From: Daniel Vetter daniel.vetter@ffwll.ch
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@linux.intel.com Reviewed-by: Nicholas Kazlauskas nicholas.kazlauskas@amd.com Cc: Maarten Lankhorst maarten.lankhorst@linux.intel.com Cc: Michel Dänzer michel@daenzer.net Cc: Alex Deucher alexdeucher@gmail.com Cc: Adam Jackson ajax@redhat.com Cc: Sean Paul sean@poorly.run Cc: David Airlie airlied@linux.ie Cc: stable@vger.kernel.org Signed-off-by: Daniel Vetter daniel.vetter@intel.com Link: https://patchwork.freedesktop.org/patch/msgid/20190903190642.32588-2-daniel.... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- 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. */