rtsx_read
rtsx_read(sc, RTSX_SD_DATA_STATE, &val);
static int rtsx_read(struct rtsx_softc *, uint16_t, uint8_t *);
int err = rtsx_read((sc), (reg), (val)); \
if (rtsx_read(sc, RTSX_SD_STAT1, &stat1) == 0 &&