ISL12XX_SR_REG
isl12xx_read1(sc, ISL12XX_SR_REG, &sreg);
if ((err = isl12xx_read1(sc, ISL12XX_SR_REG, &sreg)) == 0) {
if ((err = isl12xx_read1(sc, ISL12XX_SR_REG, &sreg)) == 0) {
if ((err = isl12xx_write1(sc, ISL12XX_SR_REG, sreg)) == 0) {
isl12xx_write1(sc, ISL12XX_SR_REG, sreg);