diff --git a/include/linux/usb.h b/include/linux/usb.h
index dd9733c..52c449e 100644
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -1451,6 +1451,7 @@
 extern int usb_unlink_urb(struct urb *urb);
 extern void usb_kill_urb(struct urb *urb);
 extern void usb_kill_anchored_urbs(struct usb_anchor *anchor);
+extern void usb_unlink_anchored_urbs(struct usb_anchor *anchor);
 extern void usb_anchor_urb(struct urb *urb, struct usb_anchor *anchor);
 extern void usb_unanchor_urb(struct urb *urb);
 extern int usb_wait_anchor_empty_timeout(struct usb_anchor *anchor,