From: Peter Hurley <peter@hurleysoftware.com>
Date: Sat, 15 Jun 2013 14:21:26 +0000 (-0400)
Subject: n_tty: Special case EXTPROC receive_buf() as raw mode
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=a1dd30e9b4c38a4a177106741b03ac6a55777286;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

n_tty: Special case EXTPROC receive_buf() as raw mode

When EXTPROC is set without ISTRIP or IUCLC, processing is
identical to raw mode; handle this receiving mode as a special-case
of raw mode.

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 900ebbe0a7ab..e9cfc77a1279 100644
--- a/drivers/tty/n_tty.c
+++ b/drivers/tty/n_tty.c
@@ -1546,10 +1546,11 @@ static void __receive_buf(struct tty_struct *tty, const unsigned char *cp,
 			  char *fp, int count)
 {
 	struct n_tty_data *ldata = tty->disc_data;
+	bool preops = I_ISTRIP(tty) || (I_IUCLC(tty) && L_IEXTEN(tty));
 
 	if (ldata->real_raw)
 		n_tty_receive_buf_real_raw(tty, cp, fp, count);
-	else if (ldata->raw)
+	else if (ldata->raw || (L_EXTPROC(tty) && !preops))
 		n_tty_receive_buf_raw(tty, cp, fp, count);
 	else {
 		char flag = TTY_NORMAL;