Claude review: drm/print: describe 6th & 9th bit of drm.debug

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

Patch Review

This patch adds the missing `Bit 6 (STATE)` and `Bit 9 (DRMRES)` entries to the `MODULE_PARM_DESC` string, and fixes the "enable all" comment from `0x1ff` to `0x3ff`.

**Correctness:** I verified against the enum `drm_debug_category` in `include/drm/drm_print.h:98-142` and the `DECLARE_DYNDBG_CLASSMAP` in `drivers/gpu/drm/drm_print.c:60-70`. There are 10 categories (bits 0–9):

| Bit | Enum | Present in MODULE_PARM_DESC? |
|-----|------|-----|
| 0–5 | CORE through VBL | Yes (already) |
| 6 | DRM_UT_STATE | **Missing → added by patch** |
| 7 | DRM_UT_LEASE | Yes (already) |
| 8 | DRM_UT_DP | Yes (already) |
| 9 | DRM_UT_DRMRES | **Missing → added by patch** |

The descriptions match the enum comments:
- `DRM_UT_STATE` → "Used for verbose atomic state debugging" → patch uses "STATE messages (atomic state code)" — consistent with the existing style.
- `DRM_UT_DRMRES` → "Used in the drm managed resources code" → patch uses "DRMRES messages (managed resources code)" — correct.

The bitmask fix from `0x1ff` (bits 0–8) to `0x3ff` (bits 0–9) is also correct, since 10 categories need 10 bits.

**Minor nit (non-blocking):** The subject says "6th & 9th bit" but the code adds "Bit 6" and "Bit 9" (0-indexed). "6th bit" in natural language would traditionally be bit 5. Consider "bit 6 & bit 9" in the subject for precision, though this is entirely cosmetic.

**Reviewed-by worthy:** Yes.

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Generated by Claude Code Patch Reviewer