PM8001_RESERVE_SLOT
shost->can_queue = ccb_count - PM8001_RESERVE_SLOT;
pm8001_ha->rsvd_tags = bitmap_zalloc(PM8001_RESERVE_SLOT, GFP_KERNEL);
if (tag >= PM8001_RESERVE_SLOT)
tag = find_first_zero_bit(bitmap, PM8001_RESERVE_SLOT);
if (tag >= PM8001_RESERVE_SLOT) {
tag = rq->tag + PM8001_RESERVE_SLOT;