diff --git a/drivers/staging/r8188eu/os_dep/usb_intf.c b/drivers/staging/r8188eu/os_dep/usb_intf.c
index da93512993f1..1eef0423529a 100644
--- a/drivers/staging/r8188eu/os_dep/usb_intf.c
+++ b/drivers/staging/r8188eu/os_dep/usb_intf.c
@@ -83,11 +83,6 @@ static inline int RT_usb_endpoint_dir_out(const struct usb_endpoint_descriptor *
 	return (epd->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT;
 }
 
-static inline int RT_usb_endpoint_xfer_int(const struct usb_endpoint_descriptor *epd)
-{
-	return (epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT;
-}
-
 static inline int RT_usb_endpoint_xfer_bulk(const struct usb_endpoint_descriptor *epd)
 {
 	return (epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_BULK;
@@ -103,11 +98,6 @@ static inline int RT_usb_endpoint_is_bulk_out(const struct usb_endpoint_descript
 	return RT_usb_endpoint_xfer_bulk(epd) && RT_usb_endpoint_dir_out(epd);
 }
 
-static inline int usb_endpoint_is_int(const struct usb_endpoint_descriptor *epd)
-{
-	return RT_usb_endpoint_xfer_int(epd) && RT_usb_endpoint_dir_in(epd);
-}
-
 static inline int RT_usb_endpoint_num(const struct usb_endpoint_descriptor *epd)
 {
 	return epd->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;