__wdccommand_done
xfer->c_kill_xfer = __wdccommand_done;
__wdccommand_done(chp, xfer);
__wdccommand_done(chp, xfer);
__wdccommand_done(chp, xfer);
__wdccommand_done(chp, xfer);
void __wdccommand_done(struct channel_softc *, struct wdc_xfer *);