[PATCH -next] drm: Markdrm_send_event_helper with static keyword

[Zou Wei]

Fix the following sparse warning:

drivers/gpu/drm/drm_file.c:789:6: warning: symbol 'drm_send_event_helper' was not declared. Should it be static?

Signed-off-by: Zou Wei <zou_wei@xxxxxxxxxx>
---
 drivers/gpu/drm/drm_file.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/drm_file.c b/drivers/gpu/drm/drm_file.c
index 7efbccffc2ea..def5df9f19e3 100644
--- a/drivers/gpu/drm/drm_file.c
+++ b/drivers/gpu/drm/drm_file.c
@@ -786,8 +786,8 @@ EXPORT_SYMBOL(drm_event_cancel_free);
  * The timestamp variant of dma_fence_signal is used when the caller
  * sends a valid timestamp.
  */
-void drm_send_event_helper(struct drm_device *dev,
-			   struct drm_pending_event *e, ktime_t timestamp)
+static void drm_send_event_helper(struct drm_device *dev,
+				  struct drm_pending_event *e, ktime_t timestamp)
 {
 	assert_spin_locked(&dev->event_lock);
 
-- 
2.17.1