diff --git a/[refs] b/[refs]
index 1c744361c1fb..5276ca84ff76 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 87a326a38589e1c919af5f86a59cd571ff0aa831
+refs/heads/master: 23c45e8ed203f933753fb66a6290c4ff853eb7bb
diff --git a/trunk/drivers/gpu/drm/nouveau/nouveau_bo.c b/trunk/drivers/gpu/drm/nouveau/nouveau_bo.c
index 8d5dd980240d..f4ee43db00aa 100644
--- a/trunk/drivers/gpu/drm/nouveau/nouveau_bo.c
+++ b/trunk/drivers/gpu/drm/nouveau/nouveau_bo.c
@@ -942,13 +942,17 @@ nouveau_ttm_fault_reserve_notify(struct ttm_buffer_object *bo)
 void
 nouveau_bo_fence(struct nouveau_bo *nvbo, struct nouveau_fence *fence)
 {
-	spin_lock(&nvbo->bo.bdev->fence_lock);
-	__nouveau_fence_unref(&nvbo->bo.sync_obj);
+	struct nouveau_fence *old_fence;
 
 	if (likely(fence))
-		nvbo->bo.sync_obj = nouveau_fence_ref(fence);
+		nouveau_fence_ref(fence);
 
+	spin_lock(&nvbo->bo.bdev->fence_lock);
+	old_fence = nvbo->bo.sync_obj;
+	nvbo->bo.sync_obj = fence;
 	spin_unlock(&nvbo->bo.bdev->fence_lock);
+
+	nouveau_fence_unref(&old_fence);
 }
 
 struct ttm_bo_driver nouveau_bo_driver = {