From: Peter Hurley Date: Sat, 15 Jun 2013 13:14:27 +0000 (-0400) Subject: n_tty: Reset lnext if canonical mode changes X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=6f9b028a8fb9ba4cef0bd04ad4ce149c3f1e838f;p=linux-beck.git n_tty: Reset lnext if canonical mode changes lnext escapes the next input character as a literal, and must be reset when canonical mode changes (to avoid misinterpreting a special character as a literal if canonical mode is changed back again). lnext is specifically not reset on a buffer flush so as to avoid misinterpreting the next input character as a special character. Signed-off-by: Peter Hurley Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/tty/n_tty.c b/drivers/tty/n_tty.c index c7f71cb8ee1f..e63beab3d1c3 100644 --- a/drivers/tty/n_tty.c +++ b/drivers/tty/n_tty.c @@ -1574,6 +1574,7 @@ static void n_tty_set_termios(struct tty_struct *tty, struct ktermios *old) bitmap_zero(ldata->read_flags, N_TTY_BUF_SIZE); ldata->canon_head = ldata->read_tail; ldata->erasing = 0; + ldata->lnext = 0; } if (canon_change && !L_ICANON(tty) && read_cnt(ldata))