AI Trajectory

null

{
  "EnableConfigs": null,
  "FocusSymbols": [],
  "KMSANReasoning": "",
  "NeedsKMSAN": false,
  "Reasoning": "The patch modifies error handling in ni_gpib_probe() in drivers/gpib/tnt4882/tnt4882_gpib.c. This is the probe function for a PCMCIA device driver (ni_gpib_cs_driver) targeting specific National Instruments PCMCIA GPIB cards. Physical PCMCIA hardware and devices are structurally unreachable in standard QEMU or GCE virtualized environments on amd64. Therefore, this code is not worth fuzzing.",
  "WorthFuzzing": false
}

null

{
  "PatchDiff": "commit b51914c8d024cf200a9a8cfde8592039d4e5c64d\nAuthor: syz-cluster \u003ctriage@syzkaller.com\u003e\nDate:   Wed Sep 16 17:05:15 2026 +0000\n\n    syz-cluster: applied patch under review\n\ndiff --git a/drivers/gpib/tnt4882/tnt4882_gpib.c b/drivers/gpib/tnt4882/tnt4882_gpib.c\nindex 3cd13f637ed4a..fc201ad17e303 100644\n--- a/drivers/gpib/tnt4882/tnt4882_gpib.c\n+++ b/drivers/gpib/tnt4882/tnt4882_gpib.c\n@@ -1585,7 +1585,13 @@ static int ni_gpib_probe(struct pcmcia_device *link)\n \n \t/* Register with Card Services */\n \tcurr_dev = link;\n-\treturn ni_gpib_config(link);\n+\tret = ni_gpib_config(link);\n+\tif (ret) {\n+\t\tkfree(info);\n+\t\tlink-\u003epriv = NULL;\n+\t}\n+\n+\treturn ret;\n }\n \n /*\n"
}

core

null

{
  "EnableConfigs": null,
  "FocusSymbols": [],
  "Reasoning": "The patch modifies error handling in ni_gpib_probe() in drivers/gpib/tnt4882/tnt4882_gpib.c. This is the probe function for a PCMCIA device driver (ni_gpib_cs_driver) targeting specific National Instruments PCMCIA GPIB cards. Physical PCMCIA hardware and devices are structurally unreachable in standard QEMU or GCE virtualized environments on amd64. Therefore, this code is not worth 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 b51914c8d024cf200a9a8cfde8592039d4e5c64d
Author: syz-cluster <triage@syzkaller.com>
Date:   Wed Sep 16 17:05:15 2026 +0000

    syz-cluster: applied patch under review

diff --git a/drivers/gpib/tnt4882/tnt4882_gpib.c b/drivers/gpib/tnt4882/tnt4882_gpib.c
index 3cd13f637ed4a..fc201ad17e303 100644
--- a/drivers/gpib/tnt4882/tnt4882_gpib.c
+++ b/drivers/gpib/tnt4882/tnt4882_gpib.c
@@ -1585,7 +1585,13 @@ static int ni_gpib_probe(struct pcmcia_device *link)
 
 	/* Register with Card Services */
 	curr_dev = link;
-	return ni_gpib_config(link);
+	ret = ni_gpib_config(link);
+	if (ret) {
+		kfree(info);
+		link->priv = NULL;
+	}
+
+	return ret;
 }
 
 /*

gemini-3.8-flash

null

null

							input: 2929
							output: 52
							thoughts: 211
						

**Analyzing a Driver Patch**

Okay, let's dive into this. The first thing I see is a patch touching `drivers/gpib/tnt4882/tnt4882_gpib.c`. Right away, that tells me we're looking at a driver, specifically for a GPIB interface, potentially based on a TNT4882 chipset. I need to understand what this patch is actually *doing*.

From the diff, it looks like the change is within the `ni_gpib_probe` function, likely the probe routine for the PCMCIA device. The core of it seems to be in error handling after calling `ni_gpib_config`. Previously, it appears they were just calling `ni_gpib_config` and returning the result. Now, there's a check on the return value `ret`. If it's non-zero (indicating an error), the `info` is freed with `kfree` and `link->priv` is set to NULL.

This is good practice. It suggests a more robust error handling approach. Previously if something failed during the config, the device data was being left in place, which could potentially cause issues with device initialization and resource management. We need to look into this more, but it seems that the patch is more complete, by doing this, the code would handle situations where the configuration of the card fails and clean up the allocated resources.

To get the full picture, I need to understand the context. I'll need to examine the surrounding code, the Kconfig for this driver, and maybe other related files. It's time to start poking around. I'll likely use `read-file` or `grepper` to get a better understanding of the code and the device's setup.

{
  "File": "drivers/gpib/tnt4882/tnt4882_gpib.c",
  "FirstLine": 1570,
  "LineCount": 40
}

{
  "Contents": "1570:\t\tinfo = kzalloc_obj(*info);\n1571:\t\tif (!info)\n1572:\t\t\treturn -ENOMEM;\n1573:\t\n1574:\t\tinfo-\u003ep_dev = link;\n1575:\t\tlink-\u003epriv = info;\n1576:\t\n1577:\t\t/*\n1578:\t\t * General socket configuration defaults can go here.  In this\n1579:\t\t * client, we assume very little, and rely on the CIS for almost\n1580:\t\t * everything.  In most clients, many details (i.e., number, sizes,\n1581:\t\t * and attributes of IO windows) are fixed by the nature of the\n1582:\t\t * device, and can be hard-wired here.\n1583:\t\t */\n1584:\t\tlink-\u003econfig_flags = CONF_ENABLE_IRQ | CONF_AUTO_SET_IO;\n1585:\t\n1586:\t\t/* Register with Card Services */\n1587:\t\tcurr_dev = link;\n1588:\t\tret = ni_gpib_config(link);\n1589:\t\tif (ret) {\n1590:\t\t\tkfree(info);\n1591:\t\t\tlink-\u003epriv = NULL;\n1592:\t\t}\n1593:\t\n1594:\t\treturn ret;\n1595:\t}\n1596:\t\n1597:\t/*\n1598:\t * This deletes a driver \"instance\".  The device is de-registered\n1599:\t * with Card Services.  If it has been released, all local data\n1600:\t * structures are freed.  Otherwise, the structures will be freed\n1601:\t * when the device is released.\n1602:\t */\n1603:\tstatic void ni_gpib_remove(struct pcmcia_device *link)\n1604:\t{\n1605:\t\tstruct local_info_t *info = link-\u003epriv;\n1606:\t\t//struct struct gpib_board *dev = info-\u003edev;\n1607:\t\n1608:\t\tif (info-\u003edev)\n1609:\t\t\tni_pcmcia_detach(info-\u003edev);\n"
}

gemini-3.8-flash

null

null

							input: 4149
							output: 30
							thoughts: 68
						

**GPIB Device Investigation**

Okay, so I need to figure out the best approach to investigate this GPIB situation. My initial thought is to dive right into the code. I'll start by checking out the `drivers/gpib/` directory and see what's in there. I also need to consider the PCMCIA / GPIB subsystem – are we dealing with PCMCIA devices here? That's the real question. Can these be probed and fuzzed within a standard QEMU environment, or am I going to need access to physical hardware? I'm hoping it's QEMU.

Wait a second, before I get too far down the rabbit hole, let me just quickly check the Kconfig file for `drivers/gpib/tnt4882`. Maybe the configuration options will give me a clue about the device type and how it's handled. That'll save me a bunch of time if I can pinpoint the crucial elements right away. Best to be efficient about this, and Kconfig is always a good starting point for this sort of investigation.

{
  "Expression": "tnt4882",
  "PathPrefix": "drivers/gpib"
}

{
  "Output": "\nFull output is too long, showing 500 out of 870 lines.\nUse more precise expression if possible.\n\ndrivers/gpib/Kconfig=62=config GPIB_NI_PCI_ISA\n--\ndrivers/gpib/Kconfig-84-\t  To compile this driver as a module, choose M here: the module will be\ndrivers/gpib/Kconfig:85:\t  called tnt4882.\ndrivers/gpib/Kconfig-86-\n--\ndrivers/gpib/Makefile=19=obj-$(CONFIG_GPIB_TMS9914) += tms9914/\ndrivers/gpib/Makefile:20:obj-$(CONFIG_GPIB_NI_PCI_ISA) += tnt4882/\n--\ndrivers/gpib/fmh_gpib/fmh_gpib.c=167=static void fmh_gpib_local_parallel_poll_mode(struct gpib_board *board, int local)\n--\ndrivers/gpib/fmh_gpib/fmh_gpib.c-175-\t\t * For fmh_gpib_core, remote parallel poll config mode is unaffected by the\ndrivers/gpib/fmh_gpib/fmh_gpib.c:176:\t\t * state of the disable bit of the parallel poll register (unlike the tnt4882).\ndrivers/gpib/fmh_gpib/fmh_gpib.c-177-\t\t * So, we don't need to worry about that.\n--\ndrivers/gpib/include/tnt4882_registers.h-9-\ndrivers/gpib/include/tnt4882_registers.h:10:// tnt4882 register offsets\ndrivers/gpib/include/tnt4882_registers.h-11-enum {\n--\ndrivers/gpib/include/tnt4882_registers.h=63=enum cfg_bits {\ndrivers/gpib/include/tnt4882_registers.h-64-\tTNT_COMMAND = 0x80,\t/* bytes are command bytes instead of data bytes\ndrivers/gpib/include/tnt4882_registers.h:65:\t\t\t\t * (tnt4882 one-chip and newer only?)\ndrivers/gpib/include/tnt4882_registers.h-66-\t\t\t\t */\n--\ndrivers/gpib/include/tnt4882_registers.h=148=enum sts2_bits {\n--\ndrivers/gpib/include/tnt4882_registers.h-155-// Auxiliary commands\ndrivers/gpib/include/tnt4882_registers.h:156:enum tnt4882_aux_cmds {\ndrivers/gpib/include/tnt4882_registers.h-157-\tAUX_9914 = 0x15,\t// switch to 9914 mode\n--\ndrivers/gpib/include/tnt4882_registers.h-165-\ndrivers/gpib/include/tnt4882_registers.h:166:enum tnt4882_aux_regs {\ndrivers/gpib/include/tnt4882_registers.h-167-\tAUXRG = 0x40,\n--\ndrivers/gpib/ni_usb/ni_usb_gpib.c-17-#include \"nec7210.h\"\ndrivers/gpib/ni_usb/ni_usb_gpib.c:18:#include \"tnt4882_registers.h\"\ndrivers/gpib/ni_usb/ni_usb_gpib.c-19-\n--\ndrivers/gpib/ni_usb/ni_usb_gpib.c=596=static int ni_usb_read(struct gpib_board *board, u8 *buffer, size_t length,\n--\ndrivers/gpib/ni_usb/ni_usb_gpib.c-633-\treg.device = NIUSB_SUBDEV_TNT4882;\ndrivers/gpib/ni_usb/ni_usb_gpib.c:634:\treg.address = nec7210_to_tnt4882_offset(AUXMR);\ndrivers/gpib/ni_usb/ni_usb_gpib.c-635-\treg.value = AUX_HLDI;\n--\ndrivers/gpib/ni_usb/ni_usb_gpib.c=1066=static int ni_usb_request_system_control(struct gpib_board *board, int request_control)\n--\ndrivers/gpib/ni_usb/ni_usb_gpib.c-1083-\t\twrites[i].device = NIUSB_SUBDEV_TNT4882;\ndrivers/gpib/ni_usb/ni_usb_gpib.c:1084:\t\twrites[i].address = nec7210_to_tnt4882_offset(AUXMR);\ndrivers/gpib/ni_usb/ni_usb_gpib.c-1085-\t\twrites[i].value = AUX_CIFC;\n--\ndrivers/gpib/ni_usb/ni_usb_gpib.c-1088-\t\twrites[i].device = NIUSB_SUBDEV_TNT4882;\ndrivers/gpib/ni_usb/ni_usb_gpib.c:1089:\t\twrites[i].address = nec7210_to_tnt4882_offset(AUXMR);\ndrivers/gpib/ni_usb/ni_usb_gpib.c-1090-\t\twrites[i].value = AUX_CREN;\n--\ndrivers/gpib/ni_usb/ni_usb_gpib.c-1092-\t\twrites[i].device = NIUSB_SUBDEV_TNT4882;\ndrivers/gpib/ni_usb/ni_usb_gpib.c:1093:\t\twrites[i].address = nec7210_to_tnt4882_offset(AUXMR);\ndrivers/gpib/ni_usb/ni_usb_gpib.c-1094-\t\twrites[i].value = AUX_CIFC;\n--\ndrivers/gpib/ni_usb/ni_usb_gpib.c-1096-\t\twrites[i].device = NIUSB_SUBDEV_TNT4882;\ndrivers/gpib/ni_usb/ni_usb_gpib.c:1097:\t\twrites[i].address = nec7210_to_tnt4882_offset(AUXMR);\ndrivers/gpib/ni_usb/ni_usb_gpib.c-1098-\t\twrites[i].value = AUX_DSC;\n--\ndrivers/gpib/ni_usb/ni_usb_gpib.c=1166=static void ni_usb_remote_enable(struct gpib_board *board, int enable)\n--\ndrivers/gpib/ni_usb/ni_usb_gpib.c-1177-\treg.device = NIUSB_SUBDEV_TNT4882;\ndrivers/gpib/ni_usb/ni_usb_gpib.c:1178:\treg.address = nec7210_to_tnt4882_offset(AUXMR);\ndrivers/gpib/ni_usb/ni_usb_gpib.c-1179-\tif (enable)\n--\ndrivers/gpib/ni_usb/ni_usb_gpib.c=1272=static int ni_usb_primary_address(struct gpib_board *board, unsigned int address)\n--\ndrivers/gpib/ni_usb/ni_usb_gpib.c-1284-\twrites[i].device = NIUSB_SUBDEV_TNT4882;\ndrivers/gpib/ni_usb/ni_usb_gpib.c:1285:\twrites[i].address = nec7210_to_tnt4882_offset(ADR);\ndrivers/gpib/ni_usb/ni_usb_gpib.c-1286-\twrites[i].value = address;\n--\ndrivers/gpib/ni_usb/ni_usb_gpib.c=1301=static int ni_usb_write_sad(struct ni_usb_register *writes, int address, int enable)\n--\ndrivers/gpib/ni_usb/ni_usb_gpib.c-1315-\twrites[i].device = NIUSB_SUBDEV_TNT4882;\ndrivers/gpib/ni_usb/ni_usb_gpib.c:1316:\twrites[i].address = nec7210_to_tnt4882_offset(ADR);\ndrivers/gpib/ni_usb/ni_usb_gpib.c-1317-\twrites[i].value = adr_bits;\n--\ndrivers/gpib/ni_usb/ni_usb_gpib.c-1319-\twrites[i].device = NIUSB_SUBDEV_TNT4882;\ndrivers/gpib/ni_usb/ni_usb_gpib.c:1320:\twrites[i].address = nec7210_to_tnt4882_offset(ADMR);\ndrivers/gpib/ni_usb/ni_usb_gpib.c-1321-\twrites[i].value = admr_bits;\n--\ndrivers/gpib/ni_usb/ni_usb_gpib.c=1407=static void ni_usb_parallel_poll_configure(struct gpib_board *board, u8 config)\n--\ndrivers/gpib/ni_usb/ni_usb_gpib.c-1419-\twrites[i].device = NIUSB_SUBDEV_TNT4882;\ndrivers/gpib/ni_usb/ni_usb_gpib.c:1420:\twrites[i].address = nec7210_to_tnt4882_offset(AUXMR);\ndrivers/gpib/ni_usb/ni_usb_gpib.c-1421-\twrites[i].value = PPR | config;\n--\ndrivers/gpib/ni_usb/ni_usb_gpib.c=1432=static void ni_usb_parallel_poll_response(struct gpib_board *board, int ist)\n--\ndrivers/gpib/ni_usb/ni_usb_gpib.c-1444-\twrites[i].device = NIUSB_SUBDEV_TNT4882;\ndrivers/gpib/ni_usb/ni_usb_gpib.c:1445:\twrites[i].address = nec7210_to_tnt4882_offset(AUXMR);\ndrivers/gpib/ni_usb/ni_usb_gpib.c-1446-\tif (ist)\n--\ndrivers/gpib/ni_usb/ni_usb_gpib.c=1460=static void ni_usb_serial_poll_response(struct gpib_board *board, u8 status)\n--\ndrivers/gpib/ni_usb/ni_usb_gpib.c-1472-\twrites[i].device = NIUSB_SUBDEV_TNT4882;\ndrivers/gpib/ni_usb/ni_usb_gpib.c:1473:\twrites[i].address = nec7210_to_tnt4882_offset(SPMR);\ndrivers/gpib/ni_usb/ni_usb_gpib.c-1474-\twrites[i].value = status;\n--\ndrivers/gpib/ni_usb/ni_usb_gpib.c=1490=static void ni_usb_return_to_local(struct gpib_board *board)\n--\ndrivers/gpib/ni_usb/ni_usb_gpib.c-1502-\twrites[i].device = NIUSB_SUBDEV_TNT4882;\ndrivers/gpib/ni_usb/ni_usb_gpib.c:1503:\twrites[i].address = nec7210_to_tnt4882_offset(AUXMR);\ndrivers/gpib/ni_usb/ni_usb_gpib.c-1504-\twrites[i].value = AUX_RTL;\n--\ndrivers/gpib/ni_usb/ni_usb_gpib.c=1597=static int ni_usb_setup_t1_delay(struct ni_usb_register *reg, unsigned int nano_sec,\n--\ndrivers/gpib/ni_usb/ni_usb_gpib.c-1604-\treg[i].device = NIUSB_SUBDEV_TNT4882;\ndrivers/gpib/ni_usb/ni_usb_gpib.c:1605:\treg[i].address = nec7210_to_tnt4882_offset(AUXMR);\ndrivers/gpib/ni_usb/ni_usb_gpib.c-1606-\tif (nano_sec \u003c= 1100)\t{\n--\ndrivers/gpib/ni_usb/ni_usb_gpib.c-1613-\treg[i].device = NIUSB_SUBDEV_TNT4882;\ndrivers/gpib/ni_usb/ni_usb_gpib.c:1614:\treg[i].address = nec7210_to_tnt4882_offset(AUXMR);\ndrivers/gpib/ni_usb/ni_usb_gpib.c-1615-\tif (nano_sec \u003c= 500)\t{\n--\ndrivers/gpib/ni_usb/ni_usb_gpib.c=1680=static int ni_usb_setup_init(struct gpib_board *board, struct ni_usb_register *writes)\n--\ndrivers/gpib/ni_usb/ni_usb_gpib.c-1695-\twrites[i].device =  NIUSB_SUBDEV_TNT4882;\ndrivers/gpib/ni_usb/ni_usb_gpib.c:1696:\twrites[i].address =  nec7210_to_tnt4882_offset(AUXMR);\ndrivers/gpib/ni_usb/ni_usb_gpib.c-1697-\tmask = AUXRA | HR_HLDA;\n--\ndrivers/gpib/ni_usb/ni_usb_gpib.c-1710-\twrites[i].device = NIUSB_SUBDEV_TNT4882;\ndrivers/gpib/ni_usb/ni_usb_gpib.c:1711:\twrites[i].address = nec7210_to_tnt4882_offset(AUXMR);\ndrivers/gpib/ni_usb/ni_usb_gpib.c-1712-\twrites[i].value = AUX_CR;\n--\ndrivers/gpib/ni_usb/ni_usb_gpib.c-1718-\twrites[i].device = NIUSB_SUBDEV_TNT4882;\ndrivers/gpib/ni_usb/ni_usb_gpib.c:1719:\twrites[i].address = nec7210_to_tnt4882_offset(IMR1);\ndrivers/gpib/ni_usb/ni_usb_gpib.c-1720-\twrites[i].value = 0x0;\n--\ndrivers/gpib/ni_usb/ni_usb_gpib.c-1722-\twrites[i].device = NIUSB_SUBDEV_TNT4882;\ndrivers/gpib/ni_usb/ni_usb_gpib.c:1723:\twrites[i].address =  nec7210_to_tnt4882_offset(IMR2);\ndrivers/gpib/ni_usb/ni_usb_gpib.c-1724-\twrites[i].value = 0x0;\n--\ndrivers/gpib/ni_usb/ni_usb_gpib.c-1730-\twrites[i].device = NIUSB_SUBDEV_TNT4882;\ndrivers/gpib/ni_usb/ni_usb_gpib.c:1731:\twrites[i].address = nec7210_to_tnt4882_offset(AUXMR);\ndrivers/gpib/ni_usb/ni_usb_gpib.c-1732-\twrites[i].value = AUX_HLDI;\n--\ndrivers/gpib/ni_usb/ni_usb_gpib.c-1737-\twrites[i].device = NIUSB_SUBDEV_TNT4882;\ndrivers/gpib/ni_usb/ni_usb_gpib.c:1738:\twrites[i].address = nec7210_to_tnt4882_offset(AUXMR);\ndrivers/gpib/ni_usb/ni_usb_gpib.c-1739-\twrites[i].value = AUXRG | NTNL_BIT;\n--\ndrivers/gpib/ni_usb/ni_usb_gpib.c-1749-\twrites[i].device = NIUSB_SUBDEV_TNT4882;\ndrivers/gpib/ni_usb/ni_usb_gpib.c:1750:\twrites[i].address = nec7210_to_tnt4882_offset(AUXMR);\ndrivers/gpib/ni_usb/ni_usb_gpib.c-1751-\twrites[i].value = AUX_CIFC;\n--\ndrivers/gpib/ni_usb/ni_usb_gpib.c-1753-\twrites[i].device = NIUSB_SUBDEV_TNT4882;\ndrivers/gpib/ni_usb/ni_usb_gpib.c:1754:\twrites[i].address = nec7210_to_tnt4882_offset(ADR);\ndrivers/gpib/ni_usb/ni_usb_gpib.c-1755-\twrites[i].value = board-\u003epad;\n--\ndrivers/gpib/ni_usb/ni_usb_gpib.c-1772-\twrites[i].device = NIUSB_SUBDEV_TNT4882;\ndrivers/gpib/ni_usb/ni_usb_gpib.c:1773:\twrites[i].address = nec7210_to_tnt4882_offset(AUXMR);\ndrivers/gpib/ni_usb/ni_usb_gpib.c-1774-\twrites[i].value = AUX_PON;\n--\ndrivers/gpib/ni_usb/ni_usb_gpib.c-1776-\twrites[i].device = NIUSB_SUBDEV_TNT4882;\ndrivers/gpib/ni_usb/ni_usb_gpib.c:1777:\twrites[i].address = nec7210_to_tnt4882_offset(AUXMR);\ndrivers/gpib/ni_usb/ni_usb_gpib.c-1778-\twrites[i].value = AUX_CPPF;\n--\ndrivers/gpib/ni_usb/ni_usb_gpib.c=2338=static int ni_usb_shutdown_hardware(struct ni_usb_priv *ni_priv)\n--\ndrivers/gpib/ni_usb/ni_usb_gpib.c-2346-\twrites[0].device = NIUSB_SUBDEV_TNT4882;\ndrivers/gpib/ni_usb/ni_usb_gpib.c:2347:\twrites[0].address = nec7210_to_tnt4882_offset(AUXMR);\ndrivers/gpib/ni_usb/ni_usb_gpib.c-2348-\twrites[0].value = AUX_CR;\n--\ndrivers/gpib/ni_usb/ni_usb_gpib.h=162=static const unsigned int ni_usb_ibsta_monitor_mask =\n--\ndrivers/gpib/ni_usb/ni_usb_gpib.h-164-\ndrivers/gpib/ni_usb/ni_usb_gpib.h:165:static inline int nec7210_to_tnt4882_offset(int offset)\ndrivers/gpib/ni_usb/ni_usb_gpib.h-166-{\n--\ndrivers/gpib/tnt4882/Makefile:1:obj-$(CONFIG_GPIB_NI_PCI_ISA) += tnt4882.o\ndrivers/gpib/tnt4882/Makefile-2-\ndrivers/gpib/tnt4882/Makefile:3:tnt4882-objs := tnt4882_gpib.o mite.o\ndrivers/gpib/tnt4882/Makefile-4-\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-3-/***************************************************************************\ndrivers/gpib/tnt4882/tnt4882_gpib.c:4: * National Instruments boards using tnt4882 or compatible chips (at-gpib, etc).\ndrivers/gpib/tnt4882/tnt4882_gpib.c-5- *    copyright            : (C) 2001, 2002 by Frank Mori Hess\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-25-#include \"mite.h\"\ndrivers/gpib/tnt4882/tnt4882_gpib.c:26:#include \"tnt4882_registers.h\"\ndrivers/gpib/tnt4882/tnt4882_gpib.c-27-\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c=30=enum {\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-42-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:43:// struct which defines private_data for tnt4882 devices\ndrivers/gpib/tnt4882/tnt4882_gpib.c:44:struct tnt4882_priv {\ndrivers/gpib/tnt4882/tnt4882_gpib.c-45-\tstruct nec7210_priv nec7210_priv;\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-53-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:54:static irqreturn_t tnt4882_internal_interrupt(struct gpib_board *board);\ndrivers/gpib/tnt4882/tnt4882_gpib.c-55-\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c=60=static const int atgpib_iosize = 32;\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-62-/* paged io */\ndrivers/gpib/tnt4882/tnt4882_gpib.c:63:static inline unsigned int tnt_paged_readb(struct tnt4882_priv *priv, unsigned long offset)\ndrivers/gpib/tnt4882/tnt4882_gpib.c-64-{\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-69-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:70:static inline void tnt_paged_writeb(struct tnt4882_priv *priv, unsigned int value,\ndrivers/gpib/tnt4882/tnt4882_gpib.c-71-\t\t\t\t    unsigned long offset)\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-78-/* readb/writeb wrappers */\ndrivers/gpib/tnt4882/tnt4882_gpib.c:79:static inline unsigned short tnt_readb(struct tnt4882_priv *priv, unsigned long offset)\ndrivers/gpib/tnt4882/tnt4882_gpib.c-80-{\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-115-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:116:static inline void tnt_writeb(struct tnt4882_priv *priv, unsigned short value, unsigned long offset)\ndrivers/gpib/tnt4882/tnt4882_gpib.c-117-{\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c=148=MODULE_LICENSE(\"GPL\");\ndrivers/gpib/tnt4882/tnt4882_gpib.c:149:MODULE_DESCRIPTION(\"GPIB driver for National Instruments boards using tnt4882 or compatible chips\");\ndrivers/gpib/tnt4882/tnt4882_gpib.c-150-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:151:static int tnt4882_line_status(const struct gpib_board *board)\ndrivers/gpib/tnt4882/tnt4882_gpib.c-152-{\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-154-\tint bcsr_bits;\ndrivers/gpib/tnt4882/tnt4882_gpib.c:155:\tstruct tnt4882_priv *tnt_priv;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-156-\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-180-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:181:static int tnt4882_t1_delay(struct gpib_board *board, unsigned int nano_sec)\ndrivers/gpib/tnt4882/tnt4882_gpib.c-182-{\ndrivers/gpib/tnt4882/tnt4882_gpib.c:183:\tstruct tnt4882_priv *tnt_priv = board-\u003eprivate_data;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-184-\tstruct nec7210_priv *nec_priv = \u0026tnt_priv-\u003enec7210_priv;\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-205-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:206:static int fifo_word_available(struct tnt4882_priv *tnt_priv)\ndrivers/gpib/tnt4882/tnt4882_gpib.c-207-{\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-216-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:217:static int fifo_byte_available(struct tnt4882_priv *tnt_priv)\ndrivers/gpib/tnt4882/tnt4882_gpib.c-218-{\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-227-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:228:static int fifo_xfer_done(struct tnt4882_priv *tnt_priv)\ndrivers/gpib/tnt4882/tnt4882_gpib.c-229-{\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-238-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:239:static int drain_fifo_words(struct tnt4882_priv *tnt_priv, u8 *buffer, int num_bytes)\ndrivers/gpib/tnt4882/tnt4882_gpib.c-240-{\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-253-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:254:static void tnt4882_release_holdoff(struct gpib_board *board, struct tnt4882_priv *tnt_priv)\ndrivers/gpib/tnt4882/tnt4882_gpib.c-255-{\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-261-\t/*\ndrivers/gpib/tnt4882/tnt4882_gpib.c:262:\t * tnt4882 not in one-chip mode won't always release holdoff unless we\ndrivers/gpib/tnt4882/tnt4882_gpib.c-263-\t * are in the right mode when release handshake command is given\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-277-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:278:static int tnt4882_accel_read(struct gpib_board *board, u8 *buffer, size_t length, int *end,\ndrivers/gpib/tnt4882/tnt4882_gpib.c-279-\t\t\t      size_t *bytes_read)\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-282-\tssize_t retval = 0;\ndrivers/gpib/tnt4882/tnt4882_gpib.c:283:\tstruct tnt4882_priv *tnt_priv = board-\u003eprivate_data;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-284-\tstruct nec7210_priv *nec_priv = \u0026tnt_priv-\u003enec7210_priv;\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-310-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:311:\ttnt4882_release_holdoff(board, tnt_priv);\ndrivers/gpib/tnt4882/tnt4882_gpib.c-312-\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-392-\t */\ndrivers/gpib/tnt4882/tnt4882_gpib.c:393:\ttnt4882_internal_interrupt(board);\ndrivers/gpib/tnt4882/tnt4882_gpib.c-394-\t/* RECEIVED_END should be in sync now */\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-407-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:408:static int fifo_space_available(struct tnt4882_priv *tnt_priv)\ndrivers/gpib/tnt4882/tnt4882_gpib.c-409-{\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-418-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:419:static unsigned int tnt_transfer_count(struct tnt4882_priv *tnt_priv)\ndrivers/gpib/tnt4882/tnt4882_gpib.c-420-{\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-430-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:431:static int write_wait(struct gpib_board *board, struct tnt4882_priv *tnt_priv,\ndrivers/gpib/tnt4882/tnt4882_gpib.c-432-\t\t      int wait_for_done, int send_commands)\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c=453=static int generic_write(struct gpib_board *board, u8 *buffer, size_t length,\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-457-\tssize_t retval = 0;\ndrivers/gpib/tnt4882/tnt4882_gpib.c:458:\tstruct tnt4882_priv *tnt_priv = board-\u003eprivate_data;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-459-\tstruct nec7210_priv *nec_priv = \u0026tnt_priv-\u003enec7210_priv;\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-539-\t */\ndrivers/gpib/tnt4882/tnt4882_gpib.c:540:\ttnt4882_internal_interrupt(board);\ndrivers/gpib/tnt4882/tnt4882_gpib.c-541-\t*bytes_written = length - tnt_transfer_count(tnt_priv);\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-544-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:545:static int tnt4882_accel_write(struct gpib_board *board, u8 *buffer,\ndrivers/gpib/tnt4882/tnt4882_gpib.c-546-\t\t\t       size_t length, int send_eoi, size_t *bytes_written)\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-550-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:551:static int tnt4882_command(struct gpib_board *board, u8 *buffer, size_t length,\ndrivers/gpib/tnt4882/tnt4882_gpib.c-552-\t\t\t   size_t *bytes_written)\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-556-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:557:static irqreturn_t tnt4882_internal_interrupt(struct gpib_board *board)\ndrivers/gpib/tnt4882/tnt4882_gpib.c-558-{\ndrivers/gpib/tnt4882/tnt4882_gpib.c:559:\tstruct tnt4882_priv *priv = board-\u003eprivate_data;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-560-\tint isr0_bits, isr3_bits, imr3_bits;\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-591-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:592:static irqreturn_t tnt4882_interrupt(int irq, void *arg)\ndrivers/gpib/tnt4882/tnt4882_gpib.c-593-{\ndrivers/gpib/tnt4882/tnt4882_gpib.c:594:\treturn tnt4882_internal_interrupt(arg);\ndrivers/gpib/tnt4882/tnt4882_gpib.c-595-}\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-597-// wrappers for interface functions\ndrivers/gpib/tnt4882/tnt4882_gpib.c:598:static int tnt4882_read(struct gpib_board *board, u8 *buffer, size_t length, int *end,\ndrivers/gpib/tnt4882/tnt4882_gpib.c-599-\t\t\tsize_t *bytes_read)\ndrivers/gpib/tnt4882/tnt4882_gpib.c-600-{\ndrivers/gpib/tnt4882/tnt4882_gpib.c:601:\tstruct tnt4882_priv *priv = board-\u003eprivate_data;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-602-\tstruct nec7210_priv *nec_priv = \u0026priv-\u003enec7210_priv;\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-617-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:618:static int tnt4882_write(struct gpib_board *board, u8 *buffer, size_t length, int send_eoi,\ndrivers/gpib/tnt4882/tnt4882_gpib.c-619-\t\t\t size_t *bytes_written)\ndrivers/gpib/tnt4882/tnt4882_gpib.c-620-{\ndrivers/gpib/tnt4882/tnt4882_gpib.c:621:\tstruct tnt4882_priv *priv = board-\u003eprivate_data;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-622-\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-625-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:626:static int tnt4882_command_unaccel(struct gpib_board *board, u8 *buffer,\ndrivers/gpib/tnt4882/tnt4882_gpib.c-627-\t\t\t\t   size_t length, size_t *bytes_written)\ndrivers/gpib/tnt4882/tnt4882_gpib.c-628-{\ndrivers/gpib/tnt4882/tnt4882_gpib.c:629:\tstruct tnt4882_priv *priv = board-\u003eprivate_data;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-630-\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-633-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:634:static int tnt4882_take_control(struct gpib_board *board, int synchronous)\ndrivers/gpib/tnt4882/tnt4882_gpib.c-635-{\ndrivers/gpib/tnt4882/tnt4882_gpib.c:636:\tstruct tnt4882_priv *priv = board-\u003eprivate_data;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-637-\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-640-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:641:static int tnt4882_go_to_standby(struct gpib_board *board)\ndrivers/gpib/tnt4882/tnt4882_gpib.c-642-{\ndrivers/gpib/tnt4882/tnt4882_gpib.c:643:\tstruct tnt4882_priv *priv = board-\u003eprivate_data;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-644-\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-647-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:648:static int tnt4882_request_system_control(struct gpib_board *board, int request_control)\ndrivers/gpib/tnt4882/tnt4882_gpib.c-649-{\ndrivers/gpib/tnt4882/tnt4882_gpib.c:650:\tstruct tnt4882_priv *priv = board-\u003eprivate_data;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-651-\tint retval;\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-664-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:665:static void tnt4882_interface_clear(struct gpib_board *board, int assert)\ndrivers/gpib/tnt4882/tnt4882_gpib.c-666-{\ndrivers/gpib/tnt4882/tnt4882_gpib.c:667:\tstruct tnt4882_priv *priv = board-\u003eprivate_data;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-668-\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-671-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:672:static void tnt4882_remote_enable(struct gpib_board *board, int enable)\ndrivers/gpib/tnt4882/tnt4882_gpib.c-673-{\ndrivers/gpib/tnt4882/tnt4882_gpib.c:674:\tstruct tnt4882_priv *priv = board-\u003eprivate_data;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-675-\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-678-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:679:static int tnt4882_enable_eos(struct gpib_board *board, u8 eos_byte, int compare_8_bits)\ndrivers/gpib/tnt4882/tnt4882_gpib.c-680-{\ndrivers/gpib/tnt4882/tnt4882_gpib.c:681:\tstruct tnt4882_priv *priv = board-\u003eprivate_data;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-682-\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-685-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:686:static void tnt4882_disable_eos(struct gpib_board *board)\ndrivers/gpib/tnt4882/tnt4882_gpib.c-687-{\ndrivers/gpib/tnt4882/tnt4882_gpib.c:688:\tstruct tnt4882_priv *priv = board-\u003eprivate_data;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-689-\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-692-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:693:static unsigned int tnt4882_update_status(struct gpib_board *board, unsigned int clear_mask)\ndrivers/gpib/tnt4882/tnt4882_gpib.c-694-{\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-696-\tu8 line_status;\ndrivers/gpib/tnt4882/tnt4882_gpib.c:697:\tstruct tnt4882_priv *priv = board-\u003eprivate_data;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-698-\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-711-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:712:static int tnt4882_primary_address(struct gpib_board *board, unsigned int address)\ndrivers/gpib/tnt4882/tnt4882_gpib.c-713-{\ndrivers/gpib/tnt4882/tnt4882_gpib.c:714:\tstruct tnt4882_priv *priv = board-\u003eprivate_data;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-715-\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-718-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:719:static int tnt4882_secondary_address(struct gpib_board *board, unsigned int address, int enable)\ndrivers/gpib/tnt4882/tnt4882_gpib.c-720-{\ndrivers/gpib/tnt4882/tnt4882_gpib.c:721:\tstruct tnt4882_priv *priv = board-\u003eprivate_data;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-722-\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-725-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:726:static int tnt4882_parallel_poll(struct gpib_board *board, u8 *result)\ndrivers/gpib/tnt4882/tnt4882_gpib.c-727-{\ndrivers/gpib/tnt4882/tnt4882_gpib.c:728:\tstruct tnt4882_priv *tnt_priv = board-\u003eprivate_data;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-729-\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-742-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:743:static void tnt4882_parallel_poll_configure(struct gpib_board *board, u8 config)\ndrivers/gpib/tnt4882/tnt4882_gpib.c-744-{\ndrivers/gpib/tnt4882/tnt4882_gpib.c:745:\tstruct tnt4882_priv *priv = board-\u003eprivate_data;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-746-\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-760-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:761:static void tnt4882_parallel_poll_response(struct gpib_board *board, int ist)\ndrivers/gpib/tnt4882/tnt4882_gpib.c-762-{\ndrivers/gpib/tnt4882/tnt4882_gpib.c:763:\tstruct tnt4882_priv *priv = board-\u003eprivate_data;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-764-\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-769- * this is just used by the old nec7210 isa interfaces, the newer\ndrivers/gpib/tnt4882/tnt4882_gpib.c:770: * boards use tnt4882_serial_poll_response2\ndrivers/gpib/tnt4882/tnt4882_gpib.c-771- */\ndrivers/gpib/tnt4882/tnt4882_gpib.c:772:static void tnt4882_serial_poll_response(struct gpib_board *board, u8 status)\ndrivers/gpib/tnt4882/tnt4882_gpib.c-773-{\ndrivers/gpib/tnt4882/tnt4882_gpib.c:774:\tstruct tnt4882_priv *priv = board-\u003eprivate_data;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-775-\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-778-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:779:static void tnt4882_serial_poll_response2(struct gpib_board *board, u8 status,\ndrivers/gpib/tnt4882/tnt4882_gpib.c-780-\t\t\t\t\t  int new_reason_for_service)\ndrivers/gpib/tnt4882/tnt4882_gpib.c-781-{\ndrivers/gpib/tnt4882/tnt4882_gpib.c:782:\tstruct tnt4882_priv *priv = board-\u003eprivate_data;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-783-\tunsigned long flags;\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-814-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:815:static u8 tnt4882_serial_poll_status(struct gpib_board *board)\ndrivers/gpib/tnt4882/tnt4882_gpib.c-816-{\ndrivers/gpib/tnt4882/tnt4882_gpib.c:817:\tstruct tnt4882_priv *priv = board-\u003eprivate_data;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-818-\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-821-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:822:static void tnt4882_return_to_local(struct gpib_board *board)\ndrivers/gpib/tnt4882/tnt4882_gpib.c-823-{\ndrivers/gpib/tnt4882/tnt4882_gpib.c:824:\tstruct tnt4882_priv *priv = board-\u003eprivate_data;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-825-\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-828-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:829:static void tnt4882_board_reset(struct tnt4882_priv *tnt_priv, struct gpib_board *board)\ndrivers/gpib/tnt4882/tnt4882_gpib.c-830-{\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-841-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:842:static int tnt4882_allocate_private(struct gpib_board *board)\ndrivers/gpib/tnt4882/tnt4882_gpib.c-843-{\ndrivers/gpib/tnt4882/tnt4882_gpib.c:844:\tstruct tnt4882_priv *tnt_priv;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-845-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:846:\tboard-\u003eprivate_data = kzalloc_obj(struct tnt4882_priv);\ndrivers/gpib/tnt4882/tnt4882_gpib.c-847-\tif (!board-\u003eprivate_data)\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-853-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:854:static void tnt4882_free_private(struct gpib_board *board)\ndrivers/gpib/tnt4882/tnt4882_gpib.c-855-{\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-859-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:860:static void tnt4882_init(struct tnt4882_priv *tnt_priv, const struct gpib_board *board)\ndrivers/gpib/tnt4882/tnt4882_gpib.c-861-{\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c=908=static int ni_pci_attach(struct gpib_board *board, const struct gpib_board_config *config)\ndrivers/gpib/tnt4882/tnt4882_gpib.c-909-{\ndrivers/gpib/tnt4882/tnt4882_gpib.c:910:\tstruct tnt4882_priv *tnt_priv;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-911-\tstruct nec7210_priv *nec_priv;\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-917-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:918:\tretval = tnt4882_allocate_private(board);\ndrivers/gpib/tnt4882/tnt4882_gpib.c-919-\tif (retval)\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-970-\t// get irq\ndrivers/gpib/tnt4882/tnt4882_gpib.c:971:\tretval = request_irq(mite_irq(tnt_priv-\u003emite), tnt4882_interrupt, isr_flags, \"ni-pci-gpib\",\ndrivers/gpib/tnt4882/tnt4882_gpib.c-972-\t\t\t     board);\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-987-\t}\ndrivers/gpib/tnt4882/tnt4882_gpib.c:988:\ttnt4882_init(tnt_priv, board);\ndrivers/gpib/tnt4882/tnt4882_gpib.c-989-\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c=993=static void ni_pci_detach(struct gpib_board *board)\ndrivers/gpib/tnt4882/tnt4882_gpib.c-994-{\ndrivers/gpib/tnt4882/tnt4882_gpib.c:995:\tstruct tnt4882_priv *tnt_priv = board-\u003eprivate_data;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-996-\tstruct nec7210_priv *nec_priv;\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1001-\t\tif (nec_priv-\u003emmiobase)\ndrivers/gpib/tnt4882/tnt4882_gpib.c:1002:\t\t\ttnt4882_board_reset(tnt_priv, board);\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1003-\t\tif (tnt_priv-\u003eirq)\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1007-\t}\ndrivers/gpib/tnt4882/tnt4882_gpib.c:1008:\ttnt4882_free_private(board);\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1009-}\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c=1030=static int ni_isa_attach_common(struct gpib_board *board, const struct gpib_board_config *config,\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1032-{\ndrivers/gpib/tnt4882/tnt4882_gpib.c:1033:\tstruct tnt4882_priv *tnt_priv;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1034-\tstruct nec7210_priv *nec_priv;\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1041-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:1042:\tretval = tnt4882_allocate_private(board);\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1043-\tif (retval)\n--\n\n"
}

gemini-3.8-flash

null

null

							input: 19870
							output: 53
							thoughts: 128
						

**Analyzing the PCMCIA GPIB Driver**

Okay, let's dive in. My initial thought is to examine the National Instruments GPIB driver for the TNT4882 card, specifically the PCMCIA version, and my instincts point me to `drivers/gpib/tnt4882/tnt4882_gpib.c`. The fact that `ni_gpib_probe` is clearly identified as a PCMCIA driver probe is a good starting point. Now, I need to get a better understanding of the PCMCIA driver definition itself. I'll focus my attention within the same file, `drivers/gpib/tnt4882/tnt4882_gpib.c`, and I'll jump right to the heart of the matter - roughly around lines 1500 to 1650. I'm expecting this section to reveal the core structure and functionality of how the driver interacts with the PCMCIA interface. I'm interested in how it handles resource allocation, device identification, and any specific PCMCIA quirks it might address. Let's see what's there.

{
  "File": "drivers/gpib/tnt4882/tnt4882_gpib.c",
  "FirstLine": 1540,
  "LineCount": 100
}

{
  "Contents": "1540:\t *\n1541:\t * You may not want to use a linked list for this -- for example, the\n1542:\t * memory card driver uses an array of dev_link_t pointers, where minor\n1543:\t * device numbers are used to derive the corresponding array index.\n1544:\t *\n1545:\t * I think this dev_list is obsolete but the pointer is needed to keep\n1546:\t * the module instance for the ni_pcmcia_attach function.\n1547:\t */\n1548:\t\n1549:\tstatic struct pcmcia_device   *curr_dev;\n1550:\t\n1551:\tstruct local_info_t {\n1552:\t\tstruct pcmcia_device\t*p_dev;\n1553:\t\tstruct gpib_board\t\t*dev;\n1554:\t\tint\t\t\tstop;\n1555:\t\tstruct bus_operations\t*bus;\n1556:\t};\n1557:\t\n1558:\t/*\n1559:\t * ni_gpib_probe() creates an \"instance\" of the driver, allocating\n1560:\t * local data structures for one device.  The device is registered\n1561:\t * with Card Services.\n1562:\t */\n1563:\t\n1564:\tstatic int ni_gpib_probe(struct pcmcia_device *link)\n1565:\t{\n1566:\t\tstruct local_info_t *info;\n1567:\t\t//struct struct gpib_board *dev;\n1568:\t\n1569:\t\t/* Allocate space for private device-specific data */\n1570:\t\tinfo = kzalloc_obj(*info);\n1571:\t\tif (!info)\n1572:\t\t\treturn -ENOMEM;\n1573:\t\n1574:\t\tinfo-\u003ep_dev = link;\n1575:\t\tlink-\u003epriv = info;\n1576:\t\n1577:\t\t/*\n1578:\t\t * General socket configuration defaults can go here.  In this\n1579:\t\t * client, we assume very little, and rely on the CIS for almost\n1580:\t\t * everything.  In most clients, many details (i.e., number, sizes,\n1581:\t\t * and attributes of IO windows) are fixed by the nature of the\n1582:\t\t * device, and can be hard-wired here.\n1583:\t\t */\n1584:\t\tlink-\u003econfig_flags = CONF_ENABLE_IRQ | CONF_AUTO_SET_IO;\n1585:\t\n1586:\t\t/* Register with Card Services */\n1587:\t\tcurr_dev = link;\n1588:\t\tret = ni_gpib_config(link);\n1589:\t\tif (ret) {\n1590:\t\t\tkfree(info);\n1591:\t\t\tlink-\u003epriv = NULL;\n1592:\t\t}\n1593:\t\n1594:\t\treturn ret;\n1595:\t}\n1596:\t\n1597:\t/*\n1598:\t * This deletes a driver \"instance\".  The device is de-registered\n1599:\t * with Card Services.  If it has been released, all local data\n1600:\t * structures are freed.  Otherwise, the structures will be freed\n1601:\t * when the device is released.\n1602:\t */\n1603:\tstatic void ni_gpib_remove(struct pcmcia_device *link)\n1604:\t{\n1605:\t\tstruct local_info_t *info = link-\u003epriv;\n1606:\t\t//struct struct gpib_board *dev = info-\u003edev;\n1607:\t\n1608:\t\tif (info-\u003edev)\n1609:\t\t\tni_pcmcia_detach(info-\u003edev);\n1610:\t\tni_gpib_release(link);\n1611:\t\n1612:\t\t//free_netdev(dev);\n1613:\t\tkfree(info);\n1614:\t}\n1615:\t\n1616:\tstatic int ni_gpib_config_iteration(struct pcmcia_device *link,\tvoid *priv_data)\n1617:\t{\n1618:\t\tint retval;\n1619:\t\n1620:\t\tretval = pcmcia_request_io(link);\n1621:\t\tif (retval != 0)\n1622:\t\t\treturn retval;\n1623:\t\n1624:\t\treturn 0;\n1625:\t}\n1626:\t\n1627:\t/*\n1628:\t * ni_gpib_config() is scheduled to run after a CARD_INSERTION event\n1629:\t * is received, to configure the PCMCIA socket, and to make the\n1630:\t * device available to the system.\n1631:\t */\n1632:\tstatic int ni_gpib_config(struct pcmcia_device *link)\n1633:\t{\n1634:\t\t//struct local_info_t *info = link-\u003epriv;\n1635:\t\t//struct gpib_board *dev = info-\u003edev;\n1636:\t\tint last_ret;\n1637:\t\n1638:\t\tlast_ret = pcmcia_loop_config(link, \u0026ni_gpib_config_iteration, NULL);\n1639:\t\tif (last_ret) {\n"
}

gemini-3.8-flash

null

null

							input: 21724
							output: 52
							thoughts: 220
						

**Debugging the `ni_gpib_probe` Function**

Okay, let's dive into this `ni_gpib_probe` function and understand what's happening. I need to get a broader context, so I'll check the rest of the function and the surrounding lines of code. Hmm, here's line 1588:

```c
ret = ni_gpib_config(link);
```

That's where the critical configuration call happens. But wait a second... is `ret` even declared within this function's scope? That seems like a potential oversight. I need to verify that before I go any further, I can't be making assumptions like that. Okay, lines 1564-1575 are the key part to check:

```c
static int ni_gpib_probe(struct pcmcia_device *link)
{
	struct local_info_t *info;
	//struct struct gpib_board *dev;

	/* Allocate space for private device-specific data */
	info = kzalloc_obj(*info);
```

Aha! There is no declaration. I need to carefully re-read the function's header and body from lines 1560 to 1575 to ensure I haven't missed something. Looks like there is no declaration of int ret. This could be a serious bug!

{
  "File": "drivers/gpib/tnt4882/tnt4882_gpib.c",
  "FirstLine": 1560,
  "LineCount": 20
}

{
  "Contents": "1560:\t * local data structures for one device.  The device is registered\n1561:\t * with Card Services.\n1562:\t */\n1563:\t\n1564:\tstatic int ni_gpib_probe(struct pcmcia_device *link)\n1565:\t{\n1566:\t\tstruct local_info_t *info;\n1567:\t\t//struct struct gpib_board *dev;\n1568:\t\n1569:\t\t/* Allocate space for private device-specific data */\n1570:\t\tinfo = kzalloc_obj(*info);\n1571:\t\tif (!info)\n1572:\t\t\treturn -ENOMEM;\n1573:\t\n1574:\t\tinfo-\u003ep_dev = link;\n1575:\t\tlink-\u003epriv = info;\n1576:\t\n1577:\t\t/*\n1578:\t\t * General socket configuration defaults can go here.  In this\n1579:\t\t * client, we assume very little, and rely on the CIS for almost\n"
}

gemini-3.8-flash

null

null

							input: 22581
							output: 69
							thoughts: 39
						

Okay, here's my interpretation of that thought process, tailored for an expert audience, and written in the first person:

**Variable Conundrum: `ret` in `tnt4882_gpib.c`**

Hold on a second. I need to be *absolutely* sure about something critical here. I'm seeing `ret` in this context, and my immediate concern is whether it's a globally scoped variable, which would have implications for thread safety and re-entrancy, or, far worse, if it's implicitly declared, which could lead to difficult-to-debug issues down the line. We all know how sloppy that can be, especially with how we work with drivers.

Before I waste too much time chasing a red herring, let's nip this in the bud. I'm going to leverage my trusty `git grep` skills. I'll search the `tnt4882_gpib.c` file *specifically* for instances of `ret`. That should quickly reveal its declaration – or lack thereof – and let me determine its scope and usage. A quick check of the scope is what I need here. It's the most time-effective approach to rule out this potential source of error. Then I can get on with my work.

{
  "Expression": "(^|[^a-zA-Z_0-9])ret([^a-zA-Z_0-9]|$)",
  "PathPrefix": "drivers/gpib/tnt4882/tnt4882_gpib.c"
}

{
  "Output": "drivers/gpib/tnt4882/tnt4882_gpib.c=1564=static int ni_gpib_probe(struct pcmcia_device *link)\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1587-\tcurr_dev = link;\ndrivers/gpib/tnt4882/tnt4882_gpib.c:1588:\tret = ni_gpib_config(link);\ndrivers/gpib/tnt4882/tnt4882_gpib.c:1589:\tif (ret) {\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1590-\t\tkfree(info);\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1593-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:1594:\treturn ret;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1595-}\n"
}

gemini-3.8-flash

null

null

							input: 23271
							output: 45
							thoughts: 31
						

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

**Debugging Panic**

Alright, hold on a second. I was just reviewing this code, and I'm hit with a sudden wave of panic. Where in the *world* is `ret` defined? Did I somehow miss declaring it? I'm pretty sure I *thought* it was handled, but is this going to even compile? This could be a classic typo situation, or worse, a subtle logic error. I need to make sure this doesn't break the build before I continue.

Okay, deep breaths... let's take a step back and get the history. Let me see what changed with this code. I need to get the changes quickly and focus! What was I working on just before I started this part? Let's check the git diff from HEAD~1 to give me the previous commit and see if that helps me solve this quickly.

{
  "Expression": "ret;",
  "PathPrefix": "drivers/gpib/tnt4882/tnt4882_gpib.c"
}

{
  "Output": "drivers/gpib/tnt4882/tnt4882_gpib.c=1564=static int ni_gpib_probe(struct pcmcia_device *link)\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1593-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:1594:\treturn ret;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1595-}\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c=1632=static int ni_gpib_config(struct pcmcia_device *link)\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1635-\t//struct gpib_board *dev = info-\u003edev;\ndrivers/gpib/tnt4882/tnt4882_gpib.c:1636:\tint last_ret;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1637-\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1641-\t\tni_gpib_release(link);\ndrivers/gpib/tnt4882/tnt4882_gpib.c:1642:\t\treturn last_ret;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1643-\t}\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1647-\t\tni_gpib_release(link);\ndrivers/gpib/tnt4882/tnt4882_gpib.c:1648:\t\treturn last_ret;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1649-\t}\n"
}

gemini-3.8-flash

null

null

							input: 24082
							output: 44
							thoughts: 70
						

**Debugging a Potential GPIB Probe Issue**

Okay, hold on a second! I've run into something. It looks like the variable `ret` wasn't actually declared within the `ni_gpib_probe` function. This is unusual and definitely needs immediate investigation. My first instinct is to check if it's a global variable that somehow escaped my notice. I need to make sure I haven't missed it declared somewhere outside the function's scope, maybe defined globally in the file.

Let's go straight to the source. I'm opening up `tnt4882_gpib.c` and specifically focusing on lines 1 through 50. I need to scan this initial section methodically. I'm looking for a global declaration of `ret`, perhaps initialized or used in some conditional way. It's also worth considering that there might be some conditional compilation going on. Maybe `ret` only gets declared when a certain preprocessor define for PCMCIA is enabled, and perhaps that's not the case here. I need to rule out that scenario to make sure I have the full picture.

{
  "Expression": "ret",
  "PathPrefix": "drivers/gpib/tnt4882/tnt4882_gpib.c"
}

{
  "Output": "\nFull output is too long, showing 500 out of 609 lines.\nUse more precise expression if possible.\n\ndrivers/gpib/tnt4882/tnt4882_gpib.c=44=struct tnt4882_priv {\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-53-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:54:static irqreturn_t tnt4882_internal_interrupt(struct gpib_board *board);\ndrivers/gpib/tnt4882/tnt4882_gpib.c-55-\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c=63=static inline unsigned int tnt_paged_readb(struct tnt4882_priv *priv, unsigned long offset)\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-66-\tudelay(1);\ndrivers/gpib/tnt4882/tnt4882_gpib.c:67:\treturn ioread8(priv-\u003enec7210_priv.mmiobase + offset);\ndrivers/gpib/tnt4882/tnt4882_gpib.c-68-}\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c=79=static inline unsigned short tnt_readb(struct tnt4882_priv *priv, unsigned long offset)\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-82-\tunsigned long flags;\ndrivers/gpib/tnt4882/tnt4882_gpib.c:83:\tunsigned short retval;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-84-\tspinlock_t *register_lock = \u0026priv-\u003enec7210_priv.register_page_lock;\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-94-\t\tcase TNT5004:\ndrivers/gpib/tnt4882/tnt4882_gpib.c:95:\t\t\tretval = ioread8(address);\ndrivers/gpib/tnt4882/tnt4882_gpib.c-96-\t\t\tbreak;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-97-\t\tcase NAT4882:\ndrivers/gpib/tnt4882/tnt4882_gpib.c:98:\t\t\tretval = tnt_paged_readb(priv, offset - tnt_pagein_offset);\ndrivers/gpib/tnt4882/tnt4882_gpib.c-99-\t\t\tbreak;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-100-\t\tcase NEC7210:\ndrivers/gpib/tnt4882/tnt4882_gpib.c:101:\t\t\tretval = 0;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-102-\t\t\tbreak;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-103-\t\tdefault:\ndrivers/gpib/tnt4882/tnt4882_gpib.c:104:\t\t\tretval = 0;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-105-\t\t\tbreak;\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-108-\tdefault:\ndrivers/gpib/tnt4882/tnt4882_gpib.c:109:\t\tretval = ioread8(address);\ndrivers/gpib/tnt4882/tnt4882_gpib.c-110-\t\tbreak;\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-112-\tspin_unlock_irqrestore(register_lock, flags);\ndrivers/gpib/tnt4882/tnt4882_gpib.c:113:\treturn retval;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-114-}\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c=151=static int tnt4882_line_status(const struct gpib_board *board)\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-177-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:178:\treturn status;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-179-}\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c=181=static int tnt4882_t1_delay(struct gpib_board *board, unsigned int nano_sec)\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-184-\tstruct nec7210_priv *nec_priv = \u0026tnt_priv-\u003enec7210_priv;\ndrivers/gpib/tnt4882/tnt4882_gpib.c:185:\tunsigned int retval;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-186-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:187:\tretval = nec7210_t1_delay(board, nec_priv, nano_sec);\ndrivers/gpib/tnt4882/tnt4882_gpib.c-188-\tif (nec_priv-\u003etype == NEC7210)\ndrivers/gpib/tnt4882/tnt4882_gpib.c:189:\t\treturn retval;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-190-\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-192-\t\ttnt_writeb(tnt_priv, MSTD, KEYREG);\ndrivers/gpib/tnt4882/tnt4882_gpib.c:193:\t\tretval = 350;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-194-\t} else {\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-198-\t\twrite_byte(nec_priv, AUXRI | USTD, AUXMR);\ndrivers/gpib/tnt4882/tnt4882_gpib.c:199:\t\tretval = 1100;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-200-\t} else {\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-202-\t}\ndrivers/gpib/tnt4882/tnt4882_gpib.c:203:\treturn retval;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-204-}\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c=206=static int fifo_word_available(struct tnt4882_priv *tnt_priv)\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-208-\tint status2;\ndrivers/gpib/tnt4882/tnt4882_gpib.c:209:\tint retval;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-210-\ndrivers/gpib/tnt4882/tnt4882_gpib.c-211-\tstatus2 = tnt_readb(tnt_priv, STS2);\ndrivers/gpib/tnt4882/tnt4882_gpib.c:212:\tretval = (status2 \u0026 AEFN) \u0026\u0026 (status2 \u0026 BEFN);\ndrivers/gpib/tnt4882/tnt4882_gpib.c-213-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:214:\treturn retval;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-215-}\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c=217=static int fifo_byte_available(struct tnt4882_priv *tnt_priv)\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-219-\tint status2;\ndrivers/gpib/tnt4882/tnt4882_gpib.c:220:\tint retval;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-221-\ndrivers/gpib/tnt4882/tnt4882_gpib.c-222-\tstatus2 = tnt_readb(tnt_priv, STS2);\ndrivers/gpib/tnt4882/tnt4882_gpib.c:223:\tretval = (status2 \u0026 AEFN) || (status2 \u0026 BEFN);\ndrivers/gpib/tnt4882/tnt4882_gpib.c-224-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:225:\treturn retval;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-226-}\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c=228=static int fifo_xfer_done(struct tnt4882_priv *tnt_priv)\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-230-\tint status1;\ndrivers/gpib/tnt4882/tnt4882_gpib.c:231:\tint retval;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-232-\ndrivers/gpib/tnt4882/tnt4882_gpib.c-233-\tstatus1 = tnt_readb(tnt_priv, STS1);\ndrivers/gpib/tnt4882/tnt4882_gpib.c:234:\tretval = status1 \u0026 (S_DONE | S_HALT);\ndrivers/gpib/tnt4882/tnt4882_gpib.c-235-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:236:\treturn retval;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-237-}\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c=239=static int drain_fifo_words(struct tnt4882_priv *tnt_priv, u8 *buffer, int num_bytes)\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-250-\t}\ndrivers/gpib/tnt4882/tnt4882_gpib.c:251:\treturn count;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-252-}\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c=278=static int tnt4882_accel_read(struct gpib_board *board, u8 *buffer, size_t length, int *end,\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-281-\tsize_t count = 0;\ndrivers/gpib/tnt4882/tnt4882_gpib.c:282:\tssize_t retval = 0;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-283-\tstruct tnt4882_priv *tnt_priv = board-\u003eprivate_data;\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-331-\t\t\t\t\t     test_bit(TIMO_NUM, \u0026board-\u003estatus))) {\ndrivers/gpib/tnt4882/tnt4882_gpib.c:332:\t\t\tretval = -ERESTARTSYS;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-333-\t\t\tbreak;\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-335-\t\tif (test_bit(TIMO_NUM, \u0026board-\u003estatus))\t{\ndrivers/gpib/tnt4882/tnt4882_gpib.c:336:\t\t\tretval = -ETIMEDOUT;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-337-\t\t\tbreak;\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-339-\t\tif (test_bit(DEV_CLEAR_BN, \u0026nec_priv-\u003estate)) {\ndrivers/gpib/tnt4882/tnt4882_gpib.c:340:\t\t\tretval = -EINTR;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-341-\t\t\tbreak;\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-343-\t\tif (test_bit(ADR_CHANGE_BN, \u0026nec_priv-\u003estate)) {\ndrivers/gpib/tnt4882/tnt4882_gpib.c:344:\t\t\tretval = -EINTR;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-345-\t\t\tbreak;\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-369-\t\t\t\t\t     test_bit(TIMO_NUM, \u0026board-\u003estatus))) {\ndrivers/gpib/tnt4882/tnt4882_gpib.c:370:\t\t\tretval = -ERESTARTSYS;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-371-\t\t}\ndrivers/gpib/tnt4882/tnt4882_gpib.c-372-\t\tif (test_bit(TIMO_NUM, \u0026board-\u003estatus))\ndrivers/gpib/tnt4882/tnt4882_gpib.c:373:\t\t\tretval = -ETIMEDOUT;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-374-\t\tif (test_bit(DEV_CLEAR_BN, \u0026nec_priv-\u003estate))\ndrivers/gpib/tnt4882/tnt4882_gpib.c:375:\t\t\tretval = -EINTR;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-376-\t\tif (test_bit(ADR_CHANGE_BN, \u0026nec_priv-\u003estate))\ndrivers/gpib/tnt4882/tnt4882_gpib.c:377:\t\t\tretval = -EINTR;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-378-\t\tcount += drain_fifo_words(tnt_priv, \u0026buffer[count], length - count);\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-396-\t\t*end = 1;\ndrivers/gpib/tnt4882/tnt4882_gpib.c:397:\tif (retval \u003c 0)\t{\ndrivers/gpib/tnt4882/tnt4882_gpib.c-398-\t\t// force immediate holdoff\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-404-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:405:\treturn retval;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-406-}\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c=408=static int fifo_space_available(struct tnt4882_priv *tnt_priv)\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-410-\tint status2;\ndrivers/gpib/tnt4882/tnt4882_gpib.c:411:\tint retval;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-412-\ndrivers/gpib/tnt4882/tnt4882_gpib.c-413-\tstatus2 = tnt_readb(tnt_priv, STS2);\ndrivers/gpib/tnt4882/tnt4882_gpib.c:414:\tretval = (status2 \u0026 AFFN) \u0026\u0026 (status2 \u0026 BFFN);\ndrivers/gpib/tnt4882/tnt4882_gpib.c-415-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:416:\treturn retval;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-417-}\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c=419=static unsigned int tnt_transfer_count(struct tnt4882_priv *tnt_priv)\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-426-\tcount |= (tnt_readb(tnt_priv, CNT3) \u003c\u003c 24) \u0026 0xff000000;\ndrivers/gpib/tnt4882/tnt4882_gpib.c:427:\t// return two's complement\ndrivers/gpib/tnt4882/tnt4882_gpib.c:428:\treturn -count;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-429-};\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c=431=static int write_wait(struct gpib_board *board, struct tnt4882_priv *tnt_priv,\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-441-\t\t\t\t     test_bit(TIMO_NUM, \u0026board-\u003estatus)))\ndrivers/gpib/tnt4882/tnt4882_gpib.c:442:\t\treturn -ERESTARTSYS;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-443-\ndrivers/gpib/tnt4882/tnt4882_gpib.c-444-\tif (test_bit(TIMO_NUM, \u0026board-\u003estatus))\ndrivers/gpib/tnt4882/tnt4882_gpib.c:445:\t\treturn -ETIMEDOUT;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-446-\tif (test_and_clear_bit(BUS_ERROR_BN, \u0026nec_priv-\u003estate))\ndrivers/gpib/tnt4882/tnt4882_gpib.c:447:\t\treturn (send_commands) ? -ENOTCONN : -ECOMM;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-448-\tif (test_bit(DEV_CLEAR_BN, \u0026nec_priv-\u003estate))\ndrivers/gpib/tnt4882/tnt4882_gpib.c:449:\t\treturn -EINTR;\ndrivers/gpib/tnt4882/tnt4882_gpib.c:450:\treturn 0;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-451-}\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c=453=static int generic_write(struct gpib_board *board, u8 *buffer, size_t length,\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-456-\tsize_t count = 0;\ndrivers/gpib/tnt4882/tnt4882_gpib.c:457:\tssize_t retval = 0;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-458-\tstruct tnt4882_priv *tnt_priv = board-\u003eprivate_data;\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-504-\t\t// wait until byte is ready to be sent\ndrivers/gpib/tnt4882/tnt4882_gpib.c:505:\t\tretval = write_wait(board, tnt_priv, 0, send_commands);\ndrivers/gpib/tnt4882/tnt4882_gpib.c:506:\t\tif (retval \u003c 0)\ndrivers/gpib/tnt4882/tnt4882_gpib.c-507-\t\t\tbreak;\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-527-\t// wait last byte has been sent\ndrivers/gpib/tnt4882/tnt4882_gpib.c:528:\tif (retval == 0)\ndrivers/gpib/tnt4882/tnt4882_gpib.c:529:\t\tretval = write_wait(board, tnt_priv, 1, send_commands);\ndrivers/gpib/tnt4882/tnt4882_gpib.c-530-\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-541-\t*bytes_written = length - tnt_transfer_count(tnt_priv);\ndrivers/gpib/tnt4882/tnt4882_gpib.c:542:\treturn retval;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-543-}\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c=545=static int tnt4882_accel_write(struct gpib_board *board, u8 *buffer,\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-547-{\ndrivers/gpib/tnt4882/tnt4882_gpib.c:548:\treturn generic_write(board, buffer, length, send_eoi, 0, bytes_written);\ndrivers/gpib/tnt4882/tnt4882_gpib.c-549-}\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c=551=static int tnt4882_command(struct gpib_board *board, u8 *buffer, size_t length,\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-553-{\ndrivers/gpib/tnt4882/tnt4882_gpib.c:554:\treturn generic_write(board, buffer, length, 0, 1, bytes_written);\ndrivers/gpib/tnt4882/tnt4882_gpib.c-555-}\ndrivers/gpib/tnt4882/tnt4882_gpib.c-556-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:557:static irqreturn_t tnt4882_internal_interrupt(struct gpib_board *board)\ndrivers/gpib/tnt4882/tnt4882_gpib.c-558-{\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-588-\tspin_unlock_irqrestore(\u0026board-\u003espinlock, flags);\ndrivers/gpib/tnt4882/tnt4882_gpib.c:589:\treturn IRQ_HANDLED;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-590-}\ndrivers/gpib/tnt4882/tnt4882_gpib.c-591-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:592:static irqreturn_t tnt4882_interrupt(int irq, void *arg)\ndrivers/gpib/tnt4882/tnt4882_gpib.c-593-{\ndrivers/gpib/tnt4882/tnt4882_gpib.c:594:\treturn tnt4882_internal_interrupt(arg);\ndrivers/gpib/tnt4882/tnt4882_gpib.c-595-}\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c=598=static int tnt4882_read(struct gpib_board *board, u8 *buffer, size_t length, int *end,\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-602-\tstruct nec7210_priv *nec_priv = \u0026priv-\u003enec7210_priv;\ndrivers/gpib/tnt4882/tnt4882_gpib.c:603:\tint retval;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-604-\tint dummy;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-605-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:606:\tretval = nec7210_read(board, \u0026priv-\u003enec7210_priv, buffer, length, end, bytes_read);\ndrivers/gpib/tnt4882/tnt4882_gpib.c-607-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:608:\tif (retval \u003c 0)\t{\t// force immediate holdoff\ndrivers/gpib/tnt4882/tnt4882_gpib.c-609-\t\twrite_byte(nec_priv, AUX_HLDI, AUXMR);\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-614-\t}\ndrivers/gpib/tnt4882/tnt4882_gpib.c:615:\treturn retval;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-616-}\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c=618=static int tnt4882_write(struct gpib_board *board, u8 *buffer, size_t length, int send_eoi,\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-622-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:623:\treturn nec7210_write(board, \u0026priv-\u003enec7210_priv, buffer, length, send_eoi, bytes_written);\ndrivers/gpib/tnt4882/tnt4882_gpib.c-624-}\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c=626=static int tnt4882_command_unaccel(struct gpib_board *board, u8 *buffer,\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-630-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:631:\treturn nec7210_command(board, \u0026priv-\u003enec7210_priv, buffer, length, bytes_written);\ndrivers/gpib/tnt4882/tnt4882_gpib.c-632-}\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c=634=static int tnt4882_take_control(struct gpib_board *board, int synchronous)\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-637-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:638:\treturn nec7210_take_control(board, \u0026priv-\u003enec7210_priv, synchronous);\ndrivers/gpib/tnt4882/tnt4882_gpib.c-639-}\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c=641=static int tnt4882_go_to_standby(struct gpib_board *board)\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-644-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:645:\treturn nec7210_go_to_standby(board, \u0026priv-\u003enec7210_priv);\ndrivers/gpib/tnt4882/tnt4882_gpib.c-646-}\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c=648=static int tnt4882_request_system_control(struct gpib_board *board, int request_control)\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-650-\tstruct tnt4882_priv *priv = board-\u003eprivate_data;\ndrivers/gpib/tnt4882/tnt4882_gpib.c:651:\tint retval;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-652-\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-656-\t}\ndrivers/gpib/tnt4882/tnt4882_gpib.c:657:\tretval = nec7210_request_system_control(board, \u0026priv-\u003enec7210_priv, request_control);\ndrivers/gpib/tnt4882/tnt4882_gpib.c-658-\tif (!request_control) {\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-661-\t}\ndrivers/gpib/tnt4882/tnt4882_gpib.c:662:\treturn retval;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-663-}\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c=679=static int tnt4882_enable_eos(struct gpib_board *board, u8 eos_byte, int compare_8_bits)\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-682-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:683:\treturn nec7210_enable_eos(board, \u0026priv-\u003enec7210_priv, eos_byte, compare_8_bits);\ndrivers/gpib/tnt4882/tnt4882_gpib.c-684-}\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c=693=static unsigned int tnt4882_update_status(struct gpib_board *board, unsigned int clear_mask)\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-708-\tspin_unlock_irqrestore(\u0026board-\u003espinlock, flags);\ndrivers/gpib/tnt4882/tnt4882_gpib.c:709:\treturn board-\u003estatus;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-710-}\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c=712=static int tnt4882_primary_address(struct gpib_board *board, unsigned int address)\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-715-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:716:\treturn nec7210_primary_address(board, \u0026priv-\u003enec7210_priv, address);\ndrivers/gpib/tnt4882/tnt4882_gpib.c-717-}\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c=719=static int tnt4882_secondary_address(struct gpib_board *board, unsigned int address, int enable)\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-722-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:723:\treturn nec7210_secondary_address(board, \u0026priv-\u003enec7210_priv, address, enable);\ndrivers/gpib/tnt4882/tnt4882_gpib.c-724-}\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c=726=static int tnt4882_parallel_poll(struct gpib_board *board, u8 *result)\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-736-\t\twrite_byte(\u0026tnt_priv-\u003enec7210_priv, tnt_priv-\u003eauxg_bits, AUXMR);\ndrivers/gpib/tnt4882/tnt4882_gpib.c:737:\t\treturn 0;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-738-\t} else {\ndrivers/gpib/tnt4882/tnt4882_gpib.c:739:\t\treturn nec7210_parallel_poll(board, \u0026tnt_priv-\u003enec7210_priv, result);\ndrivers/gpib/tnt4882/tnt4882_gpib.c-740-\t}\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c=815=static u8 tnt4882_serial_poll_status(struct gpib_board *board)\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-818-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:819:\treturn nec7210_serial_poll_status(board, \u0026priv-\u003enec7210_priv);\ndrivers/gpib/tnt4882/tnt4882_gpib.c-820-}\ndrivers/gpib/tnt4882/tnt4882_gpib.c-821-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:822:static void tnt4882_return_to_local(struct gpib_board *board)\ndrivers/gpib/tnt4882/tnt4882_gpib.c-823-{\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-825-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:826:\tnec7210_return_to_local(board, \u0026priv-\u003enec7210_priv);\ndrivers/gpib/tnt4882/tnt4882_gpib.c-827-}\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c=842=static int tnt4882_allocate_private(struct gpib_board *board)\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-847-\tif (!board-\u003eprivate_data)\ndrivers/gpib/tnt4882/tnt4882_gpib.c:848:\t\treturn -ENOMEM;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-849-\ttnt_priv = board-\u003eprivate_data;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-850-\tinit_nec7210_private(\u0026tnt_priv-\u003enec7210_priv);\ndrivers/gpib/tnt4882/tnt4882_gpib.c:851:\treturn 0;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-852-}\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c=908=static int ni_pci_attach(struct gpib_board *board, const struct gpib_board_config *config)\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-912-\tint isr_flags = IRQF_SHARED;\ndrivers/gpib/tnt4882/tnt4882_gpib.c:913:\tint retval;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-914-\tstruct mite_struct *mite;\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-917-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:918:\tretval = tnt4882_allocate_private(board);\ndrivers/gpib/tnt4882/tnt4882_gpib.c:919:\tif (retval)\ndrivers/gpib/tnt4882/tnt4882_gpib.c:920:\t\treturn retval;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-921-\ttnt_priv = board-\u003eprivate_data;\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-928-\tif (!mite_devices)\ndrivers/gpib/tnt4882/tnt4882_gpib.c:929:\t\treturn -ENODEV;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-930-\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-960-\tif (!mite)\ndrivers/gpib/tnt4882/tnt4882_gpib.c:961:\t\treturn -ENODEV;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-962-\ndrivers/gpib/tnt4882/tnt4882_gpib.c-963-\ttnt_priv-\u003emite = mite;\ndrivers/gpib/tnt4882/tnt4882_gpib.c:964:\tretval = mite_setup(tnt_priv-\u003emite);\ndrivers/gpib/tnt4882/tnt4882_gpib.c:965:\tif (retval \u003c 0)\ndrivers/gpib/tnt4882/tnt4882_gpib.c:966:\t\treturn retval;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-967-\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-970-\t// get irq\ndrivers/gpib/tnt4882/tnt4882_gpib.c:971:\tretval = request_irq(mite_irq(tnt_priv-\u003emite), tnt4882_interrupt, isr_flags, \"ni-pci-gpib\",\ndrivers/gpib/tnt4882/tnt4882_gpib.c-972-\t\t\t     board);\ndrivers/gpib/tnt4882/tnt4882_gpib.c:973:\tif (retval) {\ndrivers/gpib/tnt4882/tnt4882_gpib.c-974-\t\tdev_err(board-\u003egpib_dev, \"failed to obtain pci irq %d\\n\", mite_irq(tnt_priv-\u003emite));\ndrivers/gpib/tnt4882/tnt4882_gpib.c:975:\t\treturn retval;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-976-\t}\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-989-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:990:\treturn 0;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-991-}\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c=1011=static int ni_isapnp_find(struct pnp_dev **dev)\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1015-\tif (!*dev || !(*dev)-\u003ecard)\ndrivers/gpib/tnt4882/tnt4882_gpib.c:1016:\t\treturn -ENODEV;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1017-\tif (pnp_device_attach(*dev) \u003c 0)\ndrivers/gpib/tnt4882/tnt4882_gpib.c:1018:\t\treturn -EBUSY;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1019-\tif (pnp_activate_dev(*dev) \u003c 0)\t{\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1020-\t\tpnp_device_detach(*dev);\ndrivers/gpib/tnt4882/tnt4882_gpib.c:1021:\t\treturn -EAGAIN;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1022-\t}\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1024-\t\tpnp_device_detach(*dev);\ndrivers/gpib/tnt4882/tnt4882_gpib.c:1025:\t\treturn -EINVAL;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1026-\t}\ndrivers/gpib/tnt4882/tnt4882_gpib.c:1027:\treturn 0;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1028-}\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c=1030=static int ni_isa_attach_common(struct gpib_board *board, const struct gpib_board_config *config,\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1037-\tint irq;\ndrivers/gpib/tnt4882/tnt4882_gpib.c:1038:\tint retval;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1039-\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1041-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:1042:\tretval = tnt4882_allocate_private(board);\ndrivers/gpib/tnt4882/tnt4882_gpib.c:1043:\tif (retval)\ndrivers/gpib/tnt4882/tnt4882_gpib.c:1044:\t\treturn retval;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1045-\ttnt_priv = board-\u003eprivate_data;\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1055-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:1056:\t\tretval = ni_isapnp_find(\u0026dev);\ndrivers/gpib/tnt4882/tnt4882_gpib.c:1057:\t\tif (retval \u003c 0)\ndrivers/gpib/tnt4882/tnt4882_gpib.c:1058:\t\t\treturn retval;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1059-\t\ttnt_priv-\u003epnp_dev = dev;\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1067-\tif (!request_region(iobase, atgpib_iosize, \"atgpib\"))\ndrivers/gpib/tnt4882/tnt4882_gpib.c:1068:\t\treturn -EBUSY;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1069-\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1071-\tif (!nec_priv-\u003emmiobase)\ndrivers/gpib/tnt4882/tnt4882_gpib.c:1072:\t\treturn -EBUSY;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1073-\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1074-\t// get irq\ndrivers/gpib/tnt4882/tnt4882_gpib.c:1075:\tretval = request_irq(irq, tnt4882_interrupt, isr_flags, \"atgpib\", board);\ndrivers/gpib/tnt4882/tnt4882_gpib.c:1076:\tif (retval) {\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1077-\t\tdev_err(board-\u003egpib_dev, \"failed to request ISA irq %d\\n\", irq);\ndrivers/gpib/tnt4882/tnt4882_gpib.c:1078:\t\treturn retval;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1079-\t}\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1083-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:1084:\treturn 0;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1085-}\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c=1087=static int ni_tnt_isa_attach(struct gpib_board *board, const struct gpib_board_config *config)\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1088-{\ndrivers/gpib/tnt4882/tnt4882_gpib.c:1089:\treturn ni_isa_attach_common(board, config, TNT4882);\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1090-}\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c=1092=static int ni_nat4882_isa_attach(struct gpib_board *board, const struct gpib_board_config *config)\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1093-{\ndrivers/gpib/tnt4882/tnt4882_gpib.c:1094:\treturn ni_isa_attach_common(board, config, NAT4882);\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1095-}\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c=1097=static int ni_nec_isa_attach(struct gpib_board *board, const struct gpib_board_config *config)\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1098-{\ndrivers/gpib/tnt4882/tnt4882_gpib.c:1099:\treturn ni_isa_attach_common(board, config, NEC7210);\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1100-}\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c=1123=static int tnt4882_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1124-{\ndrivers/gpib/tnt4882/tnt4882_gpib.c:1125:\treturn 0;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1126-}\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c=1128=static struct gpib_interface ni_pci_interface = {\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1152-\t.t1_delay = tnt4882_t1_delay,\ndrivers/gpib/tnt4882/tnt4882_gpib.c:1153:\t.return_to_local = tnt4882_return_to_local,\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1154-};\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c=1156=static struct gpib_interface ni_pci_accel_interface = {\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1180-\t.t1_delay = tnt4882_t1_delay,\ndrivers/gpib/tnt4882/tnt4882_gpib.c:1181:\t.return_to_local = tnt4882_return_to_local,\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1182-};\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c=1184=static struct gpib_interface ni_isa_interface = {\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1208-\t.t1_delay = tnt4882_t1_delay,\ndrivers/gpib/tnt4882/tnt4882_gpib.c:1209:\t.return_to_local = tnt4882_return_to_local,\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1210-};\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c=1212=static struct gpib_interface ni_nat4882_isa_interface = {\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1236-\t.t1_delay = tnt4882_t1_delay,\ndrivers/gpib/tnt4882/tnt4882_gpib.c:1237:\t.return_to_local = tnt4882_return_to_local,\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1238-};\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c=1240=static struct gpib_interface ni_nec_isa_interface = {\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1264-\t.t1_delay = tnt4882_t1_delay,\ndrivers/gpib/tnt4882/tnt4882_gpib.c:1265:\t.return_to_local = tnt4882_return_to_local,\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1266-};\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c=1268=static struct gpib_interface ni_isa_accel_interface = {\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1292-\t.t1_delay = tnt4882_t1_delay,\ndrivers/gpib/tnt4882/tnt4882_gpib.c:1293:\t.return_to_local = tnt4882_return_to_local,\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1294-};\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c=1296=static struct gpib_interface ni_nat4882_isa_accel_interface = {\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1320-\t.t1_delay = tnt4882_t1_delay,\ndrivers/gpib/tnt4882/tnt4882_gpib.c:1321:\t.return_to_local = tnt4882_return_to_local,\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1322-};\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c=1324=static struct gpib_interface ni_nec_isa_accel_interface = {\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1348-\t.t1_delay = tnt4882_t1_delay,\ndrivers/gpib/tnt4882/tnt4882_gpib.c:1349:\t.return_to_local = tnt4882_return_to_local,\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1350-};\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c=1389=static int __init tnt4882_init_module(void)\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1395-\t\tpr_err(\"pci_register_driver failed: error = %d\\n\", result);\ndrivers/gpib/tnt4882/tnt4882_gpib.c:1396:\t\treturn result;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1397-\t}\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1468-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:1469:\treturn 0;\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1470-\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1495-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:1496:\treturn result;\n\n"
}

gemini-3.8-flash

null

null

							input: 39879
							output: 52
							thoughts: 62
						

**Debugging the GPIB Driver**

Okay, so I'm diving into this `ni_gpib_probe` function, and immediately I've hit a snag. `ret` is totally undeclared! That's a classic rookie mistake. Alright, hold on a sec, don't jump to conclusions, let's not make assumptions. I need to backtrack and see how this is supposed to work. Let's start with lines 1520 through 1540 in `drivers/gpib/tnt4882/tnt4882_gpib.c` – that's where the heart of this routine is, surely it defines something that this code depends on. Let's see if something further up has a declaration that this is dependent on.

{
  "File": "drivers/gpib/tnt4882/tnt4882_gpib.c",
  "FirstLine": 1510,
  "LineCount": 40
}

{
  "Contents": "1510:\t\tgpib_unregister_driver(\u0026ni_pcmcia_interface);\n1511:\t\tgpib_unregister_driver(\u0026ni_pcmcia_accel_interface);\n1512:\t\texit_ni_gpib_cs();\n1513:\t#endif\n1514:\t\n1515:\t\tmite_cleanup();\n1516:\t\n1517:\t\tpci_unregister_driver(\u0026tnt4882_pci_driver);\n1518:\t}\n1519:\t\n1520:\t#ifdef CONFIG_GPIB_PCMCIA\n1521:\t\n1522:\t#include \u003clinux/kernel.h\u003e\n1523:\t#include \u003clinux/moduleparam.h\u003e\n1524:\t#include \u003clinux/ptrace.h\u003e\n1525:\t#include \u003clinux/timer.h\u003e\n1526:\t#include \u003clinux/io.h\u003e\n1527:\t\n1528:\t#include \u003cpcmcia/cistpl.h\u003e\n1529:\t#include \u003cpcmcia/cisreg.h\u003e\n1530:\t#include \u003cpcmcia/ds.h\u003e\n1531:\t\n1532:\tstatic int ni_gpib_config(struct pcmcia_device  *link);\n1533:\tstatic void ni_gpib_release(struct pcmcia_device *link);\n1534:\tstatic void ni_pcmcia_detach(struct gpib_board *board);\n1535:\t\n1536:\t/*\n1537:\t * A linked list of \"instances\" of the dummy device.  Each actual\n1538:\t * PCMCIA card corresponds to one device instance, and is described\n1539:\t * by one dev_link_t structure (defined in ds.h).\n1540:\t *\n1541:\t * You may not want to use a linked list for this -- for example, the\n1542:\t * memory card driver uses an array of dev_link_t pointers, where minor\n1543:\t * device numbers are used to derive the corresponding array index.\n1544:\t *\n1545:\t * I think this dev_list is obsolete but the pointer is needed to keep\n1546:\t * the module instance for the ni_pcmcia_attach function.\n1547:\t */\n1548:\t\n1549:\tstatic struct pcmcia_device   *curr_dev;\n"
}

gemini-3.8-flash

null

null

							input: 40805
							output: 30
							thoughts: 370
						

**Analyzing the `ni_gpib_probe` Function**

Okay, let's break this down. Line 1564-1595, specifically the `ni_gpib_probe` function. This is clearly a probe function for a PCMCIA device, specifically for a National Instruments GPIB interface. First, it allocates memory for `local_info_t` using `kzalloc_obj`, which is standard practice. Then, it sets up a pointer to the PCMCIA device and stores the private data. So far, so good; nothing unexpected.

The comments mention socket configuration defaults. They wisely avoid hardcoding too much and opt to rely on the CIS (Card Information Structure). They do set the `config_flags` for enabling the IRQ and automatic I/O window setup – a reasonable approach.

Now, the interesting part: `curr_dev = link;` and then `ret = ni_gpib_config(link);`. It seems that `ni_gpib_config` is the critical function that actually configures the device. What catches my attention is that `ret` is used before it is declared. That's a compiler error! Let me see what's going on... Is `int ret;` globally declared somewhere? No! This will absolutely cause a compilation error. That’s a bug!

I need to confirm if `CONFIG_GPIB_PCMCIA` is defined in Kconfig to understand the context.

{
  "Expression": "GPIB_PCMCIA",
  "PathPrefix": "drivers/gpib"
}

{
  "Output": "drivers/gpib/Kconfig=177=config GPIB_INES\n--\ndrivers/gpib/Kconfig-200-\ndrivers/gpib/Kconfig:201:config GPIB_PCMCIA\ndrivers/gpib/Kconfig-202-       def_bool y\n--\ndrivers/gpib/cb7210/cb7210.c=1103=static struct pci_driver cb7210_pci_driver = {\n--\ndrivers/gpib/cb7210/cb7210.c-1116-\ndrivers/gpib/cb7210/cb7210.c:1117:#ifdef CONFIG_GPIB_PCMCIA\ndrivers/gpib/cb7210/cb7210.c-1118-\n--\ndrivers/gpib/cb7210/cb7210.c=1448=static void cb_pcmcia_detach(struct gpib_board *board)\n--\ndrivers/gpib/cb7210/cb7210.c-1465-\ndrivers/gpib/cb7210/cb7210.c:1466:#endif /* CONFIG_GPIB_PCMCIA */\ndrivers/gpib/cb7210/cb7210.c-1467-\ndrivers/gpib/cb7210/cb7210.c=1468=static int __init cb7210_init_module(void)\n--\ndrivers/gpib/cb7210/cb7210.c-1513-\ndrivers/gpib/cb7210/cb7210.c:1514:#ifdef CONFIG_GPIB_PCMCIA\ndrivers/gpib/cb7210/cb7210.c-1515-\tret = gpib_register_driver(\u0026cb_pcmcia_interface, THIS_MODULE);\n--\ndrivers/gpib/cb7210/cb7210.c-1541-\ndrivers/gpib/cb7210/cb7210.c:1542:#ifdef CONFIG_GPIB_PCMCIA\ndrivers/gpib/cb7210/cb7210.c-1543-err_pcmcia_driver:\n--\ndrivers/gpib/cb7210/cb7210.c=1568=static void __exit cb7210_exit_module(void)\n--\ndrivers/gpib/cb7210/cb7210.c-1575-\tgpib_unregister_driver(\u0026cb_isa_unaccel_interface);\ndrivers/gpib/cb7210/cb7210.c:1576:#ifdef CONFIG_GPIB_PCMCIA\ndrivers/gpib/cb7210/cb7210.c-1577-\tgpib_unregister_driver(\u0026cb_pcmcia_interface);\n--\ndrivers/gpib/ines/ines_gpib.c=1063=static struct pci_driver ines_pci_driver = {\n--\ndrivers/gpib/ines/ines_gpib.c-1068-\ndrivers/gpib/ines/ines_gpib.c:1069:#ifdef CONFIG_GPIB_PCMCIA\ndrivers/gpib/ines/ines_gpib.c-1070-\n--\ndrivers/gpib/ines/ines_gpib.c=1467=static void ines_pcmcia_detach(struct gpib_board *board)\n--\ndrivers/gpib/ines/ines_gpib.c-1483-\ndrivers/gpib/ines/ines_gpib.c:1484:#endif /* CONFIG_GPIB_PCMCIA */\ndrivers/gpib/ines/ines_gpib.c-1485-\ndrivers/gpib/ines/ines_gpib.c=1486=static int __init ines_init_module(void)\n--\ndrivers/gpib/ines/ines_gpib.c-1525-\ndrivers/gpib/ines/ines_gpib.c:1526:#ifdef CONFIG_GPIB_PCMCIA\ndrivers/gpib/ines/ines_gpib.c-1527-\tret = gpib_register_driver(\u0026ines_pcmcia_interface, THIS_MODULE);\n--\ndrivers/gpib/ines/ines_gpib.c-1553-\ndrivers/gpib/ines/ines_gpib.c:1554:#ifdef CONFIG_GPIB_PCMCIA\ndrivers/gpib/ines/ines_gpib.c-1555-err_pcmcia_driver:\n--\ndrivers/gpib/ines/ines_gpib.c=1578=static void __exit ines_exit_module(void)\n--\ndrivers/gpib/ines/ines_gpib.c-1584-\tgpib_unregister_driver(\u0026ines_isa_interface);\ndrivers/gpib/ines/ines_gpib.c:1585:#ifdef CONFIG_GPIB_PCMCIA\ndrivers/gpib/ines/ines_gpib.c-1586-\tgpib_unregister_driver(\u0026ines_pcmcia_interface);\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c=1379=MODULE_DEVICE_TABLE(pnp, tnt4882_pnp_table);\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1381-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:1382:#ifdef CONFIG_GPIB_PCMCIA\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1383-static struct gpib_interface ni_pcmcia_interface;\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c=1389=static int __init tnt4882_init_module(void)\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1446-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:1447:#ifdef CONFIG_GPIB_PCMCIA\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1448-\tresult = gpib_register_driver(\u0026ni_pcmcia_interface, THIS_MODULE);\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1470-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:1471:#ifdef CONFIG_GPIB_PCMCIA\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1472-err_pcmcia_driver:\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c=1499=static void __exit tnt4882_exit_module(void)\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1508-\tgpib_unregister_driver(\u0026ni_pci_accel_interface);\ndrivers/gpib/tnt4882/tnt4882_gpib.c:1509:#ifdef CONFIG_GPIB_PCMCIA\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1510-\tgpib_unregister_driver(\u0026ni_pcmcia_interface);\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1519-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:1520:#ifdef CONFIG_GPIB_PCMCIA\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1521-\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c=1815=static struct gpib_interface ni_pcmcia_accel_interface = {\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1842-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:1843:#endif\t// CONFIG_GPIB_PCMCIA\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1844-\n"
}

gemini-3.8-flash

null

null

							input: 43707
							output: 35
							thoughts: 20
						

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

**Navigating the GPIB Driver Configuration**

Okay, so I'm looking into something related to the GPIB driver in the kernel, and the most likely place to start digging is the configuration file. Given my experience, `drivers/gpib/Kconfig` is usually where the meat of the driver's configuration lives. I'm specifically thinking that around line 200, there might be a relevant section. I’ll open that file and see what's defined there, perhaps related to a specific feature, a hardware variant, or some conditional compilation settings. That should provide a useful point to start researching my goal.

{
  "File": "drivers/gpib/Kconfig",
  "FirstLine": 195,
  "LineCount": 25
}

{
  "Contents": " 195:\t\t    PCIGPIB-1 based on Ines iGPIB 72010 chip\n 196:\t\n 197:\t\t To compile this driver as a module, choose M here: the module will be\n 198:\t\t called ines_gpib\n 199:\t\t  called cb7210.\n 200:\t\n 201:\tconfig GPIB_PCMCIA\n 202:\t       def_bool y\n 203:\t       depends on PCMCIA \u0026\u0026 (GPIB_NI_PCI_ISA || GPIB_CB7210 || GPIB_INES)\n 204:\t       help\n 205:\t         Enable PCMCIA/CArdbus support for National Instruments,\n 206:\t\t measurement computing boards and Ines boards.\n 207:\t\n 208:\tconfig GPIB_LPVO\n 209:\t       tristate \"LPVO DIY USB GPIB\"\n 210:\t       select GPIB_COMMON\n 211:\t       depends on USB\n 212:\t       help\n 213:\t         Enable support for LPVO Self-made usb-gpib adapter\n 214:\t\n 215:\t\t To compile this driver as a module, choose M here: the module will be\n 216:\t\t called lpvo_usb_gpib\n 217:\t\n 218:\tconfig GPIB_PC2\n 219:\t       tristate \"PC2 PC2a\"\n"
}

gemini-3.8-flash

null

null

							input: 44300
							output: 52
							thoughts: 414
						

**Debugging a Potential Variable Scope Issue**

Okay, hold on a second. I need to take a closer look at this `drivers/gpib/tnt4882/tnt4882_gpib.c` file. I'm focusing specifically on `ni_gpib_probe`... something feels off. Was `int ret;` actually declared properly in the original code? Looking back, I can't see it declared. The original author clearly introduced this `ret` variable within `ni_gpib_probe`:

```c
static int ni_gpib_probe(struct pcmcia_device *link)
{
	struct local_info_t *info;
	//struct struct gpib_board *dev;
```

That's the issue! They didn't declare `ret`. The addition of the conditional `if` statement is suspect because `ret` isn't declared, let me check the commit messages to understand the intention better.

Darn, no `git log` here. I can however, read the commit details.

`commit b51914c8d024cf200a9a8cfde8592039d4e5c64d`
`syz-cluster: applied patch under review`

Okay, looks like a cluster-applied patch under review. Now I need to know where `ret` is declared. Let's see if there are any global declarations in the file. I will check the file using `grepper` and search for `ret` in the code block between lines 1500 and 1570, so I can see if it was declared outside the function. I bet it wasn't.

{
  "File": "drivers/gpib/tnt4882/tnt4882_gpib.c",
  "FirstLine": 1545,
  "LineCount": 35
}

{
  "Contents": "1545:\t * I think this dev_list is obsolete but the pointer is needed to keep\n1546:\t * the module instance for the ni_pcmcia_attach function.\n1547:\t */\n1548:\t\n1549:\tstatic struct pcmcia_device   *curr_dev;\n1550:\t\n1551:\tstruct local_info_t {\n1552:\t\tstruct pcmcia_device\t*p_dev;\n1553:\t\tstruct gpib_board\t\t*dev;\n1554:\t\tint\t\t\tstop;\n1555:\t\tstruct bus_operations\t*bus;\n1556:\t};\n1557:\t\n1558:\t/*\n1559:\t * ni_gpib_probe() creates an \"instance\" of the driver, allocating\n1560:\t * local data structures for one device.  The device is registered\n1561:\t * with Card Services.\n1562:\t */\n1563:\t\n1564:\tstatic int ni_gpib_probe(struct pcmcia_device *link)\n1565:\t{\n1566:\t\tstruct local_info_t *info;\n1567:\t\t//struct struct gpib_board *dev;\n1568:\t\n1569:\t\t/* Allocate space for private device-specific data */\n1570:\t\tinfo = kzalloc_obj(*info);\n1571:\t\tif (!info)\n1572:\t\t\treturn -ENOMEM;\n1573:\t\n1574:\t\tinfo-\u003ep_dev = link;\n1575:\t\tlink-\u003epriv = info;\n1576:\t\n1577:\t\t/*\n1578:\t\t * General socket configuration defaults can go here.  In this\n1579:\t\t * client, we assume very little, and rely on the CIS for almost\n"
}

gemini-3.8-flash

null

null

							input: 45633
							output: 27
							thoughts: 51
						

**Debugging a Potential GPIB Probe Issue**

Okay, so I'm digging into this `ni_gpib_probe` function, and the first thing that jumps out at me is that `ret` is completely undefined. That's a huge red flag. My immediate thought is, "Wait, is this some preprocessor magic I'm missing? Is `ret` defined as a macro somewhere, maybe in a common header or configuration file?" I need to rule that out immediately. I'm going to run a quick search through the kernel's source code. I need to specifically look for any instance of `#define ret`. That will tell me if someone has sneakily defined `ret` to something else that is valid in the context of this probe function. Gotta eliminate all possibilities before proceeding!

no matches

{
  "Expression": "#define[[:space:]]+ret[[:space:]]"
}

{
  "error": "no matches"
}

gemini-3.8-flash

null

null

							input: 45891
							output: 52
							thoughts: 777
						

**My Triage Thoughts**

Okay, first things first, it's pretty obvious that `ret` is an undeclared variable in `ni_gpib_probe`. That's a red flag, but before I dig into that, I need to take a step back and think more broadly. Can syzkaller even *reach* PCMCIA devices, especially in QEMU? That's the real question.

Let's break this down systematically:

1.  **Reachability:** Is PCMCIA even accessible from within syzkaller/QEMU? That's my initial hurdle.
2.  **Context:** What *is* PCMCIA, fundamentally? What bus does it use? How is `ni_gpib_probe` triggered? Understanding the underlying hardware and driver architecture is crucial.
3.  **Compilation:** Even if PCMCIA *is* reachable, does the code even build? Did the patch compile? Did syzkaller compile the patch or did someone submit a broken patch?

Okay, let me quickly re-familiarize myself with the syzkaller triage philosophy. Let's make sure I'm following the correct guidelines.
*   The primary goal is to find crashes, regressions, exposed bugs, etc.
*   **Reachability is paramount.** Fuzzing is only effective on code that can execute in our standard virtualized environment. Unreachable code is a waste of time. "WorthFuzzing=false" is the call to action!
*   I should never blindly trust "NFCI" (No Functional Change Impact) or "Refactoring" claims.

So, when do I return `WorthFuzzing=false`? The key criteria are:

*   Non-kernel and non-executable changes: docs, user-space, tests, etc.
*   Structurally unreachable hardware: vendor-specific PCIe, SmartNICs, GPUs, etc. that require physical cards not emulated in QEMU.
*   Unreachable execution paths: teardown callbacks that are only executed via physical unplug events, etc.
So, is this PCMCIA code *structurally unreachable*?

Alright, let's investigate the `drivers/gpib/tnt4882/tnt4882_gpib.c` file. The question is: is this hardware structurally unreachable?

To figure this out, let's find out what devices `ni_gpib_probe` is looking for. Let's trace it and see how the driver works. Let's check `ni_gpib_cs_driver` or `pcmcia_driver` (or anything like that) being registered in `drivers/gpib/tnt4882/tnt4882_gpib.c`. Let's read from lines 1780-1845 to get a better idea of how this probe works.

{
  "File": "drivers/gpib/tnt4882/tnt4882_gpib.c",
  "FirstLine": 1780,
  "LineCount": 65
}

{
  "Contents": "1780:\t\t\t\ttnt4882_board_reset(tnt_priv, board);\n1781:\t\t\t\trelease_region(nec_priv-\u003eiobase, pcmcia_gpib_iosize);\n1782:\t\t\t}\n1783:\t\t}\n1784:\t\ttnt4882_free_private(board);\n1785:\t}\n1786:\t\n1787:\tstatic struct gpib_interface ni_pcmcia_interface = {\n1788:\t\t.name = \"ni_pcmcia\",\n1789:\t\t.attach = ni_pcmcia_attach,\n1790:\t\t.detach = ni_pcmcia_detach,\n1791:\t\t.read = tnt4882_accel_read,\n1792:\t\t.write = tnt4882_accel_write,\n1793:\t\t.command = tnt4882_command,\n1794:\t\t.take_control = tnt4882_take_control,\n1795:\t\t.go_to_standby = tnt4882_go_to_standby,\n1796:\t\t.request_system_control = tnt4882_request_system_control,\n1797:\t\t.interface_clear = tnt4882_interface_clear,\n1798:\t\t.remote_enable = tnt4882_remote_enable,\n1799:\t\t.enable_eos = tnt4882_enable_eos,\n1800:\t\t.disable_eos = tnt4882_disable_eos,\n1801:\t\t.parallel_poll = tnt4882_parallel_poll,\n1802:\t\t.parallel_poll_configure = tnt4882_parallel_poll_configure,\n1803:\t\t.parallel_poll_response = tnt4882_parallel_poll_response,\n1804:\t\t.local_parallel_poll_mode = NULL, // XXX\n1805:\t\t.line_status = tnt4882_line_status,\n1806:\t\t.update_status = tnt4882_update_status,\n1807:\t\t.primary_address = tnt4882_primary_address,\n1808:\t\t.secondary_address = tnt4882_secondary_address,\n1809:\t\t.serial_poll_response = tnt4882_serial_poll_response,\n1810:\t\t.serial_poll_status = tnt4882_serial_poll_status,\n1811:\t\t.t1_delay = tnt4882_t1_delay,\n1812:\t\t.return_to_local = tnt4882_return_to_local,\n1813:\t};\n1814:\t\n1815:\tstatic struct gpib_interface ni_pcmcia_accel_interface = {\n1816:\t\t.name = \"ni_pcmcia_accel\",\n1817:\t\t.attach = ni_pcmcia_attach,\n1818:\t\t.detach = ni_pcmcia_detach,\n1819:\t\t.read = tnt4882_accel_read,\n1820:\t\t.write = tnt4882_accel_write,\n1821:\t\t.command = tnt4882_command,\n1822:\t\t.take_control = tnt4882_take_control,\n1823:\t\t.go_to_standby = tnt4882_go_to_standby,\n1824:\t\t.request_system_control = tnt4882_request_system_control,\n1825:\t\t.interface_clear = tnt4882_interface_clear,\n1826:\t\t.remote_enable = tnt4882_remote_enable,\n1827:\t\t.enable_eos = tnt4882_enable_eos,\n1828:\t\t.disable_eos = tnt4882_disable_eos,\n1829:\t\t.parallel_poll = tnt4882_parallel_poll,\n1830:\t\t.parallel_poll_configure = tnt4882_parallel_poll_configure,\n1831:\t\t.parallel_poll_response = tnt4882_parallel_poll_response,\n1832:\t\t.local_parallel_poll_mode = NULL, // XXX\n1833:\t\t.line_status = tnt4882_line_status,\n1834:\t\t.update_status = tnt4882_update_status,\n1835:\t\t.primary_address = tnt4882_primary_address,\n1836:\t\t.secondary_address = tnt4882_secondary_address,\n1837:\t\t.serial_poll_response = tnt4882_serial_poll_response,\n1838:\t\t.serial_poll_status = tnt4882_serial_poll_status,\n1839:\t\t.t1_delay = tnt4882_t1_delay,\n1840:\t\t.return_to_local = tnt4882_return_to_local,\n1841:\t};\n1842:\t\n1843:\t#endif\t// CONFIG_GPIB_PCMCIA\n1844:\t\n"
}

gemini-3.8-flash

null

null

							input: 48719
							output: 52
							thoughts: 25
						

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

**Hunting for the PCMCIA Driver Structure**

Alright, let's get down to brass tacks. I'm trying to pinpoint the specific structure for the PCMCIA driver. My instinct is telling me it's likely defined somewhere in the more core parts of the driver code. I'll need to know where the hooks are.

I suspect that the critical data structures and function pointers related to PCMCIA card management are declared within a specific region. Let's start with line 1640 and scan through to line 1720. That seems like a reasonable block to investigate for the core definition. Hopefully, the driver struct declaration is clearly labeled there. Let's see if this hunch pans out.

{
  "File": "drivers/gpib/tnt4882/tnt4882_gpib.c",
  "FirstLine": 1640,
  "LineCount": 60
}

{
  "Contents": "1640:\t\t\tdev_warn(\u0026link-\u003edev, \"no configuration found\\n\");\n1641:\t\t\tni_gpib_release(link);\n1642:\t\t\treturn last_ret;\n1643:\t\t}\n1644:\t\n1645:\t\tlast_ret = pcmcia_enable_device(link);\n1646:\t\tif (last_ret) {\n1647:\t\t\tni_gpib_release(link);\n1648:\t\t\treturn last_ret;\n1649:\t\t}\n1650:\t\treturn 0;\n1651:\t} /* ni_gpib_config */\n1652:\t\n1653:\t/*\n1654:\t * After a card is removed, ni_gpib_release() will unregister the\n1655:\t * device, and release the PCMCIA configuration.  If the device is\n1656:\t * still open, this will be postponed until it is closed.\n1657:\t */\n1658:\tstatic void ni_gpib_release(struct pcmcia_device *link)\n1659:\t{\n1660:\t\tpcmcia_disable_device(link);\n1661:\t} /* ni_gpib_release */\n1662:\t\n1663:\tstatic int ni_gpib_suspend(struct pcmcia_device *link)\n1664:\t{\n1665:\t\t//struct local_info_t *info = link-\u003epriv;\n1666:\t\t//struct struct gpib_board *dev = info-\u003edev;\n1667:\t\n1668:\t\tif (link-\u003eopen)\n1669:\t\t\tdev_warn(\u0026link-\u003edev, \"Device still open\\n\");\n1670:\t\t//netif_device_detach(dev);\n1671:\t\n1672:\t\treturn 0;\n1673:\t}\n1674:\t\n1675:\tstatic int ni_gpib_resume(struct pcmcia_device *link)\n1676:\t{\n1677:\t\t//struct local_info_t *info = link-\u003epriv;\n1678:\t\t//struct struct gpib_board *dev = info-\u003edev;\n1679:\t\n1680:\t\t/*if (link-\u003eopen) {\n1681:\t\t *\tni_gpib_probe(dev);\t/ really?\n1682:\t\t *\t//netif_device_attach(dev);\n1683:\t\t *}\n1684:\t\t */\n1685:\t\treturn ni_gpib_config(link);\n1686:\t}\n1687:\t\n1688:\tstatic struct pcmcia_device_id ni_pcmcia_ids[] = {\n1689:\t\tPCMCIA_DEVICE_MANF_CARD(0x010b, 0x4882),\n1690:\t\tPCMCIA_DEVICE_MANF_CARD(0x010b, 0x0c71), // NI PCMCIA-GPIB+\n1691:\t\tPCMCIA_DEVICE_NULL\n1692:\t};\n1693:\t\n1694:\tMODULE_DEVICE_TABLE(pcmcia, ni_pcmcia_ids);\n1695:\t\n1696:\tstatic struct pcmcia_driver ni_gpib_cs_driver = {\n1697:\t\t.name           = \"ni_gpib_cs\",\n1698:\t\t.owner\t\t= THIS_MODULE,\n1699:\t\t.drv = { .name = \"ni_gpib_cs\", },\n"
}

gemini-3.8-flash

null

null

							input: 49900
							output: 20
							thoughts: 778
						

**Analysis of the ni_gpib_cs Driver and Reachability**

Okay, let's break this down. First, I'm looking at the `ni_gpib_cs_driver` and specifically the `ni_gpib_probe` function. This is a PCMCIA driver, so we're talking about a legacy hardware interface, a 16-bit PCMCIA PC Card. My immediate thought is, can this be triggered or emulated in a virtualized environment like GCE or QEMU? And the answer is a resounding no, because PCMCIA support is either non-existent or highly limited to obsolete ARM boards in QEMU. On amd64, which is our target, QEMU doesn't offer PCMCIA emulation. Also, syzkaller doesn't support PCMCIA device fuzzing at all. We have USB, Bluetooth, WiFi, and so on, but nothing for PCMCIA.

This brings us to the crux of the issue: reachability. We know from the prompt that we're dealing with structurally unreachable hardware, and this PCMCIA card driver definitely falls into that category. The prompt is very clear: we can only fuzz code that *can* actually execute in standard virtualized environments. If the code is structurally unreachable, we're not touching it, regardless of its complexity or whether it has assertions.

So, the next question is, can `ni_gpib_probe` be triggered through another means, like ioctl calls or sysfs? We need to verify that there are no entry points through another emulated path. But based on the code, `ni_gpib_probe` is only called when a PCMCIA card with specific manufacturer and card IDs (0x010b/0x4882 or 0x010b/0x0c71) is *physically* inserted. This is hard-wired to hardware we don't have.

We've established that the driver's probe function is inherently unreachable in our target virtualized environments. Thus, it should not be fuzzed, as per the guidelines. I'll need to confirm that `ni_gpib_probe` isn't called from anywhere else in the code base before confirming this conclusion.

{
  "Expression": "ni_gpib_probe"
}

{
  "Output": "drivers/gpib/ines/ines_gpib.c=1272=static int ines_gpib_resume(struct pcmcia_device *link)\n--\ndrivers/gpib/ines/ines_gpib.c-1277-\t/*if (link-\u003eopen) {\ndrivers/gpib/ines/ines_gpib.c:1278:\t *\tni_gpib_probe(dev);\t/ really?\ndrivers/gpib/ines/ines_gpib.c-1279-\t *\t//netif_device_attach(dev);\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c=1551=struct local_info_t {\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1558-/*\ndrivers/gpib/tnt4882/tnt4882_gpib.c:1559: * ni_gpib_probe() creates an \"instance\" of the driver, allocating\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1560- * local data structures for one device.  The device is registered\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1563-\ndrivers/gpib/tnt4882/tnt4882_gpib.c:1564:static int ni_gpib_probe(struct pcmcia_device *link)\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1565-{\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c=1675=static int ni_gpib_resume(struct pcmcia_device *link)\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1680-\t/*if (link-\u003eopen) {\ndrivers/gpib/tnt4882/tnt4882_gpib.c:1681:\t *\tni_gpib_probe(dev);\t/ really?\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1682-\t *\t//netif_device_attach(dev);\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c=1696=static struct pcmcia_driver ni_gpib_cs_driver = {\n--\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1700-\t.id_table\t= ni_pcmcia_ids,\ndrivers/gpib/tnt4882/tnt4882_gpib.c:1701:\t.probe\t\t= ni_gpib_probe,\ndrivers/gpib/tnt4882/tnt4882_gpib.c-1702-\t.remove\t\t= ni_gpib_remove,\n"
}

gemini-3.8-flash

null

null

							input: 51966
							output: 138
							thoughts: 539
						

**Analysis of the Target for Fuzzing**

Okay, let's break this down. My initial assessment is that `ni_gpib_probe` is a static function, exclusively assigned to `ni_gpib_cs_driver.probe`. The critical point is that it's only invoked by the PCMCIA core when a corresponding physical PCMCIA device is physically present in a PCMCIA socket. This raises an immediate red flag.

First, I need to confirm: Is PCMCIA hardware even emulated in the QEMU or Google Compute Engine environments, specifically on amd64 architecture? No, it isn't. PCMCIA is structurally unreachable within these virtualized settings.

Second, I must check: Is `ni_gpib_probe` called during teardown or through some inaccessible paths within the driver? No, it functions as the probe callback for a *physical* PCMCIA device, specifically `PCMCIA_DEVICE_MANF_CARD(0x010b, 0x4882)`. Furthermore, there is a likely compiler issue with the current state of `ni_gpib_probe`, as the return value `ret` isn't declared, and if `CONFIG_GPIB_PCMCIA` is defined, the code won't compile. Even if by some chance it did compile, we are looking at structurally unreachable hardware.

Therefore, given these factors, I'm confident that `WorthFuzzing` is definitively `false`.

Now, let's thoroughly verify the negative criteria to solidify this conclusion. Specifically, we're considering structurally unreachable hardware, such as vendor-specific PCIe switches, SmartNICs, or GPU drivers (like mlxsw, pds_core, qed, ionic, and amdgpu) that depend on physical ASIC/PCIe cards not emulated in standard QEMU. Here, `ni_gpib_probe` is precisely the probe function for *specific* National Instruments PCMCIA GPIB cards (`ni_gpib_cs_driver`). PCMCIA hardware and these specific cards cannot be emulated or attached in the typical QEMU/GCE test environments on amd64, effectively rendering this code structurally unreachable.

Now, let's prepare the call to `set-results`. Based on my analysis:

*   `WorthFuzzing`: `false`
*   `Reasoning`: The patch modifies the probe error path within the National Instruments PCMCIA GPIB driver (`ni_gpib_cs`) through `ni_gpib_probe`. This code relies on physical PCMCIA GPIB hardware, which is inaccessible and not emulated in standard QEMU/GCE virtualized test environments on amd64, making it structurally unreachable for fuzzing.
*   `FocusSymbols`: `[]` (empty list)
*   `EnableConfigs`: `[]` (empty list)

Finally, I'm going to verify that all the requirements for setting the results are met. Yep, everything looks good. Let's call `set-results`.

{
  "EnableConfigs": [],
  "FocusSymbols": [],
  "Reasoning": "The patch modifies error handling in ni_gpib_probe() in drivers/gpib/tnt4882/tnt4882_gpib.c. This is the probe function for a PCMCIA device driver (ni_gpib_cs_driver) targeting specific National Instruments PCMCIA GPIB cards. Physical PCMCIA hardware and devices are structurally unreachable in standard QEMU or GCE virtualized environments on amd64. Therefore, this code is not worth fuzzing.",
  "WorthFuzzing": false
}

{
  "EnableConfigs": null,
  "FocusSymbols": [],
  "Reasoning": "The patch modifies error handling in ni_gpib_probe() in drivers/gpib/tnt4882/tnt4882_gpib.c. This is the probe function for a PCMCIA device driver (ni_gpib_cs_driver) targeting specific National Instruments PCMCIA GPIB cards. Physical PCMCIA hardware and devices are structurally unreachable in standard QEMU or GCE virtualized environments on amd64. Therefore, this code is not worth fuzzing.",
  "WorthFuzzing": false
}

{
  "WorthFuzzing": false
}

null