diff --git a/[refs] b/[refs]
index 8b8282b3cb0a..d051c4dd4736 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 539d24181753e40174746d576d415bfb56131975
+refs/heads/master: f4b7fb94c576265ceffc43031805ade32fa80c6a
diff --git a/trunk/drivers/gpu/drm/radeon/radeon_object.c b/trunk/drivers/gpu/drm/radeon/radeon_object.c
index 06def708b014..a8d18bcae7db 100644
--- a/trunk/drivers/gpu/drm/radeon/radeon_object.c
+++ b/trunk/drivers/gpu/drm/radeon/radeon_object.c
@@ -168,13 +168,15 @@ void radeon_bo_kunmap(struct radeon_bo *bo)
 void radeon_bo_unref(struct radeon_bo **bo)
 {
 	struct ttm_buffer_object *tbo;
+	struct radeon_device *rdev;
 
 	if ((*bo) == NULL)
 		return;
+	rdev = (*bo)->rdev;
 	tbo = &((*bo)->tbo);
-	mutex_lock(&(*bo)->rdev->vram_mutex);
+	mutex_lock(&rdev->vram_mutex);
 	ttm_bo_unref(&tbo);
-	mutex_unlock(&(*bo)->rdev->vram_mutex);
+	mutex_unlock(&rdev->vram_mutex);
 	if (tbo == NULL)
 		*bo = NULL;
 }