static void frontend_changed(struct xenbus_watch *watch,
			     const char **vec, unsigned int len)
{
	DPRINTK("");

	xenbus_dev_changed(vec[XS_WATCH_PATH], &xenbus_frontend);
}
static void frontend_changed(struct xenbus_watch *watch,
			     const char *path, const char *token)
{
	DPRINTK("");

	xenbus_dev_changed(path, &xenbus_frontend);
}