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

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

Patch Review

**Verdict: Acceptable with minor nits.**

The implementation is clean and does what the commit message describes. A few observations:

1. **Commit message typo**: "deecoding" should be "decoding":
   ```
   part of handling hardware recovery (HWR) events deecoding the message
   ```

2. **`get_reset_reason_desc` parameter type**: The function signature takes `enum rogue_context_reset_reason reason`, but the caller casts a `u32` to this enum:
   ```c
   get_reset_reason_desc((enum rogue_context_reset_reason)data->reset_reason)
   ```
   This is fine functionally and the `default` case handles unknown values, but since patch 2 explicitly moved away from using the enum type in structures (because "enum is not a fixed size"), it would be more consistent to have `get_reset_reason_desc` take a `u32` parameter instead. This is a style nit — the generated code will be the same.

3. **`get_dm_name` comment about TDM**: The comment and return value are slightly confusing:
   ```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_TDM` and `PVR_FWIF_DM_2D` are both defined as `(1)` in `pvr_rogue_fwif_common.h`, you can't have separate `case` labels. Returning `"2D or TDM"` is a reasonable compromise, but it could be improved by checking the device feature flag at runtime to return the correct name (since `pvr_dev` is available to the caller). This is optional — the current approach is acceptable for a diagnostic message.

4. **`pvr_dump_context_reset_notification` data parameter should be `const`**: The function only reads from `data`, so the signature should be:
   ```c
   void pvr_dump_context_reset_notification(struct pvr_device *pvr_dev,
       const struct rogue_fwif_fwccb_cmd_context_reset_data *data);
   ```
   (Both in the `.c` and `.h` files.)

5. **New file naming**: Creating `pvr_dump.c`/`.h` for a single function is fine if more dump/diagnostic functions are expected to be added later (which seems likely given the generic naming). If this will remain the only function, it could arguably live in `pvr_ccb.c` directly. Not a blocking issue.

6. **Alignment in `pvr_ccb.c`**: The indentation of the continuation line uses spaces that don't align perfectly with the opening parenthesis — minor formatting nit:
   ```c
   pvr_dump_context_reset_notification(pvr_dev,
                          &cmd->cmd_data.cmd_context_reset_notification);
   ```
   The `&cmd` should align under `pvr_dev`. This is cosmetic.

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Generated by Claude Code Patch Reviewer