From: Daniel Vetter <daniel.vetter@xxxxxxxx> commit f2cbda2dba11de868759cae9c0d2bab5b8411406 upstream. It's never been wired up. Only userspace that tried to use it (and didn't actually check whether anything works, but hey it builds) is the -modesetting atomic implementation. And we just shut that up. If there's anyone else then we need to silently accept this flag no matter what, and find a new one. Because once a flag is tainted, it's lost. Reviewed-by: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx> Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@xxxxxxx> Cc: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx> Cc: Michel Dänzer <michel@xxxxxxxxxxx> Cc: Alex Deucher <alexdeucher@xxxxxxxxx> Cc: Adam Jackson <ajax@xxxxxxxxxx> Cc: Sean Paul <sean@xxxxxxxxxx> Cc: David Airlie <airlied@xxxxxxxx> Cc: stable@xxxxxxxxxxxxxxx Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxxx> Link: https://patchwork.freedesktop.org/patch/msgid/20190903190642.32588-2-daniel.vetter@xxxxxxxx Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/gpu/drm/drm_atomic_uapi.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) --- a/drivers/gpu/drm/drm_atomic_uapi.c +++ b/drivers/gpu/drm/drm_atomic_uapi.c @@ -1301,8 +1301,7 @@ int drm_mode_atomic_ioctl(struct drm_dev if (arg->reserved) return -EINVAL; - if ((arg->flags & DRM_MODE_PAGE_FLIP_ASYNC) && - !dev->mode_config.async_page_flip) + if (arg->flags & DRM_MODE_PAGE_FLIP_ASYNC) return -EINVAL; /* can't test and expect an event at the same time. */
