[RFC PATCH drm-intel] drm: arcpgu: arc_pgu_crtc_mode_valid() can be static

[kbuild test robot]

Signed-off-by: Fengguang Wu <fengguang.wu at intel.com>
---
 arcpgu_crtc.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/arc/arcpgu_crtc.c b/drivers/gpu/drm/arc/arcpgu_crtc.c
index 99fbdae..611af74 100644
--- a/drivers/gpu/drm/arc/arcpgu_crtc.c
+++ b/drivers/gpu/drm/arc/arcpgu_crtc.c
@@ -64,8 +64,8 @@ static const struct drm_crtc_funcs arc_pgu_crtc_funcs = {
 	.atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,
 };
 
-enum drm_mode_status arc_pgu_crtc_mode_valid(struct drm_crtc *crtc,
-					     const struct drm_display_mode *mode)
+static enum drm_mode_status arc_pgu_crtc_mode_valid(struct drm_crtc *crtc,
+						    const struct drm_display_mode *mode)
 {
 	struct arcpgu_drm_private *arcpgu = crtc_to_arcpgu_priv(crtc);
 	long rate, clk_rate = mode->clock * 1000;