AF_MBOX_COMMAND_DONE
set_bit(AF_MBOX_COMMAND_DONE, &ha->flags);
while (test_bit(AF_MBOX_COMMAND_DONE, &ha->flags) == 0) {
if (!test_bit(AF_MBOX_COMMAND_DONE, &ha->flags)) {
clear_bit(AF_MBOX_COMMAND_DONE, &ha->flags);
set_bit(AF_MBOX_COMMAND_DONE, &ha->flags);