diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c
index f546d1e8af82f10e1cfe1d9c6c66ec9015bc1a68..061d26dd07515f910d7f460d27fc3d584d1ffaa8 100644
--- a/drivers/gpu/drm/drm_fb_helper.c
+++ b/drivers/gpu/drm/drm_fb_helper.c
@@ -236,7 +236,7 @@ bool drm_fb_helper_restore_fbdev_mode(struct drm_fb_helper *fb_helper)
 }
 EXPORT_SYMBOL(drm_fb_helper_restore_fbdev_mode);
 
-bool drm_fb_helper_force_kernel_mode(void)
+static bool drm_fb_helper_force_kernel_mode(void)
 {
 	bool ret, error = false;
 	struct drm_fb_helper *helper;