diff --git a/drivers/usb/chipidea/usbmisc_imx.c b/drivers/usb/chipidea/usbmisc_imx.c
index 714a6bd810ede0de96b28d3523bed2baa703f1de..1c6610acbd3ebdc103687964e86ffd8e3b1c3857 100644
--- a/drivers/usb/chipidea/usbmisc_imx.c
+++ b/drivers/usb/chipidea/usbmisc_imx.c
@@ -243,13 +243,13 @@ static struct platform_driver usbmisc_imx_driver = {
 	 },
 };
 
-int usbmisc_imx_drv_init(void)
+static int usbmisc_imx_drv_init(void)
 {
 	return platform_driver_register(&usbmisc_imx_driver);
 }
 subsys_initcall(usbmisc_imx_drv_init);
 
-void usbmisc_imx_drv_exit(void)
+static void usbmisc_imx_drv_exit(void)
 {
 	platform_driver_unregister(&usbmisc_imx_driver);
 }