diff --git a/drivers/usb/gadget/s3c_udc_otg_priv.h b/drivers/usb/gadget/s3c_udc_otg_priv.h
index cc107040466f7dcc7291e02d416e0b17999b5069..fb3a019e031798c61009882d6a58acc060daaf5a 100644
--- a/drivers/usb/gadget/s3c_udc_otg_priv.h
+++ b/drivers/usb/gadget/s3c_udc_otg_priv.h
@@ -88,13 +88,11 @@ struct dwc2_udc {
 	unsigned req_pending:1, req_std:1;
 };
 
-extern struct dwc2_udc *the_controller;
-
 #define ep_is_in(EP) (((EP)->bEndpointAddress&USB_DIR_IN) == USB_DIR_IN)
 #define ep_index(EP) ((EP)->bEndpointAddress&0xF)
 #define ep_maxpacket(EP) ((EP)->ep.maxpacket)
 
-extern void otg_phy_init(struct dwc2_udc *dev);
-extern void otg_phy_off(struct dwc2_udc *dev);
+void otg_phy_init(struct dwc2_udc *dev);
+void otg_phy_off(struct dwc2_udc *dev);
 
 #endif	/* __S3C_UDC_OTG_PRIV__ */
diff --git a/include/usb/s3c_udc.h b/include/usb/s3c_udc.h
index 67c3e9112dd6980f270712749b255d3a7e3c7451..20af6299290f842f63efad62b8aea273e6cdf72d 100644
--- a/include/usb/s3c_udc.h
+++ b/include/usb/s3c_udc.h
@@ -20,6 +20,6 @@ struct s3c_plat_otg_data {
 	unsigned int	usb_gusbcfg;
 };
 
-extern int s3c_udc_probe(struct s3c_plat_otg_data *pdata);
+int s3c_udc_probe(struct s3c_plat_otg_data *pdata);
 
 #endif