From: Peter Hurley <peter@hurleysoftware.com>
Date: Mon, 11 Jan 2016 04:36:09 +0000 (-0800)
Subject: n_tty: Ignore all read data when closing
X-Git-Tag: v4.6-rc1~118^2~163
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=7f71b2c1441877141651d96c9a380bfb32e2ff78;p=linux.git

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 fad365aa1f5c..fb76a7d80e7e 100644
--- 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);
 	}
 }