--- drivers/char/tty_ldisc.c

+++ drivers/char/tty_ldisc.c

@@ -451,6 +451,7 @@ static int tty_ldisc_open(struct tty_str

ret = ld->ops->open(tty);

if (ret)

clear_bit(TTY_LDISC_OPEN, &tty->flags);

+ return ret;

}

return 0;

}