diff --git a/drivers/gpu/drm/drm_syncobj.c b/drivers/gpu/drm/drm_syncobj.c
index 56b0677acfa3da9f31f9e7a6a3c97764c5248f13..fada77f04a8c31f27e5946c51f61c1a0d1233b5a 100644
--- a/drivers/gpu/drm/drm_syncobj.c
+++ b/drivers/gpu/drm/drm_syncobj.c
@@ -441,6 +441,9 @@ int drm_syncobj_find_fence(struct drm_file *file_private,
 	u64 timeout = nsecs_to_jiffies64(DRM_SYNCOBJ_WAIT_FOR_SUBMIT_TIMEOUT);
 	int ret;
 
+	if (flags & ~DRM_SYNCOBJ_WAIT_FLAGS_WAIT_FOR_SUBMIT)
+		return -EINVAL;
+
 	if (!syncobj)
 		return -ENOENT;