diff --git a/drivers/staging/r8188eu/os_dep/usb_intf.c b/drivers/staging/r8188eu/os_dep/usb_intf.c
index 1eef0423529a..1071234d9e5c 100644
--- a/drivers/staging/r8188eu/os_dep/usb_intf.c
+++ b/drivers/staging/r8188eu/os_dep/usb_intf.c
@@ -73,11 +73,6 @@ static struct rtw_usb_drv rtl8188e_usb_drv = {
 
 static struct rtw_usb_drv *usb_drv = &rtl8188e_usb_drv;
 
-static inline int RT_usb_endpoint_dir_in(const struct usb_endpoint_descriptor *epd)
-{
-	return (epd->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN;
-}
-
 static inline int RT_usb_endpoint_dir_out(const struct usb_endpoint_descriptor *epd)
 {
 	return (epd->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT;
@@ -88,11 +83,6 @@ static inline int RT_usb_endpoint_xfer_bulk(const struct usb_endpoint_descriptor
 	return (epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_BULK;
 }
 
-static inline int RT_usb_endpoint_is_bulk_in(const struct usb_endpoint_descriptor *epd)
-{
-	return RT_usb_endpoint_xfer_bulk(epd) && RT_usb_endpoint_dir_in(epd);
-}
-
 static inline int RT_usb_endpoint_is_bulk_out(const struct usb_endpoint_descriptor *epd)
 {
 	return RT_usb_endpoint_xfer_bulk(epd) && RT_usb_endpoint_dir_out(epd);