wdc_obio_attach
void wdc_obio_attach(struct device *, struct device *, void *);
sizeof(struct wdc_obio_softc), wdc_obio_match, wdc_obio_attach
void wdc_obio_attach(struct device *, struct device *, void *);
sizeof(struct wdc_obio_softc), wdc_obio_probe, wdc_obio_attach,