drm: reference count event->completion

[linux-2.6-microblaze.git] / drivers / gpu / drm / drm_atomic_helper.c

diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c
index 5e52244..9460f3a 100644 (file)
--- a/drivers/gpu/drm/drm_atomic_helper.c
+++ b/drivers/gpu/drm/drm_atomic_helper.c
@@ -1355,6 +1355,15 @@ static int stall_checks(struct drm_crtc *crtc, bool nonblock)
        return ret < 0 ? ret : 0;
 }
 
+void release_crtc_commit(struct completion *completion)
+{
+       struct drm_crtc_commit *commit = container_of(completion,
+                                                     typeof(*commit),
+                                                     flip_done);
+
+       drm_crtc_commit_put(commit);
+}
+
 /**
  * drm_atomic_helper_setup_commit - setup possibly nonblocking commit
  * @state: new modeset state to be committed
@@ -1447,6 +1456,8 @@ int drm_atomic_helper_setup_commit(struct drm_atomic_state *state,
                }
 
                crtc_state->event->base.completion = &commit->flip_done;
+               crtc_state->event->base.completion_release = release_crtc_commit;
+               drm_crtc_commit_get(commit);
        }
 
        return 0;