-int wdprobe(struct isa_device *);
-int wdattach(struct isa_device *);
-void wdstrategy(struct buf *);
-void wdintr(struct intrframe);
-int wdopen(dev_t, int, int, struct proc *);
+void wdstrategy(struct buf *bp);
+void wdintr(int unit);
+int wdopen(dev_t dev, int flags, int fmt, struct proc *p);