diff --git a/sys/kern/tty.c b/sys/kern/tty.c
index 1684ede1a70d..d54f5f7a8b27 100644
--- a/sys/kern/tty.c
+++ b/sys/kern/tty.c
@@ -36,7 +36,7 @@
  * SUCH DAMAGE.
  *
  *	@(#)tty.c	8.8 (Berkeley) 1/21/94
- * $Id: tty.c,v 1.73 1995/12/13 15:13:11 julian Exp $
+ * $Id: tty.c,v 1.74 1995/12/14 08:31:56 phk Exp $
  */
 
 /*-
@@ -1251,6 +1251,32 @@ ttyunblock(tp)
 	ttstart(tp);
 }
 
+#ifdef notyet
+/* Not used by any current (i386) drivers. */
+/*
+ * Restart after an inter-char delay.
+ */
+void
+ttrstrt(tp_arg)
+	void *tp_arg;
+{
+	struct tty *tp;
+	int s;
+
+#ifdef DIAGNOSTIC
+	if (tp_arg == NULL)
+		panic("ttrstrt");
+#endif
+	tp = tp_arg;
+	s = spltty();
+
+	CLR(tp->t_state, TS_TIMEOUT);
+	ttstart(tp);
+
+	splx(s);
+}
+#endif
+
 int
 ttstart(tp)
 	struct tty *tp;
diff --git a/sys/sys/tty.h b/sys/sys/tty.h
index 4ccc24d398e2..f0ada35d86ed 100644
--- a/sys/sys/tty.h
+++ b/sys/sys/tty.h
@@ -36,7 +36,7 @@
  * SUCH DAMAGE.
  *
  *	@(#)tty.h	8.6 (Berkeley) 1/21/94
- * $Id: tty.h,v 1.32 1995/12/08 11:19:32 julian Exp $
+ * $Id: tty.h,v 1.33 1995/12/14 08:32:37 phk Exp $
  */
 
 #ifndef _SYS_TTY_H_
@@ -235,6 +235,7 @@ void	 termioschars __P((struct termios *t));
 int	 tputchar __P((int c, struct tty *tp));
 int	 ttioctl __P((struct tty *tp, int com, void *data, int flag));
 int	 ttread __P((struct tty *tp, struct uio *uio, int flag));
+void	 ttrstrt __P((void *tp));
 int	 ttyselect __P((struct tty *tp, int rw, struct proc *p));
 int	 ttselect __P((dev_t dev, int rw, struct proc *p));
 void	 ttsetwater __P((struct tty *tp));