drm/nouveau: add some debug output if nouveau_mm busy at destroy time

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

1 files changed, 9 insertions, 2 deletions

diff --git a/drivers/gpu/drm/nouveau/nouveau_mm.c b/drivers/gpu/drm/nouveau/nouveau_mm.c
index 7609756b6faf..1640dec3b823 100644
--- a/drivers/gpu/drm/nouveau/nouveau_mm.c
+++ b/drivers/gpu/drm/nouveau/nouveau_mm.c
@@ -158,11 +158,18 @@ int
 nouveau_mm_fini(struct nouveau_mm **prmm)
 {
         struct nouveau_mm *rmm = *prmm;
-        struct nouveau_mm_node *heap =
+        struct nouveau_mm_node *node, *heap =
                 list_first_entry(&rmm->nodes, struct nouveau_mm_node, nl_entry);
 
-        if (!list_is_singular(&rmm->nodes))
+        if (!list_is_singular(&rmm->nodes)) {
+                printk(KERN_ERR "nouveau_mm not empty at destroy time!\n");
+                list_for_each_entry(node, &rmm->nodes, nl_entry) {
+                        printk(KERN_ERR "0x%02x: 0x%08x 0x%08x\n",
+                               node->type, node->offset, node->length);
+                }
+                WARN_ON(1);
                 return -EBUSY;
+        }
 
         kfree(heap);
         kfree(rmm);