[PATCH] drm/ast: make the symbol 'ast_primary_plane_helper_atomic_update' static

[zhong jiang]

Fix the following sparse warning.

drivers/gpu/drm/ast/ast_mode.c:563:6: warning: symbol 'ast_primary_plane_helper_atomic_update' was not declared. Should it be static?

Signed-off-by: zhong jiang <zhongjiang@xxxxxxxxxx>
---
 drivers/gpu/drm/ast/ast_mode.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/ast/ast_mode.c b/drivers/gpu/drm/ast/ast_mode.c
index cde1cae..44b598d 100644
--- a/drivers/gpu/drm/ast/ast_mode.c
+++ b/drivers/gpu/drm/ast/ast_mode.c
@@ -560,7 +560,7 @@ static int ast_primary_plane_helper_atomic_check(struct drm_plane *plane,
 	return 0;
 }
 
-void ast_primary_plane_helper_atomic_update(struct drm_plane *plane,
+static void ast_primary_plane_helper_atomic_update(struct drm_plane *plane,
 					    struct drm_plane_state *old_state)
 {
 	struct ast_private *ast = plane->dev->dev_private;
-- 
1.7.12.4