WDCC_WRITEDMA
WDCC_READDMA : WDCC_WRITEDMA;
case WDCC_WRITEDMA:
(ata_bio->flags & ATA_READ) ? WDCC_READDMA : WDCC_WRITEDMA;
case WDCC_WRITEDMA:
cmd = (ata_bio->flags & ATA_READ) ? WDCC_READDMA : WDCC_WRITEDMA;