diff options
Diffstat (limited to 'drivers/gpu/drm/drm_plane.c')
| -rw-r--r-- | drivers/gpu/drm/drm_plane.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_plane.c b/drivers/gpu/drm/drm_plane.c index 8a4e75929810..67119332c441 100644 --- a/drivers/gpu/drm/drm_plane.c +++ b/drivers/gpu/drm/drm_plane.c @@ -277,6 +277,12 @@ EXPORT_SYMBOL(drm_plane_from_index); * * Used when the plane's current framebuffer is destroyed, * and when restoring fbdev mode. + * + * Note that this function is not suitable for atomic drivers, since it doesn't + * wire through the lock acquisition context properly and hence can't handle + * retries or driver private locks. You probably want to use + * drm_atomic_helper_disable_plane() or + * drm_atomic_helper_disable_planes_on_crtc() instead. */ void drm_plane_force_disable(struct drm_plane *plane) { @@ -285,6 +291,8 @@ void drm_plane_force_disable(struct drm_plane *plane) if (!plane->fb) return; + WARN_ON(drm_drv_uses_atomic_modeset(plane->dev)); + plane->old_fb = plane->fb; ret = plane->funcs->disable_plane(plane); if (ret) { |