REQ_BUS_ON
if ((req_type & REQ_BUS_ON) && mmc->card && !mmc->ops->get_cd(mmc)) {
pwr_state = REQ_BUS_ON;
pwr_state & REQ_BUS_ON);
pwr_state & REQ_BUS_ON);
pwr_state & REQ_BUS_ON);
req_type = !val ? REQ_BUS_OFF : REQ_BUS_ON;