usb_callout_init_mtx
usb_callout_init_mtx(&sc->sc_tmo_pcd, &sc->sc_bus.bus_lock, 0);
usb_callout_init_mtx(&sc->sc_tmo_poll, &sc->sc_bus.bus_lock, 0);
usb_callout_init_mtx(&sc->sc_tmo_rhsc, &sc->sc_bus.bus_lock, 0);
usb_callout_init_mtx(&sc->sc_root_intr, &sc->sc_bus.bus_lock, 0);
usb_callout_init_mtx(&bus->power_wdog,
usb_callout_init_mtx(&sc->sc_callout, &sc->sc_bus.bus_lock, 0);
usb_callout_init_mtx(&sc->sc_callout, &sc->sc_lock, 0);
usb_callout_init_mtx(&sc->sc_watchdog, &sc->sc_lock, 0);
usb_callout_init_mtx(&sc->sc_callout, &sc->sc_lock, 0);
usb_callout_init_mtx(&sc->sc_callout, &sc->sc_lock, 0);
usb_callout_init_mtx(&sc->sc_watchdog, &sc->sc_lock, 0);
usb_callout_init_mtx(&sc->sc_button_press_callout, &sc->sc_lock, 0);
usb_callout_init_mtx(&sc->sc_cursor_update_callout, &sc->sc_lock, 0);
usb_callout_init_mtx(&sc->sc_callout, &kbd->kb_lock, 0);
usb_callout_init_mtx(&sc->sc_callout, &sc->sc_lock, 0);
usb_callout_init_mtx(&ue->ue_watchdog, ue->ue_lock, 0);
usb_callout_init_mtx(&sc->sc_watchdog, &sc->sc_lock, 0);
usb_callout_init_mtx(&sc->sc_watchdog, &sc->sc_lock, 0);
usb_callout_init_mtx(&sc->sc_rescan_timeout, &sc->sc_lock, 0);
usb_callout_init_mtx(&xfer->timeout_handle,
usb_callout_init_mtx(&sc->ratectl_ch, &sc->sc_lock, 0);
usb_callout_init_mtx(&rvp->ratectl_ch, &sc->sc_lock, 0);
usb_callout_init_mtx(&sc->ratectl_ch, &sc->sc_lock, 0);