RTKIT_MGMT_PWR_STATE_SLEEP
state->iop_pwrstate = RTKIT_MGMT_PWR_STATE_SLEEP;
rtkit_set_iop_pwrstate(state, RTKIT_MGMT_PWR_STATE_SLEEP);
KASSERT(state->iop_pwrstate == RTKIT_MGMT_PWR_STATE_SLEEP);