Claude review: drm/imagination: Implement handling of context reset notification

[Claude Code Review Bot <claude-review@example.com>]

Patch Review

This is the main patch. It adds a new `pvr_dump.c` / `pvr_dump.h` and hooks the `ROGUE_FWIF_FWCCB_CMD_CONTEXT_RESET_NOTIFICATION` case into `process_fwccb_command()`.

**Issues and observations:**

1. **Typo in commit message:** "deecoding" should be "decoding":
   > `part of handling hardware recovery (HWR) events deecoding the message`

2. **Missing Co-authored-by tag format:** The `Co-authored-by:` tag is present but there is no `Signed-off-by` from Sarah Walker. Kernel convention typically expects a `Signed-off-by` from all co-authors to certify DCO compliance.

3. **`get_dm_name()` comment about PVR_FWIF_DM_TDM:** The code has:
   ```c
   /* PVR_FWIF_DM_TDM has the same index, but is discriminated by a device feature */
   case PVR_FWIF_DM_2D:
       return "2D or TDM";
   ```
   Since `PVR_FWIF_DM_2D` and `PVR_FWIF_DM_TDM` both equal 1 (confirmed in `pvr_rogue_fwif_common.h:26,31`), you can't have separate `case` labels. The "2D or TDM" string is a reasonable compromise, but it could be improved by checking the device features at runtime (via `pvr_dev`) to print the correct name. The `pvr_device` is already passed to the caller. This is a minor nit though — the current approach is functional.

4. **Cast from u32 to enum in `get_reset_reason_desc` call:**
   ```c
   get_reset_reason_desc((enum rogue_context_reset_reason)data->reset_reason)
   ```
   This is fine functionally, but the `default: return "Unknown"` case in `get_reset_reason_desc()` properly handles unexpected values, which is good. However, this cast slightly contradicts the spirit of patch 2 which changed the field to `u32` precisely because enum sizes aren't fixed. Consider accepting a `u32` parameter in `get_reset_reason_desc()` instead, which would be more consistent. This is a minor style point.

5. **`pvr_dump.c` / `pvr_dump.h` naming:** The file name `pvr_dump` is quite generic. Right now it only contains context reset notification handling. If more dump-type functionality is expected, the name is fine. If this is specifically about FW CCB notification handling, a more specific name might be clearer. This is subjective and not blocking.

6. **Alignment of function parameter continuation in pvr_ccb.c:**
   ```c
   pvr_dump_context_reset_notification(pvr_dev,
                          &cmd->cmd_data.cmd_context_reset_notification);
   ```
   The continuation line alignment looks slightly off (tabs vs spaces mix), but this matches the surrounding code style in the file, so it's acceptable.

7. **Log level consideration:** All notifications are printed via `drm_info()`. For high-frequency HWR events this could be noisy. A rate-limited variant (`drm_info_ratelimited()`) or using `drm_dbg()` for the detail lines might be worth considering, but this is a design choice the maintainers can weigh in on.

**Overall:** The series is straightforward and correct. The main actionable items are the commit message typo and the missing `Signed-off-by` from the co-author.

---
Generated by Claude Code Patch Reviewer