AF_83XX_MBOX_INTR_ON
if (test_and_clear_bit(AF_83XX_MBOX_INTR_ON, &ha->flags)) {
if (!test_bit(AF_83XX_MBOX_INTR_ON, &ha->flags)) {
set_bit(AF_83XX_MBOX_INTR_ON, &ha->flags);
test_bit(AF_83XX_MBOX_INTR_ON, &ha->flags))