndrivers/net/dsa/sja1105/sja1105_mdio.c:312:static int sja1105_mdiobus_base_t1_register(struct sja1105_private *priv,\ndrivers/net/dsa/sja1105/sja1105_mdio.c-313-\t\t\t\t\t    struct device_node *mdio_node)\n--\ndrivers/net/dsa/sja1105/sja1105_mdio.c-343-\ndrivers/net/dsa/sja1105/sja1105_mdio.c:344:\trc = of_mdiobus_register(bus, np);\ndrivers/net/dsa/sja1105/sja1105_mdio.c-345-\tif (rc) {\n--\ndrivers/net/dsa/sja1105/sja1105_mdio.c-357-\ndrivers/net/dsa/sja1105/sja1105_mdio.c:358:static void sja1105_mdiobus_base_t1_unregister(struct sja1105_private *priv)\ndrivers/net/dsa/sja1105/sja1105_mdio.c-359-{\n--\ndrivers/net/dsa/sja1105/sja1105_mdio.c-362-\ndrivers/net/dsa/sja1105/sja1105_mdio.c:363:\tmdiobus_unregister(priv-\u003emdio_base_t1);\ndrivers/net/dsa/sja1105/sja1105_mdio.c-364-\tmdiobus_free(priv-\u003emdio_base_t1);\n--\ndrivers/net/dsa/sja1105/sja1105_mdio.c-367-\ndrivers/net/dsa/sja1105/sja1105_mdio.c:368:static int sja1105_mdiobus_pcs_register(struct sja1105_private *priv)\ndrivers/net/dsa/sja1105/sja1105_mdio.c-369-{\n--\ndrivers/net/dsa/sja1105/sja1105_mdio.c-395-\ndrivers/net/dsa/sja1105/sja1105_mdio.c:396:\trc = mdiobus_register(bus);\ndrivers/net/dsa/sja1105/sja1105_mdio.c-397-\tif (rc) {\n--\ndrivers/net/dsa/sja1105/sja1105_mdio.c-432-\ndrivers/net/dsa/sja1105/sja1105_mdio.c:433:\tmdiobus_unregister(bus);\ndrivers/net/dsa/sja1105/sja1105_mdio.c-434-\tmdiobus_free(bus);\n--\ndrivers/net/dsa/sja1105/sja1105_mdio.c-438-\ndrivers/net/dsa/sja1105/sja1105_mdio.c:439:static void sja1105_mdiobus_pcs_unregister(struct sja1105_private *priv)\ndrivers/net/dsa/sja1105/sja1105_mdio.c-440-{\n--\ndrivers/net/dsa/sja1105/sja1105_mdio.c-453-\ndrivers/net/dsa/sja1105/sja1105_mdio.c:454:\tmdiobus_unregister(priv-\u003emdio_pcs);\ndrivers/net/dsa/sja1105/sja1105_mdio.c-455-\tmdiobus_free(priv-\u003emdio_pcs);\n--\ndrivers/net/dsa/sja1105/sja1105_mdio.c-458-\ndrivers/net/dsa/sja1105/sja1105_mdio.c:459:int sja1105_mdiobus_register(struct dsa_switch *ds)\ndrivers/net/dsa/sja1105/sja1105_mdio.c-460-{\n--\ndrivers/net/dsa/sja1105/sja1105_mdio.c-466-\ndrivers/net/dsa/sja1105/sja1105_mdio.c:467:\trc = sja1105_mdiobus_pcs_register(priv);\ndrivers/net/dsa/sja1105/sja1105_mdio.c-468-\tif (rc)\n--\ndrivers/net/dsa/sja1105/sja1105_mdio.c-475-\tif (regs-\u003emdio_100base_tx != SJA1105_RSV_ADDR) {\ndrivers/net/dsa/sja1105/sja1105_mdio.c:476:\t\trc = sja1105_mdiobus_base_tx_register(priv, mdio_node);\ndrivers/net/dsa/sja1105/sja1105_mdio.c-477-\t\tif (rc)\n--\ndrivers/net/dsa/sja1105/sja1105_mdio.c-481-\tif (regs-\u003emdio_100base_t1 != SJA1105_RSV_ADDR) {\ndrivers/net/dsa/sja1105/sja1105_mdio.c:482:\t\trc = sja1105_mdiobus_base_t1_register(priv, mdio_node);\ndrivers/net/dsa/sja1105/sja1105_mdio.c-483-\t\tif (rc)\n--\ndrivers/net/dsa/sja1105/sja1105_mdio.c-491-err_free_base_tx_mdiobus:\ndrivers/net/dsa/sja1105/sja1105_mdio.c:492:\tsja1105_mdiobus_base_tx_unregister(priv);\ndrivers/net/dsa/sja1105/sja1105_mdio.c-493-err_put_mdio_node:\ndrivers/net/dsa/sja1105/sja1105_mdio.c-494-\tof_node_put(mdio_node);\ndrivers/net/dsa/sja1105/sja1105_mdio.c:495:\tsja1105_mdiobus_pcs_unregister(priv);\ndrivers/net/dsa/sja1105/sja1105_mdio.c-496-\n--\ndrivers/net/dsa/sja1105/sja1105_mdio.c-499-\ndrivers/net/dsa/sja1105/sja1105_mdio.c:500:void sja1105_mdiobus_unregister(struct dsa_switch *ds)\ndrivers/net/dsa/sja1105/sja1105_mdio.c-501-{\n--\ndrivers/net/dsa/sja1105/sja1105_mdio.c-503-\ndrivers/net/dsa/sja1105/sja1105_mdio.c:504:\tsja1105_mdiobus_base_t1_unregister(priv);\ndrivers/net/dsa/sja1105/sja1105_mdio.c:505:\tsja1105_mdiobus_base_tx_unregister(priv);\ndrivers/net/dsa/sja1105/sja1105_mdio.c:506:\tsja1105_mdiobus_pcs_unregister(priv);\ndrivers/net/dsa/sja1105/sja1105_mdio.c-507-}\n--\ndrivers/net/ethernet/8390/ax88796.c=459=static int ax_mii_init(struct net_device *dev)\n--\ndrivers/net/ethernet/8390/ax88796.c-478-\ndrivers/net/ethernet/8390/ax88796.c:479:\terr = mdiobus_register(ax-\u003emii_bus);\ndrivers/net/ethernet/8390/ax88796.c-480-\tif (err)\n--\ndrivers/net/ethernet/8390/ax88796.c=491=static int ax_open(struct net_device *dev)\n--\ndrivers/net/ethernet/8390/ax88796.c-533-\t/* unregister mdiobus */\ndrivers/net/ethernet/8390/ax88796.c:534:\tmdiobus_unregister(ax-\u003emii_bus);\ndrivers/net/ethernet/8390/ax88796.c-535-\tfree_mdio_bitbang(ax-\u003emii_bus);\n--\ndrivers/net/ethernet/8390/ax88796.c=540=static int ax_close(struct net_device *dev)\n--\ndrivers/net/ethernet/8390/ax88796.c-556-\ndrivers/net/ethernet/8390/ax88796.c:557:\tmdiobus_unregister(ax-\u003emii_bus);\ndrivers/net/ethernet/8390/ax88796.c-558-\tfree_mdio_bitbang(ax-\u003emii_bus);\n--\ndrivers/net/ethernet/actions/owl-emac.c=1321=static int owl_emac_mdio_init(struct net_device *netdev)\n--\ndrivers/net/ethernet/actions/owl-emac.c-1345-\ndrivers/net/ethernet/actions/owl-emac.c:1346:\tret = devm_of_mdiobus_register(dev, priv-\u003emii, mdio_node);\ndrivers/net/ethernet/actions/owl-emac.c-1347-\n--\ndrivers/net/ethernet/adi/adin1110.c=509=static int adin1110_register_mdiobus(struct adin1110_priv *priv,\n--\ndrivers/net/ethernet/adi/adin1110.c-529-\ndrivers/net/ethernet/adi/adin1110.c:530:\tret = devm_mdiobus_register(dev, mii_bus);\ndrivers/net/ethernet/adi/adin1110.c-531-\tif (ret)\n--\ndrivers/net/ethernet/adi/adin1140.c=611=static int adin1140_mdiobus_write(struct mii_bus *bus, int addr, int regnum,\n--\ndrivers/net/ethernet/adi/adin1140.c-616-\ndrivers/net/ethernet/adi/adin1140.c:617:static int adin1140_mdio_register(struct adin1140_priv *priv,\ndrivers/net/ethernet/adi/adin1140.c-618-\t\t\t\t  struct spi_device *spidev)\n--\ndrivers/net/ethernet/adi/adin1140.c-636-\ndrivers/net/ethernet/adi/adin1140.c:637:\treturn devm_mdiobus_register(\u0026spidev-\u003edev, priv-\u003emdiobus);\ndrivers/net/ethernet/adi/adin1140.c-638-}\n--\ndrivers/net/ethernet/adi/adin1140.c=650=static int adin1140_phy_init(struct adin1140_priv *priv,\n--\ndrivers/net/ethernet/adi/adin1140.c-654-\ndrivers/net/ethernet/adi/adin1140.c:655:\tret = adin1140_mdio_register(priv, spidev);\ndrivers/net/ethernet/adi/adin1140.c-656-\tif (ret)\n--\ndrivers/net/ethernet/aeroflex/greth.c=1290=static int greth_mdio_init(struct greth_private *greth)\n--\ndrivers/net/ethernet/aeroflex/greth.c-1306-\ndrivers/net/ethernet/aeroflex/greth.c:1307:\tret = mdiobus_register(greth-\u003emdio);\ndrivers/net/ethernet/aeroflex/greth.c-1308-\tif (ret) {\n--\ndrivers/net/ethernet/aeroflex/greth.c-1334-unreg_mdio:\n\n"
}

gemini-3.8-flash

null

null

							input: 51701
							output: 41
							thoughts: 88
						

Here's my take on those thoughts:

**Analyzing USB Network Driver PHY Probing**

Okay, so I'm thinking about how a USB network driver, specifically one that's emulatable within QEMU, interacts with a PHY (Physical Layer). The core question is: can a driver even *probe* the PHY in that environment?

Let's dive into the code. The `lan78xx.c` driver looks like a good starting point. I see `lan78xx_probe`... aha! Right there: `ret = lan78xx_phy_init(dev);`. That looks promising. It seems the probing action could be initiated there.

Now, let's zoom in on `lan78xx_phy_init(dev)`. That's where the magic probably happens. Time to dissect that function and see what's actually going on. I need to understand the specifics of how the driver attempts to initialize the PHY to determine if it's feasible within the QEMU emulated context. I suspect the answer is there, I just need to dig a little deeper.

{
  "File": "drivers/net/usb/lan78xx.c",
  "FirstLine": 2780,
  "LineCount": 60
}

{
  "Contents": "2780:\t\t\t\t\t\t      sizeof(u32));\n2781:\t\tif (len \u003c 0)\n2782:\t\t\treturn 0;\n2783:\t\n2784:\t\tret = lan78xx_read_reg(dev, HW_CFG, \u0026reg);\n2785:\t\tif (ret \u003c 0)\n2786:\t\t\treturn ret;\n2787:\t\n2788:\t\treg \u0026= ~(HW_CFG_LED0_EN_ | HW_CFG_LED1_EN_ |\n2789:\t\t\t HW_CFG_LED2_EN_ | HW_CFG_LED3_EN_);\n2790:\t\n2791:\t\treg |= (len \u003e 0) * HW_CFG_LED0_EN_ |\n2792:\t\t       (len \u003e 1) * HW_CFG_LED1_EN_ |\n2793:\t\t       (len \u003e 2) * HW_CFG_LED2_EN_ |\n2794:\t\t       (len \u003e 3) * HW_CFG_LED3_EN_;\n2795:\t\n2796:\t\treturn lan78xx_write_reg(dev, HW_CFG, reg);\n2797:\t}\n2798:\t\n2799:\tstatic int lan78xx_phylink_setup(struct lan78xx_net *dev)\n2800:\t{\n2801:\t\tstruct phylink_config *pc = \u0026dev-\u003ephylink_config;\n2802:\t\tstruct phylink *phylink;\n2803:\t\n2804:\t\tpc-\u003edev = \u0026dev-\u003enet-\u003edev;\n2805:\t\tpc-\u003etype = PHYLINK_NETDEV;\n2806:\t\tpc-\u003emac_capabilities = MAC_SYM_PAUSE | MAC_ASYM_PAUSE | MAC_10 |\n2807:\t\t\t\t       MAC_100 | MAC_1000FD;\n2808:\t\tpc-\u003emac_managed_pm = true;\n2809:\t\tpc-\u003elpi_capabilities = MAC_100FD | MAC_1000FD;\n2810:\t\t/*\n2811:\t\t * Default TX LPI (Low Power Idle) request delay count is set to 50us.\n2812:\t\t *\n2813:\t\t * Source: LAN7800 Documentation, DS00001992H, Section 15.1.57, Page 204.\n2814:\t\t *\n2815:\t\t * Reasoning:\n2816:\t\t * According to the application note in the LAN7800 documentation, a\n2817:\t\t * zero delay may negatively impact the TX data path’s ability to\n2818:\t\t * support Gigabit operation. A value of 50us is recommended as a\n2819:\t\t * reasonable default when the part operates at Gigabit speeds,\n2820:\t\t * balancing stability and power efficiency in EEE mode. This delay can\n2821:\t\t * be increased based on performance testing, as EEE is designed for\n2822:\t\t * scenarios with mostly idle links and occasional bursts of full\n2823:\t\t * bandwidth transmission. The goal is to ensure reliable Gigabit\n2824:\t\t * performance without overly aggressive power optimization during\n2825:\t\t * inactive periods.\n2826:\t\t */\n2827:\t\tpc-\u003elpi_timer_default = 50;\n2828:\t\tpc-\u003eeee_enabled_default = true;\n2829:\t\n2830:\t\tif (dev-\u003echipid == ID_REV_CHIP_ID_7801_)\n2831:\t\t\tphy_interface_set_rgmii(pc-\u003esupported_interfaces);\n2832:\t\telse\n2833:\t\t\t__set_bit(PHY_INTERFACE_MODE_GMII, pc-\u003esupported_interfaces);\n2834:\t\n2835:\t\tmemcpy(dev-\u003ephylink_config.lpi_interfaces,\n2836:\t\t       dev-\u003ephylink_config.supported_interfaces,\n2837:\t\t       sizeof(dev-\u003ephylink_config.lpi_interfaces));\n2838:\t\n2839:\t\tphylink = phylink_create(pc, dev-\u003enet-\u003edev.fwnode,\n"
}

gemini-3.8-flash

null

null

							input: 53157
							output: 41
							thoughts: 17
						

Okay, let's dive into this `lan78xx_phy_init` routine. I need to understand its flow, its purpose within the broader driver context, and most importantly, how it handles the physical layer initialization of this specific PHY. 

**Deconstructing `lan78xx_phy_init`**

Alright, my initial thought is, what's the broader picture here? Is this called after device probe, or maybe during some power-up sequence? Knowing the call context is crucial for understanding the initialization's timing dependencies. I'll need to look at the surrounding code to determine where and when this function is called.

Next, I'll need to identify the key steps involved. What registers does it access? Are there any PHY-specific configurations, such as speed negotiation, flow control settings, or power-saving modes being set? Any bit twiddling operations will require a close look to see if the correct registers are being addressed and configured to their required states. I also need to note any register dependencies within this routine.

Then, are there any error conditions? Does it check for PHY presence or link status? Any timeouts? Error handling is critical in PHY initialization to handle unexpected responses or failures. Understanding the error recovery strategy would be very important. If the error handling is inadequate, it will cause stability issues that are difficult to debug.

Finally, what assumptions does this initialization make about the hardware or the surrounding environment? Is it assuming a specific clock source, voltage level, or external components? And of course, I should be looking for any potential race conditions or concurrency issues, especially if this function interacts with interrupts or other threads. I’ll be on the lookout for any locking mechanisms, and make sure that any shared data is properly protected.

{
  "File": "drivers/net/usb/lan78xx.c",
  "FirstLine": 2840,
  "LineCount": 60
}

{
  "Contents": "2840:\t\t\t\t\t dev-\u003einterface, \u0026lan78xx_phylink_mac_ops);\n2841:\t\tif (IS_ERR(phylink))\n2842:\t\t\treturn PTR_ERR(phylink);\n2843:\t\n2844:\t\tdev-\u003ephylink = phylink;\n2845:\t\n2846:\t\treturn 0;\n2847:\t}\n2848:\t\n2849:\tstatic void lan78xx_phy_uninit(struct lan78xx_net *dev)\n2850:\t{\n2851:\t\tif (dev-\u003ephylink) {\n2852:\t\t\tphylink_disconnect_phy(dev-\u003ephylink);\n2853:\t\t\tphylink_destroy(dev-\u003ephylink);\n2854:\t\t\tdev-\u003ephylink = NULL;\n2855:\t\t}\n2856:\t}\n2857:\t\n2858:\tstatic int lan78xx_phy_init(struct lan78xx_net *dev)\n2859:\t{\n2860:\t\tstruct phy_device *phydev;\n2861:\t\tint ret;\n2862:\t\n2863:\t\tphydev = lan78xx_get_phy(dev);\n2864:\t\t/* phydev can be NULL if no PHY is found and the chip is LAN7801,\n2865:\t\t * which will use a fixed link later.\n2866:\t\t * If an  error occurs, return the error code immediately.\n2867:\t\t */\n2868:\t\tif (IS_ERR(phydev))\n2869:\t\t\treturn PTR_ERR(phydev);\n2870:\t\n2871:\t\tret = lan78xx_phylink_setup(dev);\n2872:\t\tif (ret \u003c 0)\n2873:\t\t\treturn ret;\n2874:\t\n2875:\t\tret = lan78xx_mac_prepare_for_phy(dev);\n2876:\t\tif (ret \u003c 0)\n2877:\t\t\tgoto phylink_uninit;\n2878:\t\n2879:\t\t/* If no PHY is found, set up a fixed link. It is very specific to\n2880:\t\t * the LAN7801 and is used in special cases like EVB-KSZ9897-1 where\n2881:\t\t * LAN7801 acts as a USB-to-Ethernet interface to a switch without\n2882:\t\t * a visible PHY.\n2883:\t\t */\n2884:\t\tif (!phydev) {\n2885:\t\t\tret = lan78xx_set_fixed_link(dev);\n2886:\t\t\tif (ret \u003c 0)\n2887:\t\t\t\tgoto phylink_uninit;\n2888:\t\n2889:\t\t\t/* No PHY found, so set up a fixed link and return early.\n2890:\t\t\t * No need to configure PHY IRQ or attach to phylink.\n2891:\t\t\t */\n2892:\t\t\treturn 0;\n2893:\t\t}\n2894:\t\n2895:\t\t/* if phyirq is not set, use polling mode in phylib */\n2896:\t\tif (dev-\u003edomain_data.phyirq \u003e 0)\n2897:\t\t\tphydev-\u003eirq = dev-\u003edomain_data.phyirq;\n2898:\t\telse\n2899:\t\t\tphydev-\u003eirq = PHY_POLL;\n"
}

gemini-3.8-flash

null

null

							input: 54485
							output: 41
							thoughts: 39
						

Here's my thought process, distilled:

**Finding the MDIO Bus Registration in the lan78xx Driver**

Okay, so I need to track down where the `dev->mdiobus` is actually getting registered within the `lan78xx` driver. That's the core question here. My first step is to quickly locate where that initialization happens. Let's start with a focused search for the likely function responsible for setting up the MDIO bus. My gut says `lan78xx_mdio_init` is the most probable candidate for the task. Let me search for it and dig in.

{
  "Expression": "lan78xx_mdio_init",
  "PathPrefix": "drivers/net/usb/lan78xx.c"
}

{
  "Output": "drivers/net/usb/lan78xx.c=2052=static int lan78xx_mdiobus_write(struct mii_bus *bus, int phy_id, int idx,\n--\ndrivers/net/usb/lan78xx.c-2090-\ndrivers/net/usb/lan78xx.c:2091:static int lan78xx_mdio_init(struct lan78xx_net *dev)\ndrivers/net/usb/lan78xx.c-2092-{\n--\ndrivers/net/usb/lan78xx.c=3762=static int lan78xx_bind(struct lan78xx_net *dev, struct usb_interface *intf)\n--\ndrivers/net/usb/lan78xx.c-3820-\ndrivers/net/usb/lan78xx.c:3821:\tret = lan78xx_mdio_init(dev);\ndrivers/net/usb/lan78xx.c-3822-\tif (ret) {\n"
}

gemini-3.8-flash

null

null

							input: 54965
							output: 41
							thoughts: 15
						

Okay, here's my interpretation of what's going through my mind as I approach the `lan78xx_mdio_init` function, thinking like an expert:

**Diving into the LAN78xx MDIO Initialization**

Alright, time to dig into `lan78xx_mdio_init`. This is where the rubber hits the road with the MDIO (Management Data Input/Output) interface for the LAN78xx. I'm immediately thinking, "Okay, what's the game plan here?" This function is likely responsible for setting up the fundamental communication pathway for configuring and managing the PHY (Physical Layer) of this particular Ethernet controller.

My first questions: Are we dealing with hardware registers or an abstraction layer? What specific MDIO interface (e.g., SMI, RMII) is being used on this platform? What initialization parameters are being passed in and how do they relate to the hardware configuration?

I'll be looking for clues like:

*   **Register Writes:** Expect to see direct writes to MDIO registers to configure clock speeds, select the PHY address, and potentially enable the MDIO interface itself.
*   **Clock Configuration:** This is crucial. The MDIO clock speed needs to be appropriate for the attached PHY and the hardware's clock source. There will likely be settings for pre- and post-dividers. I'll be looking for that.
*   **PHY Address Mapping:** The function needs to know which PHY the LAN78xx is supposed to communicate with. Are we hardcoding an address, using a dynamic detection method, or relying on a device tree?
*   **Error Handling:** It's absolutely critical to handle potential errors during initialization. I expect to see checks for MDIO transaction failures (timeouts, bus errors) and appropriate error codes or return values.
*   **Interrupt Handling (potentially):** If interrupt-driven MDIO communication is used, this function might be responsible for enabling and configuring relevant interrupts.
*   **Driver Abstractions:** Depending on the driver design, I'll be looking for function calls to the bus driver. I know that the driver will be abstracting the low level hardware registers, but the abstraction is important.

I'm mentally preparing for a combination of low-level register manipulation and higher-level function calls that manage the bus. I expect to parse through the function to understand the precise sequence of operations, the timing constraints, and the error handling strategy. It will be important to understand how this code integrates with the overall LAN78xx driver and the system's MDIO framework. Let's see what we've got!

{
  "File": "drivers/net/usb/lan78xx.c",
  "FirstLine": 2090,
  "LineCount": 40
}

{
  "Contents": "2090:\t\n2091:\tstatic int lan78xx_mdio_init(struct lan78xx_net *dev)\n2092:\t{\n2093:\t\tstruct device_node *node;\n2094:\t\tint ret;\n2095:\t\n2096:\t\tdev-\u003emdiobus = mdiobus_alloc();\n2097:\t\tif (!dev-\u003emdiobus) {\n2098:\t\t\tnetdev_err(dev-\u003enet, \"can't allocate MDIO bus\\n\");\n2099:\t\t\treturn -ENOMEM;\n2100:\t\t}\n2101:\t\n2102:\t\tdev-\u003emdiobus-\u003epriv = (void *)dev;\n2103:\t\tdev-\u003emdiobus-\u003eread = lan78xx_mdiobus_read;\n2104:\t\tdev-\u003emdiobus-\u003ewrite = lan78xx_mdiobus_write;\n2105:\t\tdev-\u003emdiobus-\u003ename = \"lan78xx-mdiobus\";\n2106:\t\tdev-\u003emdiobus-\u003eparent = \u0026dev-\u003eudev-\u003edev;\n2107:\t\n2108:\t\tsnprintf(dev-\u003emdiobus-\u003eid, MII_BUS_ID_SIZE, \"usb-%03d:%03d\",\n2109:\t\t\t dev-\u003eudev-\u003ebus-\u003ebusnum, dev-\u003eudev-\u003edevnum);\n2110:\t\n2111:\t\tswitch (dev-\u003echipid) {\n2112:\t\tcase ID_REV_CHIP_ID_7800_:\n2113:\t\tcase ID_REV_CHIP_ID_7850_:\n2114:\t\t\t/* set to internal PHY id */\n2115:\t\t\tdev-\u003emdiobus-\u003ephy_mask = ~(1 \u003c\u003c 1);\n2116:\t\t\tbreak;\n2117:\t\tcase ID_REV_CHIP_ID_7801_:\n2118:\t\t\tbreak;\n2119:\t\t}\n2120:\t\n2121:\t\tnode = of_get_child_by_name(dev-\u003eudev-\u003edev.of_node, \"mdio\");\n2122:\t\tret = of_mdiobus_register(dev-\u003emdiobus, node);\n2123:\t\tof_node_put(node);\n2124:\t\tif (ret) {\n2125:\t\t\tnetdev_err(dev-\u003enet, \"can't register MDIO bus\\n\");\n2126:\t\t\tgoto exit1;\n2127:\t\t}\n2128:\t\n2129:\t\tnetdev_dbg(dev-\u003enet, \"registered mdiobus bus %s\\n\", dev-\u003emdiobus-\u003eid);\n"
}

gemini-3.8-flash

null

null

							input: 56270
							output: 22
							thoughts: 83
						

Here's my take on those thoughts:

**Analyzing MDIO Bus Registration**

Okay, so I'm looking at this `of_mdiobus_register(dev->mdiobus, node)` call, and my initial thought is, "Ah, right, this is the device tree-aware registration." Specifically, I'm noting that if `node` is `NULL` – which it is on x86/amd64 systems without a device tree, as I'd expect – this function cleverly falls back to `mdiobus_register(mdio)`. That's a nice, clean approach for handling both DT and legacy setups.  My next step is to dive into the implementation of `of_mdiobus_register`. I'll need to confirm exactly how it's handling that fallback and see what other conditions it is checking for. Ultimately, I am searching for a device tree, and if that search is unfruitful, I need to understand that the code I'm analyzing will revert to the generic setup.

{
  "Expression": "int of_mdiobus_register"
}

{
  "Output": "drivers/net/mdio/of_mdio.c=44=EXPORT_SYMBOL(of_mdiobus_phy_device_register);\ndrivers/net/mdio/of_mdio.c-45-\ndrivers/net/mdio/of_mdio.c:46:static int of_mdiobus_register_phy(struct mii_bus *mdio,\ndrivers/net/mdio/of_mdio.c-47-\t\t\t\t    struct device_node *child, u32 addr)\n--\ndrivers/net/mdio/of_mdio.c-51-\ndrivers/net/mdio/of_mdio.c:52:static int of_mdiobus_register_device(struct mii_bus *mdio,\ndrivers/net/mdio/of_mdio.c-53-\t\t\t\t      struct device_node *child, u32 addr)\n--\ninclude/linux/of_mdio.h=17=int __of_mdiobus_register(struct mii_bus *mdio, struct device_node *np,\n--\ninclude/linux/of_mdio.h-19-\ninclude/linux/of_mdio.h:20:static inline int of_mdiobus_register(struct mii_bus *mdio,\ninclude/linux/of_mdio.h-21-\t\t\t\t      struct device_node *np)\n--\ninclude/linux/of_mdio.h=76=static inline bool of_mdiobus_child_is_phy(struct device_node *child)\n--\ninclude/linux/of_mdio.h-80-\ninclude/linux/of_mdio.h:81:static inline int of_mdiobus_register(struct mii_bus *mdio, struct device_node *np)\ninclude/linux/of_mdio.h-82-{\n"
}

gemini-3.8-flash

null

null

							input: 57053
							output: 37
							thoughts: 0
						

{
  "File": "include/linux/of_mdio.h",
  "FirstLine": 18,
  "LineCount": 15
}

{
  "Contents": "  18:\t\t\t\t  struct module *owner);\n  19:\t\n  20:\tstatic inline int of_mdiobus_register(struct mii_bus *mdio,\n  21:\t\t\t\t\t      struct device_node *np)\n  22:\t{\n  23:\t\treturn __of_mdiobus_register(mdio, np, THIS_MODULE);\n  24:\t}\n  25:\t\n  26:\tint __devm_of_mdiobus_register(struct device *dev, struct mii_bus *mdio,\n  27:\t\t\t\t       struct device_node *np, struct module *owner);\n  28:\t\n  29:\tstatic inline int devm_of_mdiobus_register(struct device *dev,\n  30:\t\t\t\t\t\t   struct mii_bus *mdio,\n  31:\t\t\t\t\t\t   struct device_node *np)\n  32:\t{\n"
}

gemini-3.8-flash

null

null

							input: 57326
							output: 23
							thoughts: 22
						

Here's a summary of my thought process, as requested:

**Deconstructing `__of_mdiobus_register` with a Null Pointer**

Okay, so I'm looking at `__of_mdiobus_register` and my immediate concern is how it handles the case where `np` is null. Naturally, as an expert, I'm already anticipating potential pitfalls. A null pointer in this context likely signifies a failure to locate a device node, which is a critical piece of the device tree puzzle. My intuition tells me this is where things will likely get interesting. I need to understand if the function gracefully handles this situation. Does it return an error code? Does it lead to a kernel panic? Does it just silently fail? The answer will reveal a lot about the robustness of the driver's initialization sequence. I'm mentally tracing the execution path, ready to dig into the surrounding code to see how this null check is implemented and how the function reacts to the absence of the expected device information. This detail is crucial for ensuring the stability and reliability of the whole system.

{
  "Expression": "int __of_mdiobus_register"
}

{
  "Output": "drivers/net/mdio/of_mdio.c=139=static int __of_mdiobus_parse_phys(struct mii_bus *mdio, struct device_node *np,\n--\ndrivers/net/mdio/of_mdio.c-194- */\ndrivers/net/mdio/of_mdio.c:195:int __of_mdiobus_register(struct mii_bus *mdio, struct device_node *np,\ndrivers/net/mdio/of_mdio.c-196-\t\t\t  struct module *owner)\n--\ninclude/linux/of_mdio.h=16=bool of_mdiobus_child_is_phy(struct device_node *child);\ninclude/linux/of_mdio.h:17:int __of_mdiobus_register(struct mii_bus *mdio, struct device_node *np,\ninclude/linux/of_mdio.h-18-\t\t\t  struct module *owner);\n"
}

gemini-3.8-flash

null

null

							input: 57850
							output: 41
							thoughts: 0
						

{
  "File": "drivers/net/mdio/of_mdio.c",
  "FirstLine": 195,
  "LineCount": 25
}

{
  "Contents": " 195:\tint __of_mdiobus_register(struct mii_bus *mdio, struct device_node *np,\n 196:\t\t\t\t  struct module *owner)\n 197:\t{\n 198:\t\tstruct device_node *child;\n 199:\t\tbool scanphys = false;\n 200:\t\tint addr, rc;\n 201:\t\n 202:\t\tif (!np)\n 203:\t\t\treturn __mdiobus_register(mdio, owner);\n 204:\t\n 205:\t\t/* Do not continue if the node is disabled */\n 206:\t\tif (!of_device_is_available(np))\n 207:\t\t\treturn -ENODEV;\n 208:\t\n 209:\t\t/* Mask out all PHYs from auto probing.  Instead the PHYs listed in\n 210:\t\t * the device tree are populated after the bus has been registered */\n 211:\t\tmdio-\u003ephy_mask = ~0;\n 212:\t\n 213:\t\tdevice_set_node(\u0026mdio-\u003edev, of_fwnode_handle(np));\n 214:\t\n 215:\t\t/* Get bus level PHY reset GPIO details */\n 216:\t\tmdio-\u003ereset_delay_us = DEFAULT_GPIO_RESET_DELAY;\n 217:\t\tof_property_read_u32(np, \"reset-delay-us\", \u0026mdio-\u003ereset_delay_us);\n 218:\t\tmdio-\u003ereset_post_delay_us = 0;\n 219:\t\tof_property_read_u32(np, \"reset-post-delay-us\", \u0026mdio-\u003ereset_post_delay_us);\n"
}

gemini-3.8-flash

null

null

							input: 58338
							output: 34
							thoughts: 5705
						

**Triage Analysis: Marvell PHY Driver Reachability**

Okay, so I'm diving into this `lan78xx` and Marvell PHY situation, trying to figure out if it's "WorthFuzzing" or not. The initial code flow is clear enough:  `__mdiobus_register` gets called, potentially triggering a scan, and if the LAN78xx sees a Marvell PHY (like the 88E1318S), it loads the Marvell PHY driver, and eventually, `m88e1318_set_wol` gets called.  But the critical question is *how* that Marvell PHY gets into the picture in the first place, in a fuzzer's environment.

The syzkaller guidelines are pretty explicit. Reachability is the key. They call out specific examples of *unreachable* hardware: PCIe switches, SmartNICs, GPUs – things that need actual physical hardware to exist. The language specifically mentions these are "not emulated in standard QEMU".  The positive side says "Reachable Drivers and Protocols" are those accessible via virtual buses, including USB gadgets.

So the million-dollar question: is a Marvell PHY a driver that *can* be reached via a virtual bus like USB Gadget? Or is it more akin to those *unreachable* PCIe devices – a physical ASIC? My initial thought was: Yes, a USB Gadget `lan78xx` can *theoretically* emulate an MDIO bus and, by extension, *any* PHY. The `lan78xx` driver does that – it creates a `mdiobus` and then *scans* for a PHY during probe. The `mdiobus_scan_bus_c22` function is triggered, which calls `lan78xx_mdiobus_read` to read registers from the connected PHY. If the USB Raw Gadget can return correct register values, syzkaller could find a Marvell PHY! But this raises some questions:

1.  Standard QEMU does not emulate Marvell PHYs at all. It provides NIC drivers, but they are not based on Phylib.
2.  If the answer is "Yes, it can reach it", then how can we implement the `lan78xx_mdiobus_read` emulation to actually instantiate the Marvell PHY? Is there a state machine that must be completed?
3.  The problem is not *can* it be *theoretically* emulated, the key question is "is it feasible to achieve the emulation via a fuzzer?", and is that the *intent* of "Reachable Drivers"?
4.  Do syzkaller syzlang descriptions contain I2C/SPI/MDIO devices, or do they omit them as a form of unreachable hardware?
5.  What can this "standard virtualized environment" actually emulate?  QEMU does *not* emulate Marvell PHYs.

Let's carefully consider the wording again. The "structurally unreachable hardware" example of PCIe devices is instructive. They *require* the physical card. Is a Marvell Alaska PHY, a physical, discrete transceiver chip (like the 88E1318S), any different? The code itself directly interacts with the PHY's *registers*!  That chip itself does not exist in GCE or QEMU!

If this were a real syzkaller run, would setting `FocusSymbols: ["m88e1318_set_wol"]` actually *achieve* any coverage? NO! Syzkaller would be pointed to a symbol that will NEVER be reached, because no USB raw gadget emulates a MDIO bus to return those register values.

So, when I consider the examples and the specific register operations in the Marvell driver and the instructions, I'm leaning heavily towards this being "structurally unreachable hardware".  It's a physical ASIC, and standard QEMU does *not* emulate it and syzkaller does not emulate MDIO bus register writes to instantiate a Marvell PHY for `lan78xx`. It would need a very complex USB emulation that is not found in standard syzkaller, nor is the intent. I believe that fuzzing this code is not worth it.

{
  "Expression": "phy",
  "PathPrefix": "drivers/net/dsa/dsa_loop.c"
}

{
  "Output": "drivers/net/dsa/dsa_loop.c-9-#include \u003clinux/netdevice.h\u003e\ndrivers/net/dsa/dsa_loop.c:10:#include \u003clinux/phy.h\u003e\ndrivers/net/dsa/dsa_loop.c:11:#include \u003clinux/phy_fixed.h\u003e\ndrivers/net/dsa/dsa_loop.c-12-#include \u003clinux/export.h\u003e\n--\ndrivers/net/dsa/dsa_loop.c=67=static struct dsa_loop_mib_entry dsa_loop_mibs[] = {\ndrivers/net/dsa/dsa_loop.c:68:\t[DSA_LOOP_PHY_READ_OK]\t= { \"phy_read_ok\", },\ndrivers/net/dsa/dsa_loop.c:69:\t[DSA_LOOP_PHY_READ_ERR]\t= { \"phy_read_err\", },\ndrivers/net/dsa/dsa_loop.c:70:\t[DSA_LOOP_PHY_WRITE_OK] = { \"phy_write_ok\", },\ndrivers/net/dsa/dsa_loop.c:71:\t[DSA_LOOP_PHY_WRITE_ERR] = { \"phy_write_err\", },\ndrivers/net/dsa/dsa_loop.c-72-};\ndrivers/net/dsa/dsa_loop.c-73-\ndrivers/net/dsa/dsa_loop.c:74:static struct phy_device *phydevs[PHY_MAX_ADDR];\ndrivers/net/dsa/dsa_loop.c-75-static struct mdio_device *switch_mdiodev;\n--\ndrivers/net/dsa/dsa_loop.c=174=static void dsa_loop_get_ethtool_stats(struct dsa_switch *ds, int port,\n--\ndrivers/net/dsa/dsa_loop.c-183-\ndrivers/net/dsa/dsa_loop.c:184:static int dsa_loop_phy_read(struct dsa_switch *ds, int port, int regnum)\ndrivers/net/dsa/dsa_loop.c-185-{\n--\ndrivers/net/dsa/dsa_loop.c-198-\ndrivers/net/dsa/dsa_loop.c:199:static int dsa_loop_phy_write(struct dsa_switch *ds, int port,\ndrivers/net/dsa/dsa_loop.c-200-\t\t\t      int regnum, u16 value)\n--\ndrivers/net/dsa/dsa_loop.c=321=static int dsa_loop_port_max_mtu(struct dsa_switch *ds, int port)\n--\ndrivers/net/dsa/dsa_loop.c-325-\ndrivers/net/dsa/dsa_loop.c:326:static void dsa_loop_phylink_get_caps(struct dsa_switch *dsa, int port,\ndrivers/net/dsa/dsa_loop.c:327:\t\t\t\t      struct phylink_config *config)\ndrivers/net/dsa/dsa_loop.c-328-{\n--\ndrivers/net/dsa/dsa_loop.c=334=static const struct dsa_switch_ops dsa_loop_driver = {\n--\ndrivers/net/dsa/dsa_loop.c-340-\t.get_sset_count\t\t= dsa_loop_get_sset_count,\ndrivers/net/dsa/dsa_loop.c:341:\t.get_ethtool_phy_stats\t= dsa_loop_get_ethtool_stats,\ndrivers/net/dsa/dsa_loop.c:342:\t.phy_read\t\t= dsa_loop_phy_read,\ndrivers/net/dsa/dsa_loop.c:343:\t.phy_write\t\t= dsa_loop_phy_write,\ndrivers/net/dsa/dsa_loop.c-344-\t.port_bridge_join\t= dsa_loop_port_bridge_join,\n--\ndrivers/net/dsa/dsa_loop.c-351-\t.port_max_mtu\t\t= dsa_loop_port_max_mtu,\ndrivers/net/dsa/dsa_loop.c:352:\t.phylink_get_caps\t= dsa_loop_phylink_get_caps,\ndrivers/net/dsa/dsa_loop.c-353-};\n--\ndrivers/net/dsa/dsa_loop.c=432=static int dsa_loop_bus_match(struct device *dev,\n--\ndrivers/net/dsa/dsa_loop.c-437-\ndrivers/net/dsa/dsa_loop.c:438:static void dsa_loop_phydevs_unregister(void)\ndrivers/net/dsa/dsa_loop.c-439-{\ndrivers/net/dsa/dsa_loop.c-440-\tfor (int i = 0; i \u003c NUM_FIXED_PHYS; i++) {\ndrivers/net/dsa/dsa_loop.c:441:\t\tif (!IS_ERR(phydevs[i]))\ndrivers/net/dsa/dsa_loop.c:442:\t\t\tfixed_phy_unregister(phydevs[i]);\ndrivers/net/dsa/dsa_loop.c-443-\t}\n--\ndrivers/net/dsa/dsa_loop.c=482=static int __init dsa_loop_init(void)\n--\ndrivers/net/dsa/dsa_loop.c-491-\tfor (i = 0; i \u003c NUM_FIXED_PHYS; i++)\ndrivers/net/dsa/dsa_loop.c:492:\t\tphydevs[i] = fixed_phy_register_100fd();\ndrivers/net/dsa/dsa_loop.c-493-\n--\ndrivers/net/dsa/dsa_loop.c-495-\tif (ret) {\ndrivers/net/dsa/dsa_loop.c:496:\t\tdsa_loop_phydevs_unregister();\ndrivers/net/dsa/dsa_loop.c-497-\t\tmdio_device_remove(switch_mdiodev);\n--\ndrivers/net/dsa/dsa_loop.c=505=static void __exit dsa_loop_exit(void)\n--\ndrivers/net/dsa/dsa_loop.c-507-\tmdio_driver_unregister(\u0026dsa_loop_drv);\ndrivers/net/dsa/dsa_loop.c:508:\tdsa_loop_phydevs_unregister();\ndrivers/net/dsa/dsa_loop.c-509-\tmdio_device_remove(switch_mdiodev);\n"
}

gemini-3.8-flash

null

null

							input: 66722
							output: 136
							thoughts: 755
						

**Analysis of Unreachable Marvell PHY Code**

Okay, so I've been looking at this patch and I've come to a pretty clear conclusion. The `dsa_loop` uses a dummy PHY, not a Marvell PHY, but the commit touches `drivers/net/phy/marvell.c`. Let's break this down.

First, I checked for references to `MARVELL_PHY_ID_88E1318S` and `MARVELL_PHY_ID_88E1510` in the kernel source. The results were interesting, pointing me to `drivers/net/phy/marvell.c`, `include/linux/marvell_phy.h`, and a couple of ARM Device Tree files for TI Keystone evaluation boards (`keystone-k2e-evm.dts`, `keystone-k2l-evm.dts`), as well as `drivers/net/mdio/of_mdio.c`. It's pretty clear this is about Marvell Alaska PHY transceivers, particularly those listed above. And, crucially, these are connected to MDIO/MII.

The important thing is that these Keystone boards are ARM-based, and this target architecture is `amd64`. Now, there's no x86/amd64 platform or standard QEMU virtual machine that *has* these specific pieces of hardware connected to it. The `drivers/net/phy/marvell.c` driver is specifically for physical Marvell Alaska transceivers. These are *physical* ASICs, not emulated in the typical QEMU/GCE environments we use for fuzzing.

I reviewed the "Negative Criteria" from Section 2. The relevant point here is "structurally unreachable hardware," specifically mentioning ASIC/PCIe cards that aren't emulated in standard setups. The Marvell Alaska PHYs definitely fit that bill. So, specifically, the changes to `m88e1318_set_wol` in `drivers/net/phy/marvell.c` are structurally unreachable.

I double-checked the commit diff for good measure. No other files were touched besides `drivers/net/phy/marvell.c`, and the change is limited to `m88e1318_set_wol`.

Now, let's do a sanity check on all the key aspects:
-   `WorthFuzzing`: Definitely *false*.
-   `FocusSymbols`: Null or empty. Nothing specific to target here.
-   `EnableConfigs`: Null or empty. No specific configs needed.
-   `Reasoning`: Here's the concise explanation: The commit modifies `m88e1318_set_wol()` in `drivers/net/phy/marvell.c`, which configures the Wake-on-LAN registers for Marvell Alaska 88E1318S/88E1510 Ethernet PHY transceivers. These are physical ASICs connected via MDIO/MII and aren't emulated in standard QEMU/GCE. Therefore, the modified driver code is structurally unreachable hardware in standard virtualized fuzzing setups.

Everything looks correct. The `set-results` schema is consistent with my analysis. Time to call `set-results`.

{
  "EnableConfigs": [],
  "FocusSymbols": [],
  "Reasoning": "The patch modifies m88e1318_set_wol() in drivers/net/phy/marvell.c, which handles Wake-on-LAN register configuration for discrete Marvell Alaska 88E1318S and 88E1510 Ethernet PHY transceivers. These PHY transceivers are physical ASICs connected via MDIO and are not emulated in standard QEMU or GCE virtualized environments, making this code structurally unreachable for fuzzing.",
  "WorthFuzzing": false
}

{
  "EnableConfigs": null,
  "FocusSymbols": [],
  "Reasoning": "The patch modifies m88e1318_set_wol() in drivers/net/phy/marvell.c, which handles Wake-on-LAN register configuration for discrete Marvell Alaska 88E1318S and 88E1510 Ethernet PHY transceivers. These PHY transceivers are physical ASICs connected via MDIO and are not emulated in standard QEMU or GCE virtualized environments, making this code structurally unreachable for fuzzing.",
  "WorthFuzzing": false
}

{
  "WorthFuzzing": false
}

null