return (NULL);
 }
 
diff --git a/sys/dev/firewire/firewirereg.h b/sys/dev/firewire/firewirereg.h
index d17f7a15785a..97a53606c001 100644
--- a/sys/dev/firewire/firewirereg.h
+++ b/sys/dev/firewire/firewirereg.h
@@ -69,6 +69,7 @@ struct fw_device {
 struct firewire_softc {
 	struct cdev *dev;
 	struct firewire_comm *fc;
+	int watchdog_clock;
 };
 
 #define FW_MAX_DMACH 0x20