1 files changed, 15 insertions, 0 deletions

diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.c b/drivers/gpu/drm/nouveau/nouveau_bo.c
index 84f85183d04..f6f44779d82 100644
--- a/drivers/gpu/drm/nouveau/nouveau_bo.c
+++ b/drivers/gpu/drm/nouveau/nouveau_bo.c
@@ -36,6 +36,21 @@
 #include <linux/log2.h>
 #include <linux/slab.h>
 
+int
+nouveau_bo_sync_gpu(struct nouveau_bo *nvbo, struct nouveau_channel *chan)
+{
+        struct nouveau_fence *prev_fence = nvbo->bo.sync_obj;
+        int ret;
+
+        if (!prev_fence || nouveau_fence_channel(prev_fence) == chan)
+                return 0;
+
+        spin_lock(&nvbo->bo.lock);
+        ret = ttm_bo_wait(&nvbo->bo, false, false, false);
+        spin_unlock(&nvbo->bo.lock);
+        return ret;
+}
+
 static void
 nouveau_bo_del_ttm(struct ttm_buffer_object *bo)
 {