These errors can be handled by the caller. The caller can't guess whether the GBM implementation supports modifiers, for instance. Signed-off-by: Simon Ser <contact@emersion.fr> References: https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7601#note_778845 Reviewed-by: Daniel Stone <daniel@fooishbar.org> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8715>