drm/nouveau/fence/g84-: protect against concurrent access to semaphore buffers

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

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/gpu/drm/nouveau/nouveau_fence.h b/drivers/gpu/drm/nouveau/nouveau_fence.h
index ccdce1b4eec4..d5e58a38f160 100644
--- a/drivers/gpu/drm/nouveau/nouveau_fence.h
+++ b/drivers/gpu/drm/nouveau/nouveau_fence.h
@@ -99,6 +99,7 @@ struct nv84_fence_priv {
 	struct nouveau_bo *bo;
 	struct nouveau_bo *bo_gart;
 	u32 *suspend;
+	struct mutex mutex;
 };
 
 int  nv84_fence_context_new(struct nouveau_channel *);