drm/nouveau: add spinlock around ramht modifications

Reviewed-by: Francisco Jerez <currojerez@riseup.net>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/gpu/drm/nouveau/nouveau_ramht.h b/drivers/gpu/drm/nouveau/nouveau_ramht.h
index f37737a9364..b79cb5e1a8f 100644
--- a/drivers/gpu/drm/nouveau/nouveau_ramht.h
+++ b/drivers/gpu/drm/nouveau/nouveau_ramht.h
@@ -34,7 +34,8 @@ struct nouveau_ramht_entry {
 
 struct nouveau_ramht {
         struct drm_device *dev;
-        int refcount;
+        struct kref refcount;
+        spinlock_t lock;
         struct nouveau_gpuobj *gpuobj;
         struct list_head entries;
         int bits;