QM_RST_SCHED
while (test_bit(QM_RST_SCHED, &qm->misc_ctl) ||
clear_bit(QM_RST_SCHED, &qm->misc_ctl);
clear_bit(QM_RST_SCHED, &qm->misc_ctl);
!test_and_set_bit(QM_RST_SCHED, &qm->misc_ctl))
clear_bit(QM_RST_SCHED, &qm->misc_ctl);