n_tty: Ignore all read data when closing

On final port close (and thus final tty close), only output flow
control requests in the input data should be processed. Ignore all
other input data, including parity errors, overruns and breaks.

Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/n_tty.c b/drivers/tty/n_tty.c
index fad365aa1f5c8622e09887daf74a55234fb3e097..fb76a7d80e7e55c892254685281f924d7fe1e5f5 100644 (file)
--- a/drivers/tty/n_tty.c
+++ b/drivers/tty/n_tty.c
@@ -1524,8 +1524,6 @@ n_tty_receive_buf_closing(struct tty_struct *tty, const unsigned char *cp,
                        flag = *fp++;
                if (likely(flag == TTY_NORMAL))
                        n_tty_receive_char_closing(tty, *cp++);
-               else
-                       n_tty_receive_char_flagged(tty, *cp++, flag);
        }
 }