mtw_read_region_1
error = mtw_read_region_1(sc, reg, (uint8_t *)&tmp, sizeof tmp);
static int mtw_read_region_1(struct mtw_softc *, uint16_t, uint8_t *, int);
mtw_read_region_1(sc, MTW_TX_STA_CNT0, (uint8_t *)sta,
error = mtw_read_region_1(sc, MTW_TX_STA_CNT0, (uint8_t *)sta,
mtw_read_region_1(sc, MTW_TSF_TIMER_DW0, (uint8_t *)buf, sizeof(*buf));