SOFTINT_USB
sc->sc_doorbell_si = softint_establish(SOFTINT_USB | SOFTINT_MPSAFE,
sc->sc_pcd_si = softint_establish(SOFTINT_USB | SOFTINT_MPSAFE,
sc->sc_rhsc_si = softint_establish(SOFTINT_USB | SOFTINT_MPSAFE,
cn->cn_si = softint_establish(SOFTINT_USB, ucom_cnput_softintr, sc);
sc->sc_si = softint_establish(SOFTINT_USB, ucom_softintr, sc);
sc->sc_bus->ub_soft = softint_establish(SOFTINT_USB | SOFTINT_MPSAFE,