Noticed while reviewing the fence locking in the radeon pageflip
handler.

v2: Instead of grabbing the bdev->fence_lock in object_transfer just
move the single callsite of that function a few lines, so that it is
protected by the fence_lock. Suggested by Jerome Glisse.

v3: Fix typo in commit message.

Signed-off-by: Daniel Vetter <daniel.vet...@ffwll.ch>
---
 drivers/gpu/drm/ttm/ttm_bo_util.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/ttm/ttm_bo_util.c 
b/drivers/gpu/drm/ttm/ttm_bo_util.c
index b9c4e51..c5d83a5 100644
--- a/drivers/gpu/drm/ttm/ttm_bo_util.c
+++ b/drivers/gpu/drm/ttm/ttm_bo_util.c
@@ -654,11 +654,13 @@ int ttm_bo_move_accel_cleanup(struct ttm_buffer_object 
*bo,
                 */
 
                set_bit(TTM_BO_PRIV_FLAG_MOVING, &bo->priv_flags);
+
+               /* ttm_buffer_object_transfer accesses bo->sync_obj */
+               ret = ttm_buffer_object_transfer(bo, &ghost_obj);
                spin_unlock(&bdev->fence_lock);
                if (tmp_obj)
                        driver->sync_obj_unref(&tmp_obj);
 
-               ret = ttm_buffer_object_transfer(bo, &ghost_obj);
                if (ret)
                        return ret;
 
-- 
1.7.10.4

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