usbd_reset_port
usbd_reset_port(sc->sc_uhub, sc->sc_port);
if (usbd_reset_port(sc->sc_hub, port)) {
usbd_reset_port(up->parent, port);
usbd_reset_port(up->parent, port);
usbd_reset_port(dev->myhub, port);
int usbd_reset_port(struct usbd_device *, int);