SR1_RNE
if (!ISSET(sr1, SR1_RNE)) {
& SR1_RNE)) {
& SR1_RNE))
while (ISSET(bus_space_read_4(iot, ioh, SACOM_SR1), SR1_RNE)
while (bus_space_read_4(sc->sc_iot, sc->sc_ioh, SACOM_SR1) & SR1_RNE) {