drm/i915: hold ref on flip object until it completes

Commit Message

Jesse Barnes Feb. 10, 2010, 11:09 p.m. UTC

None

Patch

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 2476fb4..1f92970 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -3983,6 +3983,7 @@  static void intel_unpin_work_fn(struct work_struct *__work)
 
 	mutex_lock(&work->dev->struct_mutex);
 	i915_gem_object_unpin(work->old_fb_obj);
+	drm_gem_object_unreference(work->pending_flip_obj);
 	drm_gem_object_unreference(work->old_fb_obj);
 	mutex_unlock(&work->dev->struct_mutex);
 	kfree(work);
@@ -4109,8 +4110,9 @@  static int intel_crtc_page_flip(struct drm_crtc *crtc,
 		return ret;
 	}
 
-	/* Reference the old fb object for the scheduled work. */
+	/* Reference the objects for the scheduled work. */
 	drm_gem_object_reference(work->old_fb_obj);
+	drm_gem_object_reference(obj);
 
 	crtc->fb = fb;
 	i915_gem_object_flush_write_domain(obj);