Index: sys/kern/subr_terminal.c
===================================================================
--- sys/kern/subr_terminal.c	(revision 265909)
+++ sys/kern/subr_terminal.c	(working copy)
@@ -536,7 +536,8 @@ termcn_cnputc(struct consdev *cp, int c)
 	}
 	TERMINAL_UNLOCK_CONS(tm);
 
-	tm->tm_class->tc_done(tm);
+	if (c == '\r' || c == '\n')
+		tm->tm_class->tc_done(tm);
 }
 
 /*