wdc_exec_read
if ((error = wdc_exec_read(wd, WDCC_READ, blkno, buf)) != 0)
int wdc_exec_read(struct wd_softc *, uint8_t, daddr_t, void *);
if ((error = wdc_exec_read(wd, WDCC_READ, blkno, buf)) != 0)
int wdc_exec_read(struct wd_softc *, uint8_t, daddr_t, void *);
if ((error = wdc_exec_read(wd, WDCC_READ, blkno, buf)) != 0)
int wdc_exec_read(struct wd_softc *, uint8_t, daddr_t, void *);