usb_unregister_event_cbs
usb_unregister_event_cbs(dip, &usb_ac_events);
usb_unregister_event_cbs(dip, &usb_as_events);
usb_unregister_event_cbs(dip, &ccid_usb_events);
usb_unregister_event_cbs(dip, &hid_events);
usb_unregister_event_cbs(dip, &usbprn_events);
usb_unregister_event_cbs(dip, &ugen_skel_events);
usb_unregister_event_cbs(dip,
usb_unregister_event_cbs(ecmp->ecm_dip, &usbecm_events);
usb_unregister_event_cbs(uf->uf_dip, uf->uf_usb_events);
usb_unregister_event_cbs(acmp->acm_dip,
usb_unregister_event_cbs(ksp->ks_dip, ksp->ks_usb_events);
usb_unregister_event_cbs(plp->pl_dip, plp->pl_usb_events);
usb_unregister_event_cbs(dip, &usbvc_events);
usb_unregister_event_cbs(scsa2usbp->scsa2usb_dip, &scsa2usb_events);
usb_unregister_event_cbs(dip, &hubd_events);
usb_unregister_event_cbs(dip, ev_data);
usb_unregister_event_cbs(dip, usb_evt_data);
usb_unregister_event_cbs(dip, NULL);
usb_unregister_event_cbs(dip, usb_evdata);
void usb_unregister_event_cbs(