drm/nouveau: warn when trying to free mm which is still in use

Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

diff --git a/drivers/gpu/drm/nouveau/core/core/mm.c b/drivers/gpu/drm/nouveau/core/core/mm.c
index bfddf87..4d62064 100644 (file)
--- a/drivers/gpu/drm/nouveau/core/core/mm.c
+++ b/drivers/gpu/drm/nouveau/core/core/mm.c
@@ -236,7 +236,7 @@ nouveau_mm_fini(struct nouveau_mm *mm)
        int nodes = 0;
 
        list_for_each_entry(node, &mm->nodes, nl_entry) {
-               if (nodes++ == mm->heap_nodes)
+               if (WARN_ON(nodes++ == mm->heap_nodes))
                        return -EBUSY;
        }