diff options
Diffstat (limited to 'drivers/gpu/drm/drm_atomic_helper.c')
| -rw-r--r-- | drivers/gpu/drm/drm_atomic_helper.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c index f7978393bc83..517f2f20d78d 100644 --- a/drivers/gpu/drm/drm_atomic_helper.c +++ b/drivers/gpu/drm/drm_atomic_helper.c @@ -1593,6 +1593,15 @@ int drm_atomic_helper_async_check(struct drm_device *dev, if (old_plane_state->fb != new_plane_state->fb) return -EINVAL; + /* + * FIXME: Since prepare_fb and cleanup_fb are always called on + * the new_plane_state for async updates we need to block framebuffer + * changes. This prevents use of a fb that's been cleaned up and + * double cleanups from occuring. + */ + if (old_plane_state->fb != new_plane_state->fb) + return -EINVAL; + funcs = plane->helper_private; if (!funcs->atomic_async_update) return -EINVAL; |