drm/ttm: Fix a sync object leak.

If there are multiple simultaneous waiters for the same buffer object, a temporary reference to its sync object may be leaked. Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
git-mirror · Aug 4, 2009 · fee280d · fee280d
1 parent c9b7fb5
commit fee280d
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c
@@ -1575,6 +1575,10 @@ int ttm_bo_wait(struct ttm_buffer_object *bo,
 			driver->sync_obj_unref(&sync_obj);
 			driver->sync_obj_unref(&tmp_obj);
 			spin_lock(&bo->lock);
+		} else {
+			spin_unlock(&bo->lock);
+			driver->sync_obj_unref(&sync_obj);
+			spin_lock(&bo->lock);
 		}
 	}
 	return 0;