drm/simpledrm: Preallocate format-conversion buffer in atomic_check

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Preallocate the format-conversion state's storage in the plane's
atomic_check function if a format conversion is necessary. Allows
the update to fail if no memory is available. Avoids the same
allocation within atomic_update, which may not fail.

Also inline drm_plane_helper_atomic_check() into the driver and thus
return early for invisible planes. Avoids memory allocation entirely
in this case.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231009141018.11291-6-tzimmermann@suse.de

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This commit is contained in:

Thomas Zimmermann 2023-10-09 16:06:34 +02:00

parent 58b184dcb3

commit e7c814d305

1 changed files with 40 additions and 1 deletions

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drivers/gpu/drm/tiny/simpledrm.c

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