Claude review: drm/meson: clean up KMS polling on register failure

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Overall Series Review

Subject: drm/meson: clean up KMS polling on register failure
Author: Myeonghun Pak <mhun512@gmail.com>
Patches: 1
Reviewed: 2026-05-25T17:01:26.997575

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This is a single-patch series that fixes a missing cleanup of the KMS polling helper in the error path of `meson_drv_bind_master()`. The fix is correct, minimal, and follows kernel conventions. The bug is real: `drm_kms_helper_poll_init()` is called at line 349, and if `drm_dev_register()` at line 353 subsequently fails, the original code jumped to `uninstall_irq` — skipping the necessary `drm_kms_helper_poll_fini()` call. This would leave a polling work item active against a device that is being torn down, which could lead to use-after-free or other memory corruption.

The fix adds an `uninstall_poll` label that calls `drm_kms_helper_poll_fini(drm)` before falling through to `uninstall_irq`. The unwinding order mirrors the initialization order (poll init → register, so unwind is: unregister-fail → poll fini → free irq), which is the standard kernel pattern.

**Verdict: Good patch, recommend accept.**

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