[PATCH v4] drm: re-allow no-op changes on non-primary planes in async flips

[André Almeida]

Hi Xaver,

Thanks for the patch and sorry for the delay.

Em 08/08/2025 20:22, Xaver Hugl escreveu:
> Commit fd40a63c63a1 unintentionally disallowed no-op changes on non-primary
> planes that the driver doesn't allow async flips on. This broke async flips
> for compositors that disable the cursor plane in every async atomic commit.
> This changes drm_atomic_set_property to again only run atomic_async_check
> if the plane would actually be changed by the atomic commit.

Small nit: kernel commit messages goes in the imperative form:

"Change drm_atomic_set_property to again only run atomic_async_check..."

> 
> Fixes: fd40a63c63a1 ("drm/atomic: Let drivers decide which planes to async flip")
> Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/4263
> 
> Signed-off-by: Xaver Hugl <xaver.hugl at kde.org>
> ---

Reviewed-by: André Almeida <andrealmeid at igalia.com>