ata_delref
ata_delref(sc->sc_chan);
ata_delref(chp);
ata_delref(chp);
.ata_delref = wdc_ata_delref,
ata_delref(chp);
void (*ata_delref)(struct ata_drive_datas *);
void ata_delref(struct ata_channel *);
wd->atabus->ata_delref(wd->drvp);
wd->atabus->ata_delref(wd->drvp);
sc->atabus->ata_delref(sc->drvp);
.ata_delref = ahci_ata_delref,
.ata_delref = mvsata_delref,
.ata_delref = siisata_ata_delref,
.ata_delref = NULL,
ata_delref(&sc->ata_channel);