wpi_set_txpower
int wpi_set_txpower(struct wpi_softc *, int);
(void)wpi_set_txpower(sc, 1);
if ((error = wpi_set_txpower(sc, 0)) != 0) {
if ((error = wpi_set_txpower(sc, 1)) != 0) {
if ((error = wpi_set_txpower(sc, 1)) != 0) {