[PATCH v2 2/3] drm/syncobj: reject invalid flags in drm_syncobj_find_fence

[Erik Kurzinger]

The only flag that is meaningful to drm_syncobj_find_fence is
DRM_SYNCOBJ_WAIT_FLAGS_WAIT_FOR_SUBMIT. It should return -EINVAL for any
other flag bits.

Signed-off-by: Erik Kurzinger <ekurzinger at nvidia.com>
---
 drivers/gpu/drm/drm_syncobj.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/drm_syncobj.c b/drivers/gpu/drm/drm_syncobj.c
index 97be8b140599..c59bb02e2c07 100644
--- a/drivers/gpu/drm/drm_syncobj.c
+++ b/drivers/gpu/drm/drm_syncobj.c
@@ -448,6 +448,9 @@ 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;
 
-- 
2.43.0