gether_attach_gadget
status = gether_attach_gadget(ecm_opts->net, cdev->gadget);
status = gether_attach_gadget(eem_opts->net, cdev->gadget);
status = gether_attach_gadget(ncm_opts->net, cdev->gadget);
status = gether_attach_gadget(rndis_opts->net, cdev->gadget);
status = gether_attach_gadget(gether_opts->net, cdev->gadget);
EXPORT_SYMBOL_GPL(gether_attach_gadget);
int gether_attach_gadget(struct net_device *net, struct usb_gadget *g);