[PATCH] drm/atomic: allow no-op FB_ID updates for async flips

[André Almeida]

Hi Simon, thanks for the fix!

Em 29/06/2024 12:22, Simon Ser escreveu:
> User-space is allowed to submit any property in an async flip as
> long as the value doesn't change. However we missed one case:
> as things stand, the kernel rejects no-op FB_ID changes on
> non-primary planes. Fix this by changing the conditional and
> skipping drm_atomic_check_prop_changes() only for FB_ID on the
> primary plane (instead of skipping for FB_ID on any plane).
> 
> Fixes: 0e26cc72c71c ("drm: Refuse to async flip with atomic prop changes")
> Signed-off-by: Simon Ser <contact at emersion.fr>

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