TULIPF_WANT_SETUP
if (sc->sc_flags & TULIPF_WANT_SETUP)
sc->sc_flags &= ~(TULIPF_WANT_SETUP | TULIPF_DOING_SETUP);
sc->sc_flags |= TULIPF_WANT_SETUP;
sc->sc_flags &= ~TULIPF_WANT_SETUP;
if (sc->sc_flags & TULIPF_WANT_SETUP)