| Seq | Timestamp | Type | Name | Duration |
|---|---|---|---|---|
| 0/0 | 2026/09/16 07:39 | flow | patch-triage |
6mArgs:null Results: {
"EnableConfigs": null,
"FocusSymbols": [],
"KMSANReasoning": "",
"NeedsKMSAN": false,
"Reasoning": "The patch modifies ov5640_probe in drivers/media/i2c/ov5640.c, which is a driver for the OmniVision OV5640 I2C camera sensor. This driver depends on Device Tree (CONFIG_OF) and physical camera hardware, neither of which is present or emulated in standard virtualized fuzzing environments (QEMU/GCE on amd64). The modified probe path is structurally unreachable.",
"WorthFuzzing": false
} |
| 1/1 | 2026/09/16 07:39 | action | read-patch-diff |
0mArgs:null Results: {
"PatchDiff": "commit 885ab868f475fb758789d3a84381cae107d3de19\nAuthor: syz-cluster \u003ctriage@syzkaller.com\u003e\nDate: Wed Sep 16 07:39:40 2026 +0000\n\n syz-cluster: applied patch under review\n\ndiff --git a/drivers/media/i2c/ov5640.c b/drivers/media/i2c/ov5640.c\nindex 8deb5f5501faf..36c8bb345d8b7 100644\n--- a/drivers/media/i2c/ov5640.c\n+++ b/drivers/media/i2c/ov5640.c\n@@ -3930,12 +3930,12 @@ static int ov5640_probe(struct i2c_client *client)\n \tif (ret)\n \t\treturn ret;\n \n+\tmutex_init(\u0026sensor-\u003elock);\n+\n \tret = ov5640_get_regulators(sensor);\n \tif (ret)\n \t\tgoto entity_cleanup;\n \n-\tmutex_init(\u0026sensor-\u003elock);\n-\n \tret = ov5640_init_controls(sensor);\n \tif (ret)\n \t\tgoto entity_cleanup;\n"
} |
| 2/1 | 2026/09/16 07:39 | agent | patch-evaluator |
6mModel:core Args: null Results: {
"EnableConfigs": null,
"FocusSymbols": [],
"Reasoning": "The patch modifies ov5640_probe in drivers/media/i2c/ov5640.c, which is a driver for the OmniVision OV5640 I2C camera sensor. This driver depends on Device Tree (CONFIG_OF) and physical camera hardware, neither of which is present or emulated in standard virtualized fuzzing environments (QEMU/GCE on amd64). The modified probe path is structurally unreachable.",
"WorthFuzzing": false
}Instruction: 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.
Prompt: Target architecture: amd64
For your convenience, here is the diff of the changes:
commit 885ab868f475fb758789d3a84381cae107d3de19
Author: syz-cluster <triage@syzkaller.com>
Date: Wed Sep 16 07:39:40 2026 +0000
syz-cluster: applied patch under review
diff --git a/drivers/media/i2c/ov5640.c b/drivers/media/i2c/ov5640.c
index 8deb5f5501faf..36c8bb345d8b7 100644
--- a/drivers/media/i2c/ov5640.c
+++ b/drivers/media/i2c/ov5640.c
@@ -3930,12 +3930,12 @@ static int ov5640_probe(struct i2c_client *client)
if (ret)
return ret;
+ mutex_init(&sensor->lock);
+
ret = ov5640_get_regulators(sensor);
if (ret)
goto entity_cleanup;
- mutex_init(&sensor->lock);
-
ret = ov5640_init_controls(sensor);
if (ret)
goto entity_cleanup;
|
| 3/2 | 2026/09/16 07:39 | llm | patch-evaluator |
0mModel:gemini-3.8-flash Args: null Results: null Tokens: input: 2916 output: 44 thoughts: 269 Thoughts: **Analyzing a Camera Sensor Driver Patch** Okay, first things first, I need to understand this patch. It looks like we're dealing with a modification to `drivers/media/i2c/ov5640.c`. Ah, an I2C camera sensor driver, the OV5640. Right, I know that one, usually found in a fair amount of embedded systems. Let's focus on the `ov5640_probe` function. The key change seems to be the initialization of the mutex `sensor->lock`. Now, it's been moved. It looks like the original code had the mutex being initialized after getting the regulators, but now it's initialized before. I need to understand *why* this change was made. Was there a potential race condition being addressed here? Or perhaps some subtle resource locking issue? I need to think through the possible scenarios where this placement would make a difference. I'll quickly look over the `ov5640_probe` function itself, the `ov5640_get_regulators` function, and `ov5640_init_controls` to see if there's any obvious interaction between them that would necessitate this change. I'll check the source code around those functions with `read-file` or `grepper` and see if there are any obvious use cases to consider. I'll need to figure out if this driver is even used, or if it is even reachable or requires specific physical hardware. |
| 4/2 | 2026/09/16 07:40 | tool | read-file |
0mArgs:{
"File": "drivers/media/i2c/ov5640.c",
"FirstLine": 3920,
"LineCount": 50
}Results: {
"Contents": "3920:\t\t\treturn PTR_ERR(sensor-\u003ereset_gpio);\n3921:\t\n3922:\t\tv4l2_i2c_subdev_init(\u0026sensor-\u003esd, client, \u0026ov5640_subdev_ops);\n3923:\t\tsensor-\u003esd.internal_ops = \u0026ov5640_internal_ops;\n3924:\t\n3925:\t\tsensor-\u003esd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE |\n3926:\t\t\t\t V4L2_SUBDEV_FL_HAS_EVENTS;\n3927:\t\tsensor-\u003epad.flags = MEDIA_PAD_FL_SOURCE;\n3928:\t\tsensor-\u003esd.entity.function = MEDIA_ENT_F_CAM_SENSOR;\n3929:\t\tret = media_entity_pads_init(\u0026sensor-\u003esd.entity, 1, \u0026sensor-\u003epad);\n3930:\t\tif (ret)\n3931:\t\t\treturn ret;\n3932:\t\n3933:\t\tmutex_init(\u0026sensor-\u003elock);\n3934:\t\n3935:\t\tret = ov5640_get_regulators(sensor);\n3936:\t\tif (ret)\n3937:\t\t\tgoto entity_cleanup;\n3938:\t\n3939:\t\tret = ov5640_init_controls(sensor);\n3940:\t\tif (ret)\n3941:\t\t\tgoto entity_cleanup;\n3942:\t\n3943:\t\tret = ov5640_sensor_resume(dev);\n3944:\t\tif (ret) {\n3945:\t\t\tdev_err(dev, \"failed to power on\\n\");\n3946:\t\t\tgoto free_ctrls;\n3947:\t\t}\n3948:\t\n3949:\t\tpm_runtime_set_active(dev);\n3950:\t\tpm_runtime_get_noresume(dev);\n3951:\t\tpm_runtime_enable(dev);\n3952:\t\n3953:\t\tret = ov5640_check_chip_id(sensor);\n3954:\t\tif (ret)\n3955:\t\t\tgoto err_pm_runtime;\n3956:\t\n3957:\t\tret = v4l2_async_register_subdev_sensor(\u0026sensor-\u003esd);\n3958:\t\tif (ret)\n3959:\t\t\tgoto err_pm_runtime;\n3960:\t\n3961:\t\tpm_runtime_set_autosuspend_delay(dev, 1000);\n3962:\t\tpm_runtime_use_autosuspend(dev);\n3963:\t\tpm_runtime_put_autosuspend(dev);\n3964:\t\n3965:\t\treturn 0;\n3966:\t\n3967:\terr_pm_runtime:\n3968:\t\tpm_runtime_put_noidle(dev);\n3969:\t\tpm_runtime_disable(dev);\n"
} |
| 5/2 | 2026/09/16 07:40 | llm | patch-evaluator |
0mModel:gemini-3.8-flash Args: null Results: null Tokens: input: 4332 output: 44 thoughts: 17 Thoughts: Here's my attempt at summarizing the thought process, tailored for an expert audience and written in the first person: **Decoding `entity_cleanup`** Okay, so I'm looking at this `entity_cleanup` label... Let's break this down. My initial reaction is, "What specifically *does* this do?" I'm immediately trying to get a handle on the function or process it describes. Is it a preprocessing step, a post-processing routine, or something else entirely? Does it modify the entities themselves, or just flag them for later action? Knowing the overall architecture, I'm already anticipating its position within the workflow – is it upstream of the core inference engine, or a downstream optimization? I need context! What kind of entities are we dealing with? Textual mentions, database objects, something else? The data type here will inform my assumptions about its behavior. I'm also considering potential edge cases: does it handle ambiguity, conflicting information, or noise? Understanding those failure points is key. I'm hoping there's documentation I can jump to; otherwise, I'll need to dig into the surrounding code to determine its specific implementation. |
| 6/2 | 2026/09/16 07:40 | tool | read-file |
0mArgs:{
"File": "drivers/media/i2c/ov5640.c",
"FirstLine": 3965,
"LineCount": 25
}Results: {
"Contents": "3965:\t\treturn 0;\n3966:\t\n3967:\terr_pm_runtime:\n3968:\t\tpm_runtime_put_noidle(dev);\n3969:\t\tpm_runtime_disable(dev);\n3970:\t\tov5640_sensor_suspend(dev);\n3971:\tfree_ctrls:\n3972:\t\tv4l2_ctrl_handler_free(\u0026sensor-\u003ectrls.handler);\n3973:\tentity_cleanup:\n3974:\t\tmedia_entity_cleanup(\u0026sensor-\u003esd.entity);\n3975:\t\tmutex_destroy(\u0026sensor-\u003elock);\n3976:\t\treturn ret;\n3977:\t}\n3978:\t\n3979:\tstatic void ov5640_remove(struct i2c_client *client)\n3980:\t{\n3981:\t\tstruct v4l2_subdev *sd = i2c_get_clientdata(client);\n3982:\t\tstruct ov5640_dev *sensor = to_ov5640_dev(sd);\n3983:\t\tstruct device *dev = \u0026client-\u003edev;\n3984:\t\n3985:\t\tpm_runtime_disable(dev);\n3986:\t\tif (!pm_runtime_status_suspended(dev))\n3987:\t\t\tov5640_sensor_suspend(dev);\n3988:\t\tpm_runtime_set_suspended(dev);\n3989:\t\n"
} |
| 7/2 | 2026/09/16 07:40 | llm | patch-evaluator |
0mModel:gemini-3.8-flash Args: null Results: null Tokens: input: 5036 output: 41 thoughts: 212 Thoughts: **Debugging and Understanding the OV5640 Driver Initialization** Okay, let's break this down. Line 3975... ah, the `entity_cleanup:` label. The critical bit is right there: `mutex_destroy(&sensor->lock)`. If `ov5640_get_regulators(sensor)` fails, we jump to that label. The problem, as I see it, is that we're potentially destroying a mutex (`sensor->lock`) *before* it's been properly initialized! That's a classic race condition and a recipe for headaches. The fix is simple: Move the `mutex_init(&sensor->lock)` *before* the call to `ov5640_get_regulators(sensor)`. Makes perfect sense. Initialize the mutex *first*. Brilliant. Now, let's think about the broader picture. How can we actually *trigger* this `ov5640` driver? Is this something we could reproduce and debug with syzkaller? Or maybe a standard virtualized environment like QEMU or GCE? I need to understand the instantiation pathway. Where is `ov5640_probe` being called from? I need to check the ID tables or whatever mechanism is used to register and initialize the i2c clients. Time to dive into the source code, specifically `drivers/media/i2c/ov5640.c`. Let's see how this thing gets off the ground. |
| 8/2 | 2026/09/16 07:40 | tool | grepper |
0mArgs:{
"Expression": "ov5640_",
"PathPrefix": "drivers/media/i2c/ov5640.c"
}Results: {
"Output": "\nFull output is too long, showing 500 out of 1624 lines.\nUse more precise expression if possible.\n\ndrivers/media/i2c/ov5640.c-120-\ndrivers/media/i2c/ov5640.c:121:enum ov5640_mode_id {\ndrivers/media/i2c/ov5640.c-122-\tOV5640_MODE_QQVGA_160_120 = 0,\n--\ndrivers/media/i2c/ov5640.c-134-\ndrivers/media/i2c/ov5640.c:135:enum ov5640_frame_rate {\ndrivers/media/i2c/ov5640.c-136-\tOV5640_15_FPS = 0,\n--\ndrivers/media/i2c/ov5640.c-141-\ndrivers/media/i2c/ov5640.c:142:enum ov5640_pixel_rate_id {\ndrivers/media/i2c/ov5640.c-143-\tOV5640_PIXEL_RATE_168M,\n--\ndrivers/media/i2c/ov5640.c-156- */\ndrivers/media/i2c/ov5640.c:157:static const u32 ov5640_pixel_rates[] = {\ndrivers/media/i2c/ov5640.c-158-\t[OV5640_PIXEL_RATE_168M] = 168000000,\n--\ndrivers/media/i2c/ov5640.c-172- */\ndrivers/media/i2c/ov5640.c:173:static const s64 ov5640_csi2_link_freqs[] = {\ndrivers/media/i2c/ov5640.c-174-\t992000000, 888000000, 768000000, 744000000, 672000000, 672000000,\n--\ndrivers/media/i2c/ov5640.c-182-\ndrivers/media/i2c/ov5640.c:183:enum ov5640_format_mux {\ndrivers/media/i2c/ov5640.c-184-\tOV5640_FMT_MUX_YUV422 = 0,\n--\ndrivers/media/i2c/ov5640.c-191-\ndrivers/media/i2c/ov5640.c:192:struct ov5640_pixfmt {\ndrivers/media/i2c/ov5640.c-193-\tu32 code;\n--\ndrivers/media/i2c/ov5640.c-196-\tu8 ctrl00;\ndrivers/media/i2c/ov5640.c:197:\tenum ov5640_format_mux mux;\ndrivers/media/i2c/ov5640.c-198-};\ndrivers/media/i2c/ov5640.c-199-\ndrivers/media/i2c/ov5640.c:200:static const struct ov5640_pixfmt ov5640_dvp_formats[] = {\ndrivers/media/i2c/ov5640.c-201-\t{\n--\ndrivers/media/i2c/ov5640.c-267-\ndrivers/media/i2c/ov5640.c:268:static const struct ov5640_pixfmt ov5640_csi2_formats[] = {\ndrivers/media/i2c/ov5640.c-269-\t{\n--\ndrivers/media/i2c/ov5640.c=342=MODULE_PARM_DESC(virtual_channel,\n--\ndrivers/media/i2c/ov5640.c-344-\ndrivers/media/i2c/ov5640.c:345:static const int ov5640_framerates[] = {\ndrivers/media/i2c/ov5640.c-346-\t[OV5640_15_FPS] = 15,\n--\ndrivers/media/i2c/ov5640.c-351-/* regulator supplies */\ndrivers/media/i2c/ov5640.c:352:static const char * const ov5640_supply_name[] = {\ndrivers/media/i2c/ov5640.c-353-\t\"DOVDD\", /* Digital I/O (1.8V) supply */\n--\ndrivers/media/i2c/ov5640.c-357-\ndrivers/media/i2c/ov5640.c:358:#define OV5640_NUM_SUPPLIES ARRAY_SIZE(ov5640_supply_name)\ndrivers/media/i2c/ov5640.c-359-\n--\ndrivers/media/i2c/ov5640.c-363- */\ndrivers/media/i2c/ov5640.c:364:enum ov5640_downsize_mode {\ndrivers/media/i2c/ov5640.c-365-\tSUBSAMPLING,\n--\ndrivers/media/i2c/ov5640.c=369=struct reg_value {\n--\ndrivers/media/i2c/ov5640.c-375-\ndrivers/media/i2c/ov5640.c:376:struct ov5640_timings {\ndrivers/media/i2c/ov5640.c-377-\t/* Analog crop rectangle. */\n--\ndrivers/media/i2c/ov5640.c-386-\ndrivers/media/i2c/ov5640.c:387:struct ov5640_mode_info {\ndrivers/media/i2c/ov5640.c:388:\tenum ov5640_mode_id id;\ndrivers/media/i2c/ov5640.c:389:\tenum ov5640_downsize_mode dn_mode;\ndrivers/media/i2c/ov5640.c:390:\tenum ov5640_pixel_rate_id pixel_rate;\ndrivers/media/i2c/ov5640.c-391-\n--\ndrivers/media/i2c/ov5640.c-394-\ndrivers/media/i2c/ov5640.c:395:\tstruct ov5640_timings dvp_timings;\ndrivers/media/i2c/ov5640.c:396:\tstruct ov5640_timings csi2_timings;\ndrivers/media/i2c/ov5640.c-397-\n--\ndrivers/media/i2c/ov5640.c-405-\ndrivers/media/i2c/ov5640.c:406:struct ov5640_ctrls {\ndrivers/media/i2c/ov5640.c-407-\tstruct v4l2_ctrl_handler handler;\n--\ndrivers/media/i2c/ov5640.c-434-\ndrivers/media/i2c/ov5640.c:435:struct ov5640_dev {\ndrivers/media/i2c/ov5640.c-436-\tstruct i2c_client *i2c_client;\n--\ndrivers/media/i2c/ov5640.c-453-\ndrivers/media/i2c/ov5640.c:454:\tconst struct ov5640_mode_info *current_mode;\ndrivers/media/i2c/ov5640.c:455:\tconst struct ov5640_mode_info *last_mode;\ndrivers/media/i2c/ov5640.c:456:\tenum ov5640_frame_rate current_fr;\ndrivers/media/i2c/ov5640.c-457-\tstruct v4l2_fract frame_interval;\n--\ndrivers/media/i2c/ov5640.c-459-\ndrivers/media/i2c/ov5640.c:460:\tstruct ov5640_ctrls ctrls;\ndrivers/media/i2c/ov5640.c-461-\n--\ndrivers/media/i2c/ov5640.c-468-\ndrivers/media/i2c/ov5640.c:469:static inline struct ov5640_dev *to_ov5640_dev(struct v4l2_subdev *sd)\ndrivers/media/i2c/ov5640.c-470-{\ndrivers/media/i2c/ov5640.c:471:\treturn container_of(sd, struct ov5640_dev, sd);\ndrivers/media/i2c/ov5640.c-472-}\n--\ndrivers/media/i2c/ov5640.c=474=static inline struct v4l2_subdev *ctrl_to_sd(struct v4l2_ctrl *ctrl)\ndrivers/media/i2c/ov5640.c-475-{\ndrivers/media/i2c/ov5640.c:476:\treturn \u0026container_of(ctrl-\u003ehandler, struct ov5640_dev,\ndrivers/media/i2c/ov5640.c-477-\t\t\t ctrls.handler)-\u003esd;\n--\ndrivers/media/i2c/ov5640.c-479-\ndrivers/media/i2c/ov5640.c:480:static inline bool ov5640_is_csi2(const struct ov5640_dev *sensor)\ndrivers/media/i2c/ov5640.c-481-{\n--\ndrivers/media/i2c/ov5640.c-484-\ndrivers/media/i2c/ov5640.c:485:static inline const struct ov5640_pixfmt *\ndrivers/media/i2c/ov5640.c:486:ov5640_formats(struct ov5640_dev *sensor)\ndrivers/media/i2c/ov5640.c-487-{\ndrivers/media/i2c/ov5640.c:488:\treturn ov5640_is_csi2(sensor) ? ov5640_csi2_formats\ndrivers/media/i2c/ov5640.c:489:\t\t\t\t : ov5640_dvp_formats;\ndrivers/media/i2c/ov5640.c-490-}\ndrivers/media/i2c/ov5640.c-491-\ndrivers/media/i2c/ov5640.c:492:static const struct ov5640_pixfmt *\ndrivers/media/i2c/ov5640.c:493:ov5640_code_to_pixfmt(struct ov5640_dev *sensor, u32 code)\ndrivers/media/i2c/ov5640.c-494-{\ndrivers/media/i2c/ov5640.c:495:\tconst struct ov5640_pixfmt *formats = ov5640_formats(sensor);\ndrivers/media/i2c/ov5640.c-496-\tunsigned int i;\n--\ndrivers/media/i2c/ov5640.c-505-\ndrivers/media/i2c/ov5640.c:506:static u32 ov5640_code_to_bpp(struct ov5640_dev *sensor, u32 code)\ndrivers/media/i2c/ov5640.c-507-{\ndrivers/media/i2c/ov5640.c:508:\tconst struct ov5640_pixfmt *format = ov5640_code_to_pixfmt(sensor,\ndrivers/media/i2c/ov5640.c-509-\t\t\t\t\t\t\t\t code);\n--\ndrivers/media/i2c/ov5640.c-522-\ndrivers/media/i2c/ov5640.c:523:static const struct v4l2_mbus_framefmt ov5640_csi2_default_fmt = {\ndrivers/media/i2c/ov5640.c-524-\t.code = MEDIA_BUS_FMT_UYVY8_1X16,\n--\ndrivers/media/i2c/ov5640.c-533-\ndrivers/media/i2c/ov5640.c:534:static const struct v4l2_mbus_framefmt ov5640_dvp_default_fmt = {\ndrivers/media/i2c/ov5640.c-535-\t.code = MEDIA_BUS_FMT_UYVY8_2X8,\n--\ndrivers/media/i2c/ov5640.c-544-\ndrivers/media/i2c/ov5640.c:545:static const struct reg_value ov5640_init_setting[] = {\ndrivers/media/i2c/ov5640.c-546-\t{0x3103, 0x11, 0, 0},\n--\ndrivers/media/i2c/ov5640.c-622-\ndrivers/media/i2c/ov5640.c:623:static const struct reg_value ov5640_setting_low_res[] = {\ndrivers/media/i2c/ov5640.c-624-\t{0x3c07, 0x08, 0, 0},\n--\ndrivers/media/i2c/ov5640.c-637-\ndrivers/media/i2c/ov5640.c:638:static const struct reg_value ov5640_setting_720P_1280_720[] = {\ndrivers/media/i2c/ov5640.c-639-\t{0x3c07, 0x07, 0, 0},\n--\ndrivers/media/i2c/ov5640.c-652-\ndrivers/media/i2c/ov5640.c:653:static const struct reg_value ov5640_setting_1080P_1920_1080[] = {\ndrivers/media/i2c/ov5640.c-654-\t{0x3c07, 0x08, 0, 0},\n--\ndrivers/media/i2c/ov5640.c-676-\ndrivers/media/i2c/ov5640.c:677:static const struct reg_value ov5640_setting_QSXGA_2592_1944[] = {\ndrivers/media/i2c/ov5640.c-678-\t{0x3c07, 0x08, 0, 0},\n--\ndrivers/media/i2c/ov5640.c-691-\ndrivers/media/i2c/ov5640.c:692:static const struct ov5640_mode_info ov5640_mode_data[OV5640_NUM_MODES] = {\ndrivers/media/i2c/ov5640.c-693-\t{\n--\ndrivers/media/i2c/ov5640.c-733-\t\t},\ndrivers/media/i2c/ov5640.c:734:\t\t.reg_data\t= ov5640_setting_low_res,\ndrivers/media/i2c/ov5640.c:735:\t\t.reg_data_size\t= ARRAY_SIZE(ov5640_setting_low_res),\ndrivers/media/i2c/ov5640.c-736-\t\t.max_fps\t= OV5640_30_FPS,\n--\ndrivers/media/i2c/ov5640.c-778-\t\t},\ndrivers/media/i2c/ov5640.c:779:\t\t.reg_data\t= ov5640_setting_low_res,\ndrivers/media/i2c/ov5640.c:780:\t\t.reg_data_size\t= ARRAY_SIZE(ov5640_setting_low_res),\ndrivers/media/i2c/ov5640.c-781-\t\t.max_fps\t= OV5640_30_FPS,\n--\ndrivers/media/i2c/ov5640.c-823-\t\t},\ndrivers/media/i2c/ov5640.c:824:\t\t.reg_data\t= ov5640_setting_low_res,\ndrivers/media/i2c/ov5640.c:825:\t\t.reg_data_size\t= ARRAY_SIZE(ov5640_setting_low_res),\ndrivers/media/i2c/ov5640.c-826-\t\t.max_fps\t= OV5640_30_FPS,\n--\ndrivers/media/i2c/ov5640.c-868-\t\t},\ndrivers/media/i2c/ov5640.c:869:\t\t.reg_data\t= ov5640_setting_low_res,\ndrivers/media/i2c/ov5640.c:870:\t\t.reg_data_size\t= ARRAY_SIZE(ov5640_setting_low_res),\ndrivers/media/i2c/ov5640.c-871-\t\t.max_fps\t= OV5640_60_FPS,\n--\ndrivers/media/i2c/ov5640.c-912-\t\t},\ndrivers/media/i2c/ov5640.c:913:\t\t.reg_data\t= ov5640_setting_low_res,\ndrivers/media/i2c/ov5640.c:914:\t\t.reg_data_size\t= ARRAY_SIZE(ov5640_setting_low_res),\ndrivers/media/i2c/ov5640.c-915-\t\t.max_fps\t= OV5640_30_FPS,\n--\ndrivers/media/i2c/ov5640.c-956-\t\t},\ndrivers/media/i2c/ov5640.c:957:\t\t.reg_data\t= ov5640_setting_low_res,\ndrivers/media/i2c/ov5640.c:958:\t\t.reg_data_size\t= ARRAY_SIZE(ov5640_setting_low_res),\ndrivers/media/i2c/ov5640.c-959-\t\t.max_fps\t= OV5640_30_FPS,\n--\ndrivers/media/i2c/ov5640.c-999-\t\t},\ndrivers/media/i2c/ov5640.c:1000:\t\t.reg_data\t= ov5640_setting_low_res,\ndrivers/media/i2c/ov5640.c:1001:\t\t.reg_data_size\t= ARRAY_SIZE(ov5640_setting_low_res),\ndrivers/media/i2c/ov5640.c-1002-\t\t.max_fps\t= OV5640_30_FPS,\n--\ndrivers/media/i2c/ov5640.c-1042-\t\t},\ndrivers/media/i2c/ov5640.c:1043:\t\t.reg_data\t= ov5640_setting_720P_1280_720,\ndrivers/media/i2c/ov5640.c:1044:\t\t.reg_data_size\t= ARRAY_SIZE(ov5640_setting_720P_1280_720),\ndrivers/media/i2c/ov5640.c-1045-\t\t.max_fps\t= OV5640_30_FPS,\n--\ndrivers/media/i2c/ov5640.c-1087-\t\t},\ndrivers/media/i2c/ov5640.c:1088:\t\t.reg_data\t= ov5640_setting_1080P_1920_1080,\ndrivers/media/i2c/ov5640.c:1089:\t\t.reg_data_size\t= ARRAY_SIZE(ov5640_setting_1080P_1920_1080),\ndrivers/media/i2c/ov5640.c-1090-\t\t.max_fps\t= OV5640_30_FPS,\n--\ndrivers/media/i2c/ov5640.c-1131-\t\t},\ndrivers/media/i2c/ov5640.c:1132:\t\t.reg_data\t= ov5640_setting_QSXGA_2592_1944,\ndrivers/media/i2c/ov5640.c:1133:\t\t.reg_data_size\t= ARRAY_SIZE(ov5640_setting_QSXGA_2592_1944),\ndrivers/media/i2c/ov5640.c-1134-\t\t.max_fps\t= OV5640_15_FPS,\n--\ndrivers/media/i2c/ov5640.c-1138-\ndrivers/media/i2c/ov5640.c:1139:static const struct ov5640_timings *\ndrivers/media/i2c/ov5640.c:1140:ov5640_timings(const struct ov5640_dev *sensor,\ndrivers/media/i2c/ov5640.c:1141:\t const struct ov5640_mode_info *mode)\ndrivers/media/i2c/ov5640.c-1142-{\ndrivers/media/i2c/ov5640.c:1143:\tif (ov5640_is_csi2(sensor))\ndrivers/media/i2c/ov5640.c-1144-\t\treturn \u0026mode-\u003ecsi2_timings;\n--\ndrivers/media/i2c/ov5640.c-1148-\ndrivers/media/i2c/ov5640.c:1149:static int ov5640_init_slave_id(struct ov5640_dev *sensor)\ndrivers/media/i2c/ov5640.c-1150-{\n--\ndrivers/media/i2c/ov5640.c-1176-\ndrivers/media/i2c/ov5640.c:1177:static int ov5640_write_reg(struct ov5640_dev *sensor, u16 reg, u8 val)\ndrivers/media/i2c/ov5640.c-1178-{\n--\ndrivers/media/i2c/ov5640.c-1202-\ndrivers/media/i2c/ov5640.c:1203:static int ov5640_read_reg(struct ov5640_dev *sensor, u16 reg, u8 *val)\ndrivers/media/i2c/ov5640.c-1204-{\n--\ndrivers/media/i2c/ov5640.c-1233-\ndrivers/media/i2c/ov5640.c:1234:static int ov5640_read_reg16(struct ov5640_dev *sensor, u16 reg, u16 *val)\ndrivers/media/i2c/ov5640.c-1235-{\n--\ndrivers/media/i2c/ov5640.c-1238-\ndrivers/media/i2c/ov5640.c:1239:\tret = ov5640_read_reg(sensor, reg, \u0026hi);\ndrivers/media/i2c/ov5640.c-1240-\tif (ret)\ndrivers/media/i2c/ov5640.c-1241-\t\treturn ret;\ndrivers/media/i2c/ov5640.c:1242:\tret = ov5640_read_reg(sensor, reg + 1, \u0026lo);\ndrivers/media/i2c/ov5640.c-1243-\tif (ret)\n--\ndrivers/media/i2c/ov5640.c-1249-\ndrivers/media/i2c/ov5640.c:1250:static int ov5640_write_reg16(struct ov5640_dev *sensor, u16 reg, u16 val)\ndrivers/media/i2c/ov5640.c-1251-{\n--\ndrivers/media/i2c/ov5640.c-1253-\ndrivers/media/i2c/ov5640.c:1254:\tret = ov5640_write_reg(sensor, reg, val \u003e\u003e 8);\ndrivers/media/i2c/ov5640.c-1255-\tif (ret)\n--\ndrivers/media/i2c/ov5640.c-1257-\ndrivers/media/i2c/ov5640.c:1258:\treturn ov5640_write_reg(sensor, reg + 1, val \u0026 0xff);\ndrivers/media/i2c/ov5640.c-1259-}\ndrivers/media/i2c/ov5640.c-1260-\ndrivers/media/i2c/ov5640.c:1261:static int ov5640_mod_reg(struct ov5640_dev *sensor, u16 reg,\ndrivers/media/i2c/ov5640.c-1262-\t\t\t u8 mask, u8 val)\n--\ndrivers/media/i2c/ov5640.c-1266-\ndrivers/media/i2c/ov5640.c:1267:\tret = ov5640_read_reg(sensor, reg, \u0026readval);\ndrivers/media/i2c/ov5640.c-1268-\tif (ret)\n--\ndrivers/media/i2c/ov5640.c-1274-\ndrivers/media/i2c/ov5640.c:1275:\treturn ov5640_write_reg(sensor, reg, val);\ndrivers/media/i2c/ov5640.c-1276-}\n--\ndrivers/media/i2c/ov5640.c-1374-\ndrivers/media/i2c/ov5640.c:1375:static unsigned long ov5640_compute_sys_clk(struct ov5640_dev *sensor,\ndrivers/media/i2c/ov5640.c-1376-\t\t\t\t\t u8 pll_prediv, u8 pll_mult,\n--\ndrivers/media/i2c/ov5640.c-1387-\ndrivers/media/i2c/ov5640.c:1388:static unsigned long ov5640_calc_sys_clk(struct ov5640_dev *sensor,\ndrivers/media/i2c/ov5640.c-1389-\t\t\t\t\t unsigned long rate,\n--\ndrivers/media/i2c/ov5640.c-1411-\ndrivers/media/i2c/ov5640.c:1412:\t\t\t_rate = ov5640_compute_sys_clk(sensor,\ndrivers/media/i2c/ov5640.c-1413-\t\t\t\t\t\t OV5640_PLL_PREDIV,\n--\ndrivers/media/i2c/ov5640.c-1449-/*\ndrivers/media/i2c/ov5640.c:1450: * ov5640_set_mipi_pclk() - Calculate the clock tree configuration values\ndrivers/media/i2c/ov5640.c-1451- *\t\t\t for the MIPI CSI-2 output.\ndrivers/media/i2c/ov5640.c-1452- */\ndrivers/media/i2c/ov5640.c:1453:static int ov5640_set_mipi_pclk(struct ov5640_dev *sensor)\ndrivers/media/i2c/ov5640.c-1454-{\n--\ndrivers/media/i2c/ov5640.c-1463-\ndrivers/media/i2c/ov5640.c:1464:\t/* Use the link freq computed at ov5640_update_pixel_rate() time. */\ndrivers/media/i2c/ov5640.c-1465-\tlink_freq = sensor-\u003ecurrent_link_freq;\n--\ndrivers/media/i2c/ov5640.c-1478-\tsysclk = link_freq * mipi_div;\ndrivers/media/i2c/ov5640.c:1479:\tov5640_calc_sys_clk(sensor, sysclk, \u0026prediv, \u0026mult, \u0026sysdiv);\ndrivers/media/i2c/ov5640.c-1480-\n--\ndrivers/media/i2c/ov5640.c-1522-\t/* Program the clock tree registers. */\ndrivers/media/i2c/ov5640.c:1523:\tret = ov5640_mod_reg(sensor, OV5640_REG_SC_PLL_CTRL0, 0x0f, bit_div);\ndrivers/media/i2c/ov5640.c-1524-\tif (ret)\n--\ndrivers/media/i2c/ov5640.c-1526-\ndrivers/media/i2c/ov5640.c:1527:\tret = ov5640_mod_reg(sensor, OV5640_REG_SC_PLL_CTRL1, 0xff,\ndrivers/media/i2c/ov5640.c-1528-\t\t\t (sysdiv \u003c\u003c 4) | mipi_div);\n--\ndrivers/media/i2c/ov5640.c-1531-\ndrivers/media/i2c/ov5640.c:1532:\tret = ov5640_mod_reg(sensor, OV5640_REG_SC_PLL_CTRL2, 0xff, mult);\ndrivers/media/i2c/ov5640.c-1533-\tif (ret)\n--\ndrivers/media/i2c/ov5640.c-1535-\ndrivers/media/i2c/ov5640.c:1536:\tret = ov5640_mod_reg(sensor, OV5640_REG_SC_PLL_CTRL3, 0x1f,\ndrivers/media/i2c/ov5640.c-1537-\t\t\t root_div | prediv);\n--\ndrivers/media/i2c/ov5640.c-1540-\ndrivers/media/i2c/ov5640.c:1541:\tret = ov5640_mod_reg(sensor, OV5640_REG_SYS_ROOT_DIVIDER, 0x3f,\ndrivers/media/i2c/ov5640.c-1542-\t\t\t (pclk_div \u003c\u003c 4) | (sclk2x_div \u003c\u003c 2) | sclk_div);\n--\ndrivers/media/i2c/ov5640.c-1545-\ndrivers/media/i2c/ov5640.c:1546:\treturn ov5640_write_reg(sensor, OV5640_REG_PCLK_PERIOD, pclk_period);\ndrivers/media/i2c/ov5640.c-1547-}\ndrivers/media/i2c/ov5640.c-1548-\ndrivers/media/i2c/ov5640.c:1549:static u32 ov5640_calc_pixel_rate(struct ov5640_dev *sensor)\ndrivers/media/i2c/ov5640.c-1550-{\ndrivers/media/i2c/ov5640.c:1551:\tconst struct ov5640_mode_info *mode = sensor-\u003ecurrent_mode;\ndrivers/media/i2c/ov5640.c:1552:\tconst struct ov5640_timings *timings = \u0026mode-\u003edvp_timings;\ndrivers/media/i2c/ov5640.c-1553-\tu32 rate;\n--\ndrivers/media/i2c/ov5640.c-1555-\trate = timings-\u003ehtot * (timings-\u003ecrop.height + timings-\u003evblank_def);\ndrivers/media/i2c/ov5640.c:1556:\trate *= ov5640_framerates[sensor-\u003ecurrent_fr];\ndrivers/media/i2c/ov5640.c-1557-\n--\ndrivers/media/i2c/ov5640.c-1560-\ndrivers/media/i2c/ov5640.c:1561:static unsigned long ov5640_calc_pclk(struct ov5640_dev *sensor,\ndrivers/media/i2c/ov5640.c-1562-\t\t\t\t unsigned long rate,\n--\ndrivers/media/i2c/ov5640.c-1568-\ndrivers/media/i2c/ov5640.c:1569:\t_rate = ov5640_calc_sys_clk(sensor, _rate, pll_prediv, pll_mult,\ndrivers/media/i2c/ov5640.c-1570-\t\t\t\t sysdiv);\n--\ndrivers/media/i2c/ov5640.c-1577-\ndrivers/media/i2c/ov5640.c:1578:static int ov5640_set_dvp_pclk(struct ov5640_dev *sensor)\ndrivers/media/i2c/ov5640.c-1579-{\n--\ndrivers/media/i2c/ov5640.c-1583-\ndrivers/media/i2c/ov5640.c:1584:\trate = ov5640_calc_pixel_rate(sensor);\ndrivers/media/i2c/ov5640.c:1585:\trate *= ov5640_code_to_bpp(sensor, sensor-\u003efmt.code);\ndrivers/media/i2c/ov5640.c-1586-\trate /= sensor-\u003eep.bus.parallel.bus_width;\ndrivers/media/i2c/ov5640.c-1587-\ndrivers/media/i2c/ov5640.c:1588:\tov5640_calc_pclk(sensor, rate, \u0026prediv, \u0026mult, \u0026sysdiv, \u0026pll_rdiv,\ndrivers/media/i2c/ov5640.c-1589-\t\t\t \u0026bit_div, \u0026pclk_div);\n--\ndrivers/media/i2c/ov5640.c-1593-\ndrivers/media/i2c/ov5640.c:1594:\tret = ov5640_mod_reg(sensor, OV5640_REG_SC_PLL_CTRL0,\ndrivers/media/i2c/ov5640.c-1595-\t\t\t 0x0f, bit_div);\n--\ndrivers/media/i2c/ov5640.c-1602-\t */\ndrivers/media/i2c/ov5640.c:1603:\tret = ov5640_mod_reg(sensor, OV5640_REG_SC_PLL_CTRL1,\ndrivers/media/i2c/ov5640.c-1604-\t\t\t 0xff, sysdiv \u003c\u003c 4);\n--\ndrivers/media/i2c/ov5640.c-1607-\ndrivers/media/i2c/ov5640.c:1608:\tret = ov5640_mod_reg(sensor, OV5640_REG_SC_PLL_CTRL2,\ndrivers/media/i2c/ov5640.c-1609-\t\t\t 0xff, mult);\n--\ndrivers/media/i2c/ov5640.c-1612-\ndrivers/media/i2c/ov5640.c:1613:\tret = ov5640_mod_reg(sensor, OV5640_REG_SC_PLL_CTRL3,\ndrivers/media/i2c/ov5640.c-1614-\t\t\t 0x1f, prediv | ((pll_rdiv - 1) \u003c\u003c 4));\n--\ndrivers/media/i2c/ov5640.c-1617-\ndrivers/media/i2c/ov5640.c:1618:\treturn ov5640_mod_reg(sensor, OV5640_REG_SYS_ROOT_DIVIDER, 0x30,\ndrivers/media/i2c/ov5640.c-1619-\t\t\t (ilog2(pclk_div) \u003c\u003c 4));\n--\ndrivers/media/i2c/ov5640.c-1622-/* set JPEG framing sizes */\ndrivers/media/i2c/ov5640.c:1623:static int ov5640_set_jpeg_timings(struct ov5640_dev *sensor,\ndrivers/media/i2c/ov5640.c:1624:\t\t\t\t const struct ov5640_mode_info *mode)\ndrivers/media/i2c/ov5640.c-1625-{\n--\ndrivers/media/i2c/ov5640.c-1634-\t */\ndrivers/media/i2c/ov5640.c:1635:\tret = ov5640_mod_reg(sensor, OV5640_REG_JPG_MODE_SELECT, 0x7, 0x3);\ndrivers/media/i2c/ov5640.c-1636-\tif (ret \u003c 0)\n--\ndrivers/media/i2c/ov5640.c-1638-\ndrivers/media/i2c/ov5640.c:1639:\tret = ov5640_write_reg16(sensor, OV5640_REG_VFIFO_HSIZE, mode-\u003ewidth);\ndrivers/media/i2c/ov5640.c-1640-\tif (ret \u003c 0)\n--\ndrivers/media/i2c/ov5640.c-1642-\ndrivers/media/i2c/ov5640.c:1643:\treturn ov5640_write_reg16(sensor, OV5640_REG_VFIFO_VSIZE, mode-\u003eheight);\ndrivers/media/i2c/ov5640.c-1644-}\n--\ndrivers/media/i2c/ov5640.c-1646-/* download ov5640 settings to sensor through i2c */\ndrivers/media/i2c/ov5640.c:1647:static int ov5640_set_timings(struct ov5640_dev *sensor,\ndrivers/media/i2c/ov5640.c:1648:\t\t\t const struct ov5640_mode_info *mode)\ndrivers/media/i2c/ov5640.c-1649-{\ndrivers/media/i2c/ov5640.c:1650:\tconst struct ov5640_timings *timings;\ndrivers/media/i2c/ov5640.c-1651-\tconst struct v4l2_rect *analog_crop;\n--\ndrivers/media/i2c/ov5640.c-1655-\tif (sensor-\u003efmt.code == MEDIA_BUS_FMT_JPEG_1X8) {\ndrivers/media/i2c/ov5640.c:1656:\t\tret = ov5640_set_jpeg_timings(sensor, mode);\ndrivers/media/i2c/ov5640.c-1657-\t\tif (ret \u003c 0)\n--\ndrivers/media/i2c/ov5640.c-1660-\ndrivers/media/i2c/ov5640.c:1661:\ttimings = ov5640_timings(sensor, mode);\ndrivers/media/i2c/ov5640.c-1662-\tanalog_crop = \u0026timings-\u003eanalog_crop;\n--\ndrivers/media/i2c/ov5640.c-1664-\ndrivers/media/i2c/ov5640.c:1665:\tret = ov5640_write_reg16(sensor, OV5640_REG_TIMING_HS,\ndrivers/media/i2c/ov5640.c-1666-\t\t\t\t analog_crop-\u003eleft);\n--\ndrivers/media/i2c/ov5640.c-1669-\ndrivers/media/i2c/ov5640.c:1670:\tret = ov5640_write_reg16(sensor, OV5640_REG_TIMING_VS,\ndrivers/media/i2c/ov5640.c-1671-\t\t\t\t analog_crop-\u003etop);\n--\ndrivers/media/i2c/ov5640.c-1674-\ndrivers/media/i2c/ov5640.c:1675:\tret = ov5640_write_reg16(sensor, OV5640_REG_TIMING_HW,\ndrivers/media/i2c/ov5640.c-1676-\t\t\t\t analog_crop-\u003eleft + analog_crop-\u003ewidth - 1);\n--\ndrivers/media/i2c/ov5640.c-1679-\ndrivers/media/i2c/ov5640.c:1680:\tret = ov5640_write_reg16(sensor, OV5640_REG_TIMING_VH,\ndrivers/media/i2c/ov5640.c-1681-\t\t\t\t analog_crop-\u003etop + analog_crop-\u003eheight - 1);\n--\ndrivers/media/i2c/ov5640.c-1684-\ndrivers/media/i2c/ov5640.c:1685:\tret = ov5640_write_reg16(sensor, OV5640_REG_TIMING_HOFFS, crop-\u003eleft);\ndrivers/media/i2c/ov5640.c-1686-\tif (ret \u003c 0)\n--\ndrivers/media/i2c/ov5640.c-1688-\ndrivers/media/i2c/ov5640.c:1689:\tret = ov5640_write_reg16(sensor, OV5640_REG_TIMING_VOFFS, crop-\u003etop);\ndrivers/media/i2c/ov5640.c-1690-\tif (ret \u003c 0)\n--\ndrivers/media/i2c/ov5640.c-1692-\ndrivers/media/i2c/ov5640.c:1693:\tret = ov5640_write_reg16(sensor, OV5640_REG_TIMING_DVPHO, mode-\u003ewidth);\ndrivers/media/i2c/ov5640.c-1694-\tif (ret \u003c 0)\n--\ndrivers/media/i2c/ov5640.c-1696-\ndrivers/media/i2c/ov5640.c:1697:\tret = ov5640_write_reg16(sensor, OV5640_REG_TIMING_DVPVO, mode-\u003eheight);\ndrivers/media/i2c/ov5640.c-1698-\tif (ret \u003c 0)\n--\ndrivers/media/i2c/ov5640.c-1700-\ndrivers/media/i2c/ov5640.c:1701:\tret = ov5640_write_reg16(sensor, OV5640_REG_TIMING_HTS, timings-\u003ehtot);\ndrivers/media/i2c/ov5640.c-1702-\tif (ret \u003c 0)\n--\ndrivers/media/i2c/ov5640.c-1704-\ndrivers/media/i2c/ov5640.c:1705:\tret = ov5640_write_reg16(sensor, OV5640_REG_TIMING_VTS,\ndrivers/media/i2c/ov5640.c-1706-\t\t\t\t mode-\u003eheight + timings-\u003evblank_def);\n--\ndrivers/media/i2c/ov5640.c-1712-\ndrivers/media/i2c/ov5640.c:1713:static void ov5640_load_regs(struct ov5640_dev *sensor,\ndrivers/media/i2c/ov5640.c-1714-\t\t\t const struct reg_value *regs, unsigned int regnum)\n--\ndrivers/media/i2c/ov5640.c-1730-\t\t val == OV5640_REG_SYS_CTRL0_SW_PWUP \u0026\u0026\ndrivers/media/i2c/ov5640.c:1731:\t\t !ov5640_is_csi2(sensor))\ndrivers/media/i2c/ov5640.c-1732-\t\t\tcontinue;\n--\ndrivers/media/i2c/ov5640.c-1734-\t\tif (mask)\ndrivers/media/i2c/ov5640.c:1735:\t\t\tret = ov5640_mod_reg(sensor, reg_addr, mask, val);\ndrivers/media/i2c/ov5640.c-1736-\t\telse\ndrivers/media/i2c/ov5640.c:1737:\t\t\tret = ov5640_write_reg(sensor, reg_addr, val);\ndrivers/media/i2c/ov5640.c-1738-\t\tif (ret)\n--\ndrivers/media/i2c/ov5640.c-1745-\ndrivers/media/i2c/ov5640.c:1746:static int ov5640_set_autoexposure(struct ov5640_dev *sensor, bool on)\ndrivers/media/i2c/ov5640.c-1747-{\ndrivers/media/i2c/ov5640.c:1748:\treturn ov5640_mod_reg(sensor, OV5640_REG_AEC_PK_MANUAL,\ndrivers/media/i2c/ov5640.c-1749-\t\t\t BIT(0), on ? 0 : BIT(0));\n--\ndrivers/media/i2c/ov5640.c-1752-/* read exposure, in number of line periods */\ndrivers/media/i2c/ov5640.c:1753:static int ov5640_get_exposure(struct ov5640_dev *sensor)\ndrivers/media/i2c/ov5640.c-1754-{\n--\ndrivers/media/i2c/ov5640.c-1757-\ndrivers/media/i2c/ov5640.c:1758:\tret = ov5640_read_reg(sensor, OV5640_REG_AEC_PK_EXPOSURE_HI, \u0026temp);\ndrivers/media/i2c/ov5640.c-1759-\tif (ret)\n--\ndrivers/media/i2c/ov5640.c-1761-\texp = ((int)temp \u0026 0x0f) \u003c\u003c 16;\ndrivers/media/i2c/ov5640.c:1762:\tret = ov5640_read_reg(sensor, OV5640_REG_AEC_PK_EXPOSURE_MED, \u0026temp);\ndrivers/media/i2c/ov5640.c-1763-\tif (ret)\n--\ndrivers/media/i2c/ov5640.c-1765-\texp |= ((int)temp \u003c\u003c 8);\ndrivers/media/i2c/ov5640.c:1766:\tret = ov5640_read_reg(sensor, OV5640_REG_AEC_PK_EXPOSURE_LO, \u0026temp);\ndrivers/media/i2c/ov5640.c-1767-\tif (ret)\n--\ndrivers/media/i2c/ov5640.c-1774-/* write exposure, given number of line periods */\ndrivers/media/i2c/ov5640.c:1775:static int ov5640_set_exposure(struct ov5640_dev *sensor, u32 exposure)\ndrivers/media/i2c/ov5640.c-1776-{\n--\ndrivers/media/i2c/ov5640.c-1780-\ndrivers/media/i2c/ov5640.c:1781:\tret = ov5640_write_reg(sensor,\ndrivers/media/i2c/ov5640.c-1782-\t\t\t OV5640_REG_AEC_PK_EXPOSURE_LO,\n--\ndrivers/media/i2c/ov5640.c-1785-\t\treturn ret;\ndrivers/media/i2c/ov5640.c:1786:\tret = ov5640_write_reg(sensor,\ndrivers/media/i2c/ov5640.c-1787-\t\t\t OV5640_REG_AEC_PK_EXPOSURE_MED,\n--\ndrivers/media/i2c/ov5640.c-1790-\t\treturn ret;\ndrivers/media/i2c/ov5640.c:1791:\treturn ov5640_write_reg(sensor,\ndrivers/media/i2c/ov5640.c-1792-\t\t\t\tOV5640_REG_AEC_PK_EXPOSURE_HI,\n--\ndrivers/media/i2c/ov5640.c-1795-\ndrivers/media/i2c/ov5640.c:1796:static int ov5640_get_gain(struct ov5640_dev *sensor)\ndrivers/media/i2c/ov5640.c-1797-{\n--\ndrivers/media/i2c/ov5640.c-1800-\ndrivers/media/i2c/ov5640.c:1801:\tret = ov5640_read_reg16(sensor, OV5640_REG_AEC_PK_REAL_GAIN, \u0026gain);\ndrivers/media/i2c/ov5640.c-1802-\tif (ret)\n--\ndrivers/media/i2c/ov5640.c-1807-\ndrivers/media/i2c/ov5640.c:1808:static int ov5640_set_gain(struct ov5640_dev *sensor, int gain)\ndrivers/media/i2c/ov5640.c-1809-{\n\n"
} |
| 9/2 | 2026/09/16 07:40 | llm | patch-evaluator |
0mModel:gemini-3.8-flash Args: null Results: null Tokens: input: 19352 output: 44 thoughts: 32 Thoughts: Okay, let's dive into this. Here's how I'd approach that: **Tracing the OV5640 Driver Registration** Right, so I need to figure out how this `ov5640.c` driver is actually hooked into the I2C subsystem. I know it's a standard practice for I2C drivers to register themselves with the relevant framework, usually through something like `module_i2c_driver`. I need to confirm this. To do this I will go straight to the bottom of the file; it is the most likely spot for this vital registration information, which will be our entry point. I'll scan for the registration macro, or whatever equivalent the kernel uses. Hopefully, it's named something intuitive! I can't imagine this driver being structured in an unusual fashion. |
| 10/2 | 2026/09/16 07:40 | tool | read-file |
0mArgs:{
"File": "drivers/media/i2c/ov5640.c",
"FirstLine": 3990,
"LineCount": 40
}Results: {
"Contents": "3990:\t\tv4l2_async_unregister_subdev(\u0026sensor-\u003esd);\n3991:\t\tmedia_entity_cleanup(\u0026sensor-\u003esd.entity);\n3992:\t\tv4l2_ctrl_handler_free(\u0026sensor-\u003ectrls.handler);\n3993:\t\tmutex_destroy(\u0026sensor-\u003elock);\n3994:\t}\n3995:\t\n3996:\tstatic const struct dev_pm_ops ov5640_pm_ops = {\n3997:\t\tSET_RUNTIME_PM_OPS(ov5640_sensor_suspend, ov5640_sensor_resume, NULL)\n3998:\t};\n3999:\t\n4000:\tstatic const struct i2c_device_id ov5640_id[] = {\n4001:\t\t{ .name = \"ov5640\" },\n4002:\t\t{ }\n4003:\t};\n4004:\tMODULE_DEVICE_TABLE(i2c, ov5640_id);\n4005:\t\n4006:\tstatic const struct of_device_id ov5640_dt_ids[] = {\n4007:\t\t{ .compatible = \"ovti,ov5640\" },\n4008:\t\t{ /* sentinel */ }\n4009:\t};\n4010:\tMODULE_DEVICE_TABLE(of, ov5640_dt_ids);\n4011:\t\n4012:\tstatic struct i2c_driver ov5640_i2c_driver = {\n4013:\t\t.driver = {\n4014:\t\t\t.name = \"ov5640\",\n4015:\t\t\t.of_match_table\t= ov5640_dt_ids,\n4016:\t\t\t.pm = \u0026ov5640_pm_ops,\n4017:\t\t},\n4018:\t\t.id_table = ov5640_id,\n4019:\t\t.probe = ov5640_probe,\n4020:\t\t.remove = ov5640_remove,\n4021:\t};\n4022:\t\n4023:\tmodule_i2c_driver(ov5640_i2c_driver);\n4024:\t\n4025:\tMODULE_DESCRIPTION(\"OV5640 MIPI Camera Subdev Driver\");\n4026:\tMODULE_LICENSE(\"GPL\");\n"
} |
| 11/2 | 2026/09/16 07:40 | llm | patch-evaluator |
0mModel:gemini-3.8-flash Args: null Results: null Tokens: input: 20242 output: 44 thoughts: 204 Thoughts: **My Initial Assessment of the `ov5640_probe` Driver Function** Okay, so I'm looking at `ov5640_probe` – that's the probe function for the `ov5640` I2C camera sensor driver. My immediate concern is how this interacts with the tools I typically use: Syzkaller and QEMU. Can I actually instantiate and test I2C devices, like this `ov5640`, within those environments? My instinct is to check if I can use `/sys/bus/i2c/devices/i2c-*/new_device` from userspace, but I need to make sure Syzkaller even supports this method. Does it? I need to look into Syzkaller's i2c bus support, or if it has some kind of virtual i2c implementation. Does Syzkaller even bother instantiating i2c devices? Hang on, I'm pretty sure Syzkaller *doesn't* fuzz I2C devices directly through `new_device` unless there are dedicated descriptions for them. Does Syzkaller provide functionality for `new_device` or general i2c operations? Even if it *could* write to `new_device`, which is a big question mark, I need to know what `ov5640_probe` *actually* does. Time to dive into the code itself. I need to understand the control flow. |
| 12/2 | 2026/09/16 07:40 | tool | read-file |
0mArgs:{
"File": "drivers/media/i2c/ov5640.c",
"FirstLine": 3880,
"LineCount": 50
}Results: {
"Contents": "3880:\t\tfwnode_handle_put(endpoint);\n3881:\t\tif (ret) {\n3882:\t\t\tdev_err(dev, \"Could not parse endpoint\\n\");\n3883:\t\t\treturn ret;\n3884:\t\t}\n3885:\t\n3886:\t\tif (sensor-\u003eep.bus_type != V4L2_MBUS_PARALLEL \u0026\u0026\n3887:\t\t sensor-\u003eep.bus_type != V4L2_MBUS_CSI2_DPHY \u0026\u0026\n3888:\t\t sensor-\u003eep.bus_type != V4L2_MBUS_BT656) {\n3889:\t\t\tdev_err(dev, \"Unsupported bus type %d\\n\", sensor-\u003eep.bus_type);\n3890:\t\t\treturn -EINVAL;\n3891:\t\t}\n3892:\t\n3893:\t\tsensor-\u003efmt = ov5640_is_csi2(sensor) ? ov5640_csi2_default_fmt :\n3894:\t\t\t\t\t\t ov5640_dvp_default_fmt;\n3895:\t\n3896:\t\t/* get system clock (xclk) */\n3897:\t\tsensor-\u003exclk = devm_v4l2_sensor_clk_get(dev, \"xclk\");\n3898:\t\tif (IS_ERR(sensor-\u003exclk))\n3899:\t\t\treturn dev_err_probe(dev, PTR_ERR(sensor-\u003exclk),\n3900:\t\t\t\t\t \"failed to get xclk\\n\");\n3901:\t\n3902:\t\tsensor-\u003exclk_freq = clk_get_rate(sensor-\u003exclk);\n3903:\t\tif (sensor-\u003exclk_freq \u003c OV5640_XCLK_MIN ||\n3904:\t\t sensor-\u003exclk_freq \u003e OV5640_XCLK_MAX) {\n3905:\t\t\tdev_err(dev, \"xclk frequency out of range: %d Hz\\n\",\n3906:\t\t\t\tsensor-\u003exclk_freq);\n3907:\t\t\treturn -EINVAL;\n3908:\t\t}\n3909:\t\n3910:\t\t/* request optional power down pin */\n3911:\t\tsensor-\u003epwdn_gpio = devm_gpiod_get_optional(dev, \"powerdown\",\n3912:\t\t\t\t\t\t\t GPIOD_OUT_HIGH);\n3913:\t\tif (IS_ERR(sensor-\u003epwdn_gpio))\n3914:\t\t\treturn PTR_ERR(sensor-\u003epwdn_gpio);\n3915:\t\n3916:\t\t/* request optional reset pin */\n3917:\t\tsensor-\u003ereset_gpio = devm_gpiod_get_optional(dev, \"reset\",\n3918:\t\t\t\t\t\t\t GPIOD_OUT_HIGH);\n3919:\t\tif (IS_ERR(sensor-\u003ereset_gpio))\n3920:\t\t\treturn PTR_ERR(sensor-\u003ereset_gpio);\n3921:\t\n3922:\t\tv4l2_i2c_subdev_init(\u0026sensor-\u003esd, client, \u0026ov5640_subdev_ops);\n3923:\t\tsensor-\u003esd.internal_ops = \u0026ov5640_internal_ops;\n3924:\t\n3925:\t\tsensor-\u003esd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE |\n3926:\t\t\t\t V4L2_SUBDEV_FL_HAS_EVENTS;\n3927:\t\tsensor-\u003epad.flags = MEDIA_PAD_FL_SOURCE;\n3928:\t\tsensor-\u003esd.entity.function = MEDIA_ENT_F_CAM_SENSOR;\n3929:\t\tret = media_entity_pads_init(\u0026sensor-\u003esd.entity, 1, \u0026sensor-\u003epad);\n"
} |
| 13/2 | 2026/09/16 07:40 | llm | patch-evaluator |
0mModel:gemini-3.8-flash Args: null Results: null Tokens: input: 21771 output: 44 thoughts: 14 Thoughts: Okay, here's my summary, taking on the persona you requested: **Initial Assessment of the ov5640_probe Function** Right, let's dive in. I need to understand what this `ov5640_probe` function is all about. It's the starting point, the entry point for handling this specific sensor, the OV5640. So, I need to look at the beginning, at the very first lines of the function. What's the initial setup? What are the key checks? What's immediately apparent? What context does it expect? I'm anticipating some basic resource allocation, register access preparation – those are the usual suspects for a sensor driver. I want to see how the driver validates its initial conditions and the general outline it uses to get started. My experience tells me that initial probing is the most critical and the most vulnerable area for errors, so careful consideration here is paramount. |
| 14/2 | 2026/09/16 07:40 | tool | read-file |
0mArgs:{
"File": "drivers/media/i2c/ov5640.c",
"FirstLine": 3860,
"LineCount": 30
}Results: {
"Contents": "3860:\t\t */\n3861:\t\tsensor-\u003eframe_interval.numerator = 1;\n3862:\t\tsensor-\u003eframe_interval.denominator = ov5640_framerates[OV5640_30_FPS];\n3863:\t\tsensor-\u003ecurrent_fr = OV5640_30_FPS;\n3864:\t\tsensor-\u003ecurrent_mode =\n3865:\t\t\t\u0026ov5640_mode_data[OV5640_MODE_VGA_640_480];\n3866:\t\tsensor-\u003elast_mode = sensor-\u003ecurrent_mode;\n3867:\t\tsensor-\u003ecurrent_link_freq =\n3868:\t\t\tov5640_csi2_link_freqs[OV5640_DEFAULT_LINK_FREQ];\n3869:\t\n3870:\t\tsensor-\u003eae_target = 52;\n3871:\t\n3872:\t\tendpoint = fwnode_graph_get_next_endpoint(dev_fwnode(\u0026client-\u003edev),\n3873:\t\t\t\t\t\t\t NULL);\n3874:\t\tif (!endpoint) {\n3875:\t\t\tdev_err(dev, \"endpoint node not found\\n\");\n3876:\t\t\treturn -EINVAL;\n3877:\t\t}\n3878:\t\n3879:\t\tret = v4l2_fwnode_endpoint_parse(endpoint, \u0026sensor-\u003eep);\n3880:\t\tfwnode_handle_put(endpoint);\n3881:\t\tif (ret) {\n3882:\t\t\tdev_err(dev, \"Could not parse endpoint\\n\");\n3883:\t\t\treturn ret;\n3884:\t\t}\n3885:\t\n3886:\t\tif (sensor-\u003eep.bus_type != V4L2_MBUS_PARALLEL \u0026\u0026\n3887:\t\t sensor-\u003eep.bus_type != V4L2_MBUS_CSI2_DPHY \u0026\u0026\n3888:\t\t sensor-\u003eep.bus_type != V4L2_MBUS_BT656) {\n3889:\t\t\tdev_err(dev, \"Unsupported bus type %d\\n\", sensor-\u003eep.bus_type);\n"
} |
| 15/2 | 2026/09/16 07:40 | llm | patch-evaluator |
0mModel:gemini-3.8-flash Args: null Results: null Tokens: input: 22599 output: 34 thoughts: 1141 Thoughts: **Analysis of OV5640 Driver Reachability** Okay, let's break this down. My initial focus is on lines 3872-3877 of the driver, specifically the `fwnode_graph_get_next_endpoint` call. If that function returns NULL, it's an immediate `-EINVAL` and everything downstream is unreachable. This is a critical check. I then noted the subsequent lines involving `sensor->xclk` and the regulator setup, all of which are *after* that initial endpoint check. This raises a red flag: Could this driver code actually be *unreachable* under standard emulation? My immediate thoughts went to the fuzzing guidelines. Specifically, the sections on when to return `WorthFuzzing=false` and when to return `WorthFuzzing=true`. The key negative criterion is "structurally unreachable hardware." This is what seems likely. The OV5640 is an I2C camera sensor, specifically from OmniVision. It requires a physical sensor, an I2C bus, and a CSI-2 receiver. Does QEMU emulate this? No, it doesn't. My memory tells me QEMU doesn't have an OV5640 model. So, could it be instantiated dynamically? Even if someone tried to create an I2C device via `new_device`, the crucial endpoint graph check within `ov5640_probe` is still the problem. The device tree or ACPI endpoint graph is *not* populated when instantiating via `new_device`. Therefore, the `endpoint` pointer is always NULL! This means that `ov5640_probe` is *guaranteed* to return `-EINVAL` at the beginning. It's an unreachable execution path. Even if somehow the endpoint check was bypassed, it will still fail due to the xclk requirement. A clock named "xclk" on the device or device tree is checked, and in standard QEMU x86_64, there is no device tree, and ACPI doesn't define an OV5640 with endpoints and xclk! This is because the physical hardware is absent in the target. It's essentially structural, and therefore not reachable. So, my conclusion is that the driver, specifically the parts touched by this patch, is indeed structurally unreachable. I need to double-check the Kconfig, just to be sure, but my initial assessment is that this code falls squarely into the "structurally unreachable hardware" category and is not worth fuzzing. |
| 16/2 | 2026/09/16 07:41 | tool | grepper |
0mArgs:{
"Expression": "VIDEO_OV5640",
"PathPrefix": "drivers/media/i2c"
}Results: {
"Output": "drivers/media/i2c/Kconfig=550=config VIDEO_OV4689\n--\ndrivers/media/i2c/Kconfig-560-\ndrivers/media/i2c/Kconfig:561:config VIDEO_OV5640\ndrivers/media/i2c/Kconfig-562-\ttristate \"OmniVision OV5640 sensor support\"\n--\ndrivers/media/i2c/Makefile=105=obj-$(CONFIG_VIDEO_OV4689) += ov4689.o\ndrivers/media/i2c/Makefile:106:obj-$(CONFIG_VIDEO_OV5640) += ov5640.o\ndrivers/media/i2c/Makefile-107-obj-$(CONFIG_VIDEO_OV5645) += ov5645.o\n"
} |
| 17/2 | 2026/09/16 07:41 | llm | patch-evaluator |
0mModel:gemini-3.8-flash Args: null Results: null Tokens: input: 24537 output: 38 thoughts: 23 Thoughts: Here's my attempt at summarizing the thought process, tailored for an expert audience: **Diving into the I2C Media Driver Configuration** Okay, time to get my hands dirty. I'm focusing on `drivers/media/i2c/Kconfig`, specifically around line 560. I need to understand how a particular I2C-connected media driver is configured. I'm probably looking for dependencies, default settings, or maybe some conditional logic that affects whether a specific feature or device is enabled. I'm expecting to see a `config` statement, possibly nested within a `menuconfig` or `choice` block. I'll be keeping an eye out for any `depends on` clauses that link to other kernel features or hardware settings. Knowing the interdependencies is crucial for resolving any configuration conflicts or understanding why a certain device isn't showing up. This Kconfig file is where the rubber meets the road when it comes to customizing this aspect of the kernel. Hopefully the commenting is good. |
| 18/2 | 2026/09/16 07:41 | tool | read-file |
0mArgs:{
"File": "drivers/media/i2c/Kconfig",
"FirstLine": 560,
"LineCount": 20
}Results: {
"Contents": " 560:\t\n 561:\tconfig VIDEO_OV5640\n 562:\t\ttristate \"OmniVision OV5640 sensor support\"\n 563:\t\tdepends on OF\n 564:\t\tdepends on GPIOLIB\n 565:\t\thelp\n 566:\t\t This is a Video4Linux2 sensor driver for the Omnivision\n 567:\t\t OV5640 camera sensor with a MIPI CSI-2 interface.\n 568:\t\n 569:\tconfig VIDEO_OV5645\n 570:\t\ttristate \"OmniVision OV5645 sensor support\"\n 571:\t\tdepends on OF\n 572:\t\thelp\n 573:\t\t This is a Video4Linux2 sensor driver for the OmniVision\n 574:\t\t OV5645 camera.\n 575:\t\n 576:\t\t To compile this driver as a module, choose M here: the\n 577:\t\t module will be called ov5645.\n 578:\t\n 579:\tconfig VIDEO_OV5647\n"
} |
| 19/2 | 2026/09/16 07:41 | llm | patch-evaluator |
4mModel:gemini-3.8-flash Args: null Results: null Tokens: input: 25109 output: 21 thoughts: 237 Thoughts: **My Analysis of the ov5640 Driver's Applicability** Okay, first things first, a crucial observation: it *depends on* `CONFIG_OF`! Right, that's the starting point. Now, focusing on the amd64 architecture – my target, essentially – things start to become clear. Generally, for x86 PCs and servers, `CONFIG_OF` isn't enabled. Device trees aren't the norm. We're booting through ACPI/BIOS, not DT. Sure, it *could* be enabled, but it's not the usual configuration. And, even *if* `CONFIG_OF` were enabled, there are no device tree nodes for the ov5640 in standard QEMU amd64 VMs. That's a red flag. Diving deeper, the ov5640 is physical hardware – an OmniVision CMOS image sensor. We're talking embedded boards here: Raspberry Pi, i.MX6, these are ARM/ARM64 embedded devices. QEMU doesn't emulate it. We're not accessing this through virtual buses like USB gadget or virtio. Wait... a thought! Can USB camera drivers *use* the ov5640? Is there a possibility of an indirect path? I need to check. Let's see if any USB video bridge – something like uvcvideo or gspca – utilizes `drivers/media/i2c/ov5640.c`, or calls `ov5640_probe`. That would at least offer a potential glimmer of hope in this context. I'm going to have to investigate that. |
| 20/2 | 2026/09/16 07:46 | tool | grepper |
0mArgs:{
"Expression": "ov5640_probe"
}Results: {
"Output": "drivers/media/i2c/ov5640.c=3822=static int ov5640_check_chip_id(struct ov5640_dev *sensor)\n--\ndrivers/media/i2c/ov5640.c-3843-\ndrivers/media/i2c/ov5640.c:3844:static int ov5640_probe(struct i2c_client *client)\ndrivers/media/i2c/ov5640.c-3845-{\n--\ndrivers/media/i2c/ov5640.c=4012=static struct i2c_driver ov5640_i2c_driver = {\n--\ndrivers/media/i2c/ov5640.c-4018-\t.id_table = ov5640_id,\ndrivers/media/i2c/ov5640.c:4019:\t.probe = ov5640_probe,\ndrivers/media/i2c/ov5640.c-4020-\t.remove = ov5640_remove,\n"
} |
| 21/2 | 2026/09/16 07:46 | llm | patch-evaluator |
0mModel:gemini-3.8-flash Args: null Results: null Tokens: input: 26017 output: 24 thoughts: 25 Thoughts: Okay, here's my take on those thoughts, tailored for an expert audience: **Digging Deeper into the ov5640 Context** Alright, so we've got a specific issue or area of interest related to the `ov5640`, and I need to get a really comprehensive view of how it's used within the entire project. My immediate thought is, let's fire up a `grep` – the good old reliable workhorse. I want to search the entire codebase for *every single* instance of `ov5640`. That includes comments, configuration files, build scripts, everything. The goal isn't just to find direct code references, but also any contextual mentions. Perhaps there's an obsolete config file referencing it that shouldn't be there, or maybe there's documentation nearby that will jog the memory. I need to get an exhaustive list of all its appearances. This sweep should reveal all the touchpoints, dependencies, and perhaps even some forgotten legacy cruft that could be influencing the current behavior. This broad search is the best way to get a full picture of the `ov5640` landscape. |
| 22/2 | 2026/09/16 07:46 | tool | grepper |
0mArgs:{
"Expression": "\"ovti,ov5640\""
}Results: {
"Output": "Documentation/devicetree/bindings/media/i2c/ovti,ov5640.yaml=85=examples:\n--\nDocumentation/devicetree/bindings/media/i2c/ovti,ov5640.yaml-94- camera@3c {\nDocumentation/devicetree/bindings/media/i2c/ovti,ov5640.yaml:95: compatible = \"ovti,ov5640\";\nDocumentation/devicetree/bindings/media/i2c/ovti,ov5640.yaml-96- pinctrl-names = \"default\";\n--\nDocumentation/devicetree/bindings/media/i2c/ovti,ov5640.yaml-124- camera@3c {\nDocumentation/devicetree/bindings/media/i2c/ovti,ov5640.yaml:125: compatible = \"ovti,ov5640\";\nDocumentation/devicetree/bindings/media/i2c/ovti,ov5640.yaml-126- pinctrl-names = \"default\";\n--\nDocumentation/devicetree/bindings/media/ti,cal.yaml=123=examples:\n--\nDocumentation/devicetree/bindings/media/ti,cal.yaml-158- camera-sensor@3c {\nDocumentation/devicetree/bindings/media/ti,cal.yaml:159: compatible = \"ovti,ov5640\";\nDocumentation/devicetree/bindings/media/ti,cal.yaml-160- reg = \u003c0x3c\u003e;\n--\narch/arm/boot/dts/allwinner/sun8i-s3-pinecube.dts=99=\tov5640: camera@3c {\narch/arm/boot/dts/allwinner/sun8i-s3-pinecube.dts:100:\t\tcompatible = \"ovti,ov5640\";\narch/arm/boot/dts/allwinner/sun8i-s3-pinecube.dts-101-\t\treg = \u003c0x3c\u003e;\n--\narch/arm/boot/dts/nxp/imx/imx6-logicpd-baseboard.dtsi=261=\tov5640: camera@10 {\narch/arm/boot/dts/nxp/imx/imx6-logicpd-baseboard.dtsi:262:\t\tcompatible = \"ovti,ov5640\";\narch/arm/boot/dts/nxp/imx/imx6-logicpd-baseboard.dtsi-263-\t\tpinctrl-names = \"default\";\n--\narch/arm/boot/dts/nxp/imx/imx6qdl-apalis.dtsi=706=\tov5640_csi_cam: ov5640_mipi@3c {\narch/arm/boot/dts/nxp/imx/imx6qdl-apalis.dtsi:707:\t\tcompatible = \"ovti,ov5640\";\narch/arm/boot/dts/nxp/imx/imx6qdl-apalis.dtsi-708-\t\tAVDD-supply = \u003c\u0026reg_ov5640_2v8_a_vdd\u003e;\n--\narch/arm/boot/dts/nxp/imx/imx6qdl-icore.dtsi=199=\tov5640: camera@3c {\narch/arm/boot/dts/nxp/imx/imx6qdl-icore.dtsi:200:\t\tcompatible = \"ovti,ov5640\";\narch/arm/boot/dts/nxp/imx/imx6qdl-icore.dtsi-201-\t\tpinctrl-names = \"default\";\n--\narch/arm/boot/dts/nxp/imx/imx6qdl-sabrelite.dtsi=339=\tov5640: camera@40 {\narch/arm/boot/dts/nxp/imx/imx6qdl-sabrelite.dtsi:340:\t\tcompatible = \"ovti,ov5640\";\narch/arm/boot/dts/nxp/imx/imx6qdl-sabrelite.dtsi-341-\t\tpinctrl-names = \"default\";\n--\narch/arm/boot/dts/nxp/imx/imx6qdl-sabresd.dtsi=327=\tov5640: camera@3c {\narch/arm/boot/dts/nxp/imx/imx6qdl-sabresd.dtsi:328:\t\tcompatible = \"ovti,ov5640\";\narch/arm/boot/dts/nxp/imx/imx6qdl-sabresd.dtsi-329-\t\tpinctrl-names = \"default\";\n--\narch/arm/boot/dts/nxp/imx/imx6ul-14x14-evk.dtsi=204=\tcamera@3c {\narch/arm/boot/dts/nxp/imx/imx6ul-14x14-evk.dtsi:205:\t\tcompatible = \"ovti,ov5640\";\narch/arm/boot/dts/nxp/imx/imx6ul-14x14-evk.dtsi-206-\t\treg = \u003c0x3c\u003e;\n--\narch/arm/boot/dts/renesas/r8a7742-iwg21d-q7-dbcm-ov5640-single.dtsi=17=\tov5640@3c {\narch/arm/boot/dts/renesas/r8a7742-iwg21d-q7-dbcm-ov5640-single.dtsi:18:\t\tcompatible = \"ovti,ov5640\";\narch/arm/boot/dts/renesas/r8a7742-iwg21d-q7-dbcm-ov5640-single.dtsi-19-\t\treg = \u003c0x3c\u003e;\n--\narch/arm/boot/dts/st/stm32mp157c-ev1.dts=226=\tov5640: camera@3c {\narch/arm/boot/dts/st/stm32mp157c-ev1.dts:227:\t\tcompatible = \"ovti,ov5640\";\narch/arm/boot/dts/st/stm32mp157c-ev1.dts-228-\t\treg = \u003c0x3c\u003e;\n--\narch/arm/boot/dts/st/stm32mp15xx-avenger96-overlay-ov5640-x7.dtso=51=\tcamera@3c {\narch/arm/boot/dts/st/stm32mp15xx-avenger96-overlay-ov5640-x7.dtso:52:\t\tcompatible = \"ovti,ov5640\";\narch/arm/boot/dts/st/stm32mp15xx-avenger96-overlay-ov5640-x7.dtso-53-\t\treg = \u003c0x3c\u003e;\n--\narch/arm/boot/dts/ti/omap/dra72-evm-common.dtsi=280=\tov5640@3c {\narch/arm/boot/dts/ti/omap/dra72-evm-common.dtsi:281:\t\tcompatible = \"ovti,ov5640\";\narch/arm/boot/dts/ti/omap/dra72-evm-common.dtsi-282-\t\treg = \u003c0x3c\u003e;\n--\narch/arm64/boot/dts/allwinner/sun50i-a64-amarula-relic.dts=32=\t\tov5640: camera@3c {\narch/arm64/boot/dts/allwinner/sun50i-a64-amarula-relic.dts:33:\t\t\tcompatible = \"ovti,ov5640\";\narch/arm64/boot/dts/allwinner/sun50i-a64-amarula-relic.dts-34-\t\t\treg = \u003c0x3c\u003e;\n--\narch/arm64/boot/dts/allwinner/sun50i-a64-pinetab.dts=59=\t\tov5640: camera@3c {\narch/arm64/boot/dts/allwinner/sun50i-a64-pinetab.dts:60:\t\t\tcompatible = \"ovti,ov5640\";\narch/arm64/boot/dts/allwinner/sun50i-a64-pinetab.dts-61-\t\t\treg = \u003c0x3c\u003e;\n--\narch/arm64/boot/dts/freescale/imx8mm-beacon-baseboard.dtsi=193=\tcamera@10 {\narch/arm64/boot/dts/freescale/imx8mm-beacon-baseboard.dtsi:194:\t\tcompatible = \"ovti,ov5640\";\narch/arm64/boot/dts/freescale/imx8mm-beacon-baseboard.dtsi-195-\t\tpinctrl-names = \"default\";\n--\narch/arm64/boot/dts/freescale/imx8mm-evk.dtsi=456=\tcamera@3c {\narch/arm64/boot/dts/freescale/imx8mm-evk.dtsi:457:\t\tcompatible = \"ovti,ov5640\";\narch/arm64/boot/dts/freescale/imx8mm-evk.dtsi-458-\t\treg = \u003c0x3c\u003e;\n--\narch/arm64/boot/dts/freescale/imx8mn-beacon-baseboard.dtsi=164=\tcamera@10 {\narch/arm64/boot/dts/freescale/imx8mn-beacon-baseboard.dtsi:165:\t\tcompatible = \"ovti,ov5640\";\narch/arm64/boot/dts/freescale/imx8mn-beacon-baseboard.dtsi-166-\t\tpinctrl-names = \"default\";\n--\narch/arm64/boot/dts/freescale/imx8mn-evk.dtsi=301=\tcamera@3c {\narch/arm64/boot/dts/freescale/imx8mn-evk.dtsi:302:\t\tcompatible = \"ovti,ov5640\";\narch/arm64/boot/dts/freescale/imx8mn-evk.dtsi-303-\t\treg = \u003c0x3c\u003e;\n--\narch/arm64/boot/dts/freescale/imx8mp-dhcom-pdk3-overlay-nxp-spf-29853-c1-ov5640.dtsi=39=\tov5640: camera@3c {\narch/arm64/boot/dts/freescale/imx8mp-dhcom-pdk3-overlay-nxp-spf-29853-c1-ov5640.dtsi:40:\t\tcompatible = \"ovti,ov5640\";\narch/arm64/boot/dts/freescale/imx8mp-dhcom-pdk3-overlay-nxp-spf-29853-c1-ov5640.dtsi-41-\t\treg = \u003c0x3c\u003e;\n--\narch/arm64/boot/dts/freescale/imx8mp-evk.dts=599=\tcamera@3c {\narch/arm64/boot/dts/freescale/imx8mp-evk.dts:600:\t compatible = \"ovti,ov5640\";\narch/arm64/boot/dts/freescale/imx8mp-evk.dts-601-\t reg = \u003c0x3c\u003e;\n--\narch/arm64/boot/dts/freescale/imx8qm-mek-ov5640-csi0.dtso=20=\tov5640_mipi_0: camera@3c {\narch/arm64/boot/dts/freescale/imx8qm-mek-ov5640-csi0.dtso:21:\t\tcompatible = \"ovti,ov5640\";\narch/arm64/boot/dts/freescale/imx8qm-mek-ov5640-csi0.dtso-22-\t\treg = \u003c0x3c\u003e;\n--\narch/arm64/boot/dts/freescale/imx8qm-mek-ov5640-csi1.dtso=20=\tov5640_mipi_1: camera@3c {\narch/arm64/boot/dts/freescale/imx8qm-mek-ov5640-csi1.dtso:21:\t\tcompatible = \"ovti,ov5640\";\narch/arm64/boot/dts/freescale/imx8qm-mek-ov5640-csi1.dtso-22-\t\treg = \u003c0x3c\u003e;\n--\narch/arm64/boot/dts/freescale/imx8qxp-mek-ov5640-csi.dtso=19=\tov5640_mipi: camera@3c {\narch/arm64/boot/dts/freescale/imx8qxp-mek-ov5640-csi.dtso:20:\t\tcompatible = \"ovti,ov5640\";\narch/arm64/boot/dts/freescale/imx8qxp-mek-ov5640-csi.dtso-21-\t\treg = \u003c0x3c\u003e;\n--\narch/arm64/boot/dts/qcom/apq8016-sbc-d3-camera-mezzanine.dtso=64=\tcamera@3b {\narch/arm64/boot/dts/qcom/apq8016-sbc-d3-camera-mezzanine.dtso:65:\t\tcompatible = \"ovti,ov5640\";\narch/arm64/boot/dts/qcom/apq8016-sbc-d3-camera-mezzanine.dtso-66-\t\treg = \u003c0x3b\u003e;\n--\narch/arm64/boot/dts/ti/k3-am625-beagleplay-csi2-ov5640.dtso=62=\tov5640: camera@3c {\narch/arm64/boot/dts/ti/k3-am625-beagleplay-csi2-ov5640.dtso:63:\t\tcompatible = \"ovti,ov5640\";\narch/arm64/boot/dts/ti/k3-am625-beagleplay-csi2-ov5640.dtso-64-\t\treg = \u003c0x3c\u003e;\n--\narch/arm64/boot/dts/ti/k3-am625-beagleplay-csi2-tevi-ov5640.dtso=62=\tov5640: camera@3c {\narch/arm64/boot/dts/ti/k3-am625-beagleplay-csi2-tevi-ov5640.dtso:63:\t\tcompatible = \"ovti,ov5640\";\narch/arm64/boot/dts/ti/k3-am625-beagleplay-csi2-tevi-ov5640.dtso-64-\t\treg = \u003c0x3c\u003e;\n--\narch/arm64/boot/dts/ti/k3-am625-var-som-symphony.dts=270=\tov5640: camera@3c {\narch/arm64/boot/dts/ti/k3-am625-var-som-symphony.dts:271:\t\tcompatible = \"ovti,ov5640\";\narch/arm64/boot/dts/ti/k3-am625-var-som-symphony.dts-272-\t\treg = \u003c0x3c\u003e;\n--\narch/arm64/boot/dts/ti/k3-am625-verdin-ov5640.dtsi=45=\tcamera@3c {\narch/arm64/boot/dts/ti/k3-am625-verdin-ov5640.dtsi:46:\t\tcompatible = \"ovti,ov5640\";\narch/arm64/boot/dts/ti/k3-am625-verdin-ov5640.dtsi-47-\t\treg = \u003c0x3c\u003e;\n--\narch/arm64/boot/dts/ti/k3-am62p5-var-som-symphony.dts=233=\tov5640: camera@3c {\narch/arm64/boot/dts/ti/k3-am62p5-var-som-symphony.dts:234:\t\tcompatible = \"ovti,ov5640\";\narch/arm64/boot/dts/ti/k3-am62p5-var-som-symphony.dts-235-\t\treg = \u003c0x3c\u003e;\n--\narch/arm64/boot/dts/ti/k3-am62p5-verdin-ov5640.dtsi=46=\tcamera@3c {\narch/arm64/boot/dts/ti/k3-am62p5-verdin-ov5640.dtsi:47:\t\tcompatible = \"ovti,ov5640\";\narch/arm64/boot/dts/ti/k3-am62p5-verdin-ov5640.dtsi-48-\t\treg = \u003c0x3c\u003e;\n--\narch/arm64/boot/dts/ti/k3-am62x-sk-csi2-ov5640.dtso=64=\t\t\tov5640: camera@3c {\narch/arm64/boot/dts/ti/k3-am62x-sk-csi2-ov5640.dtso:65:\t\t\t\tcompatible = \"ovti,ov5640\";\narch/arm64/boot/dts/ti/k3-am62x-sk-csi2-ov5640.dtso-66-\t\t\t\treg = \u003c0x3c\u003e;\n--\narch/arm64/boot/dts/ti/k3-am62x-sk-csi2-tevi-ov5640.dtso=64=\t\t\tov5640: camera@3c {\narch/arm64/boot/dts/ti/k3-am62x-sk-csi2-tevi-ov5640.dtso:65:\t\t\t\tcompatible = \"ovti,ov5640\";\narch/arm64/boot/dts/ti/k3-am62x-sk-csi2-tevi-ov5640.dtso-66-\t\t\t\treg = \u003c0x3c\u003e;\n--\narch/arm64/boot/dts/ti/k3-am69-aquila-csi1-ov5640.dtsi=49=\tcamera@3c {\narch/arm64/boot/dts/ti/k3-am69-aquila-csi1-ov5640.dtsi:50:\t\tcompatible = \"ovti,ov5640\";\narch/arm64/boot/dts/ti/k3-am69-aquila-csi1-ov5640.dtsi-51-\t\treg = \u003c0x3c\u003e;\n--\narch/arm64/boot/dts/ti/k3-am69-aquila-csi2-ov5640.dtsi=49=\tcamera@3c {\narch/arm64/boot/dts/ti/k3-am69-aquila-csi2-ov5640.dtsi:50:\t\tcompatible = \"ovti,ov5640\";\narch/arm64/boot/dts/ti/k3-am69-aquila-csi2-ov5640.dtsi-51-\t\treg = \u003c0x3c\u003e;\n--\narch/arm64/boot/dts/ti/k3-j722s-evm-csi2-quad-tevi-ov5640.dtso=93=\t\tov5640_0: camera@3c {\narch/arm64/boot/dts/ti/k3-j722s-evm-csi2-quad-tevi-ov5640.dtso:94:\t\t\tcompatible = \"ovti,ov5640\";\narch/arm64/boot/dts/ti/k3-j722s-evm-csi2-quad-tevi-ov5640.dtso-95-\t\t\treg = \u003c0x3c\u003e;\n--\narch/arm64/boot/dts/ti/k3-j722s-evm-csi2-quad-tevi-ov5640.dtso=124=\t\tov5640_1: camera@3c {\narch/arm64/boot/dts/ti/k3-j722s-evm-csi2-quad-tevi-ov5640.dtso:125:\t\t\tcompatible = \"ovti,ov5640\";\narch/arm64/boot/dts/ti/k3-j722s-evm-csi2-quad-tevi-ov5640.dtso-126-\t\t\treg = \u003c0x3c\u003e;\n--\narch/arm64/boot/dts/ti/k3-j722s-evm-csi2-quad-tevi-ov5640.dtso=160=\t\tov5640_2: camera@3c {\narch/arm64/boot/dts/ti/k3-j722s-evm-csi2-quad-tevi-ov5640.dtso:161:\t\t\tcompatible = \"ovti,ov5640\";\narch/arm64/boot/dts/ti/k3-j722s-evm-csi2-quad-tevi-ov5640.dtso-162-\t\t\treg = \u003c0x3c\u003e;\n--\narch/arm64/boot/dts/ti/k3-j722s-evm-csi2-quad-tevi-ov5640.dtso=191=\t\tov5640_3: camera@3c {\narch/arm64/boot/dts/ti/k3-j722s-evm-csi2-quad-tevi-ov5640.dtso:192:\t\t\tcompatible = \"ovti,ov5640\";\narch/arm64/boot/dts/ti/k3-j722s-evm-csi2-quad-tevi-ov5640.dtso-193-\t\t\treg = \u003c0x3c\u003e;\n--\ndrivers/media/i2c/ov5640.c=4006=static const struct of_device_id ov5640_dt_ids[] = {\ndrivers/media/i2c/ov5640.c:4007:\t{ .compatible = \"ovti,ov5640\" },\ndrivers/media/i2c/ov5640.c-4008-\t{ /* sentinel */ }\n"
} |
| 23/2 | 2026/09/16 07:46 | llm | patch-evaluator |
0mModel:gemini-3.8-flash Args: null Results: null Tokens: input: 32355 output: 128 thoughts: 765 Thoughts: **Analysis of the OV5640 Driver Reachability on amd64** Okay, let's break this down. First, I see that the code modification is within `drivers/media/i2c/ov5640.c`, specifically in the `ov5640_probe` function. This driver is for the OmniVision OV5640, an I2C camera sensor. Right away, I'm thinking embedded systems. And the evidence confirms it: all the device tree references are in `arch/arm/boot/dts/` and `arch/arm64/boot/dts/`. Absolutely no mention of x86/amd64. The Kconfig also shows it *depends on* `OF` (Device Tree) and `GPIOLIB`. Now, in standard amd64 Linux kernels and syzkaller environments, Device Tree is either disabled, or there's no Device Tree defining any OV5640 hardware. And even if Device Tree *was* enabled, we're talking about physical embedded hardware: a physical ASIC/sensor. QEMU doesn't emulate that, not in a standard configuration. This is crucial. Let's check the negative criteria. The key point here is that this is structurally unreachable hardware. It's like vendor-specific PCIe switches, or some SmartNICs or GPUs, like the examples provided. The OV5640 driver requires specific hardware that isn't present in a typical virtualized environment. Even if the driver *were* compiled, any binding attempt without the appropriate Device Tree fwnodes would fail at `fwnode_graph_get_next_endpoint()`, way before reaching the actual modified code. So, let's confirm the unreachability, specifically checking if syzkaller can even trigger `ov5640_probe`. Device Tree is the deciding factor. It's not a standard boot or device discovery mechanism on amd64, and even if enabled, there's no virtual bus or QEMU emulation for this camera sensor. Let's double-check all aspects: The patch is indeed in `ov5640_probe` moving the mutex initialization. The target architecture is amd64. And reachability? We have structurally unreachable hardware: it needs I2C and a physical sensor, with specific Device Tree bindings, all of which are missing in standard amd64 VMs. Everything is very clear. It all aligns perfectly with the criteria for `WorthFuzzing=false`. The reasoning is straightforward: it is a device driver for the OmniVision OV5640 I2C camera sensor that is not emulated in standard QEMU / Virtual environments, on amd64, this makes it structurally unreachable. Therefore, it is *not* worth fuzzing. Now, let's move to set-results: * `WorthFuzzing`: false * `Reasoning`: Device driver for OmniVision OV5640 I2C camera sensor, requires specific Device Tree configuration and physical camera hardware not emulated in QEMU/virtual environments; on amd64 it is structurally unreachable. * `FocusSymbols`: \[ ] * `EnableConfigs`: \[ ] Time to call `set-results`. |
| 24/2 | 2026/09/16 07:46 | tool | set-results |
0mArgs:{
"EnableConfigs": [],
"FocusSymbols": [],
"Reasoning": "The patch modifies ov5640_probe in drivers/media/i2c/ov5640.c, which is a driver for the OmniVision OV5640 I2C camera sensor. This driver depends on Device Tree (CONFIG_OF) and physical camera hardware, neither of which is present or emulated in standard virtualized fuzzing environments (QEMU/GCE on amd64). The modified probe path is structurally unreachable.",
"WorthFuzzing": false
}Results: {
"EnableConfigs": null,
"FocusSymbols": [],
"Reasoning": "The patch modifies ov5640_probe in drivers/media/i2c/ov5640.c, which is a driver for the OmniVision OV5640 I2C camera sensor. This driver depends on Device Tree (CONFIG_OF) and physical camera hardware, neither of which is present or emulated in standard virtualized fuzzing environments (QEMU/GCE on amd64). The modified probe path is structurally unreachable.",
"WorthFuzzing": false
} |
| 25/1 | 2026/09/16 07:46 | action | If |
0mArgs:{
"WorthFuzzing": false
}Results: null |
| Total Calls | Total Tokens | Avg Tokens | Total Duration (Seconds) | Avg Duration (Seconds) |
|---|
| Total Calls | Total Duration (Seconds) | Avg Duration (Seconds) |
|---|