SMF_CARD_PRESENT
if (ISSET(sc->sc_flags, SMF_CARD_PRESENT) &&
if (ISSET(sc->sc_flags, SMF_CARD_PRESENT)) {
CLR(sc->sc_flags, SMF_CARD_PRESENT);
if (!ISSET(sc->sc_flags, SMF_CARD_PRESENT)) {
SET(sc->sc_flags, SMF_CARD_PRESENT);
if (ISSET(sc->sc_flags, SMF_CARD_PRESENT)) {
CLR(sc->sc_flags, SMF_CARD_PRESENT);