xen/xenbus: remove unused xenbus_bind_evtchn()

xenbus_bind_evtchn() has no callers so remove it.
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>

drivers/xen/xenbus/xenbus_client.c

@@ -400,33 +400,6 @@ int xenbus_alloc_evtchn(struct xenbus_device *dev, int *port)
 EXPORT_SYMBOL_GPL(xenbus_alloc_evtchn);
 
 
-/**
- * Bind to an existing interdomain event channel in another domain. Returns 0
- * on success and stores the local port in *port. On error, returns -errno,
- * switches the device to XenbusStateClosing, and saves the error in XenStore.
- */
-int xenbus_bind_evtchn(struct xenbus_device *dev, int remote_port, int *port)
-{
-	struct evtchn_bind_interdomain bind_interdomain;
-	int err;
-
-	bind_interdomain.remote_dom = dev->otherend_id;
-	bind_interdomain.remote_port = remote_port;
-
-	err = HYPERVISOR_event_channel_op(EVTCHNOP_bind_interdomain,
-					  &bind_interdomain);
-	if (err)
-		xenbus_dev_fatal(dev, err,
-				 "binding to event channel %d from domain %d",
-				 remote_port, dev->otherend_id);
-	else
-		*port = bind_interdomain.local_port;
-
-	return err;
-}
-EXPORT_SYMBOL_GPL(xenbus_bind_evtchn);
-
-
 /**
  * Free an existing event channel. Returns 0 on success or -errno on error.
  */

include/xen/xenbus.h

@@ -207,7 +207,6 @@ int xenbus_unmap_ring(struct xenbus_device *dev,
 		      grant_handle_t handle, void *vaddr);
 
 int xenbus_alloc_evtchn(struct xenbus_device *dev, int *port);
-int xenbus_bind_evtchn(struct xenbus_device *dev, int remote_port, int *port);
 int xenbus_free_evtchn(struct xenbus_device *dev, int port);
 
 enum xenbus_state xenbus_read_driver_state(const char *path);