diff --git a/drivers/gpu/drm/exynos/exynos_drm_hdmi.c b/drivers/gpu/drm/exynos/exynos_drm_hdmi.c
index 427d2dea9f07..28644539b305 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_hdmi.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_hdmi.c
@@ -108,7 +108,7 @@ static bool drm_hdmi_is_connected(struct device *dev)
 	return false;
 }
 
-struct edid *drm_hdmi_get_edid(struct device *dev,
+static struct edid *drm_hdmi_get_edid(struct device *dev,
 			struct drm_connector *connector)
 {
 	struct drm_hdmi_context *ctx = to_context(dev);