wpi_set_txpower
if ((error = wpi_set_txpower(sc, ic->ic_curchan, 1)) != 0) {
static int wpi_set_txpower(struct wpi_softc *,
if (wpi_set_txpower(sc, sc->sc_ic.ic_curchan, 1) != 0) {
if ((error = wpi_set_txpower(sc, ni->ni_chan, 1)) != 0) {
if ((error = wpi_set_txpower(sc, ic->ic_curchan, 0)) != 0) {