Index: sys/kern/subr_terminal.c
===================================================================
--- sys/kern/subr_terminal.c
+++ sys/kern/subr_terminal.c
@@ -635,24 +635,26 @@
 static void
 termteken_respond(void *softc, const void *buf, size_t len)
 {
-#if 0
 	struct terminal *tm = softc;
 	struct tty *tp;
 
 	/*
 	 * Only inject a response into the TTY if the data actually
 	 * originated from the TTY.
-	 *
-	 * XXX: This cannot be done right now.  The TTY could pick up
-	 * other locks.  It could also in theory cause loops, when the
-	 * TTY performs echoing of a command that generates even more
-	 * input.
 	 */
 	tp = tm->tm_tty;
 	if (tp == NULL)
 		return;
 
 	ttydisc_rint_simple(tp, buf, len);
+
+	/*
+	 * XXX: This cannot be done right now.  The TTY could pick up
+	 * other locks.  It could also in theory cause loops, when the
+	 * TTY performs echoing of a command that generates even more
+	 * input.
+	 */
+#if 0
 	ttydisc_rint_done(tp);
 #endif
 }