--- zzzz-none-000/linux-4.4.60/drivers/usb/gadget/function/g_zero.h	2017-04-08 07:53:53.000000000 +0000
+++ hawkeye-5590-729/linux-4.4.60/drivers/usb/gadget/function/g_zero.h	2022-03-30 14:21:52.000000000 +0000
@@ -59,7 +59,6 @@
 int lb_modinit(void);
 
 /* common utilities */
-void free_ep_req(struct usb_ep *ep, struct usb_request *req);
 void disable_endpoints(struct usb_composite_dev *cdev,
 		struct usb_ep *in, struct usb_ep *out,
 		struct usb_ep *iso_in, struct usb_ep *iso_out);