RTT_DONE
clear_bit(RTT_DONE, &caldata->cal_flags);
set_bit(RTT_DONE, &ah->caldata->cal_flags);
clear_bit(RTT_DONE, &ah->caldata->cal_flags);
if (!test_bit(RTT_DONE, &ah->caldata->cal_flags))
!test_bit(RTT_DONE, &ah->caldata->cal_flags))))