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>
diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c
index 6538d42..aa82d53 100644
--- a/drivers/gpu/drm/ttm/ttm_bo.c
+++ b/drivers/gpu/drm/ttm/ttm_bo.c
@@ -1575,6 +1575,10 @@
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;