From: Roel Kluin <roel.kluin@gmail.com>
Date: Wed, 10 Jun 2009 19:52:44 +0000 (-0700)
Subject: drivers/isdn/i4l/isdn_tty.c: fix check for array overindexing
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=395df11f5fa7fe852be28ccec8aaa15634386ad1;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

drivers/isdn/i4l/isdn_tty.c: fix check for array overindexing

The check for overindexing of dev->mdm.info[] has an off-by-one.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Karsten Keil <keil@b1-systems.de>
---

diff --git a/drivers/isdn/i4l/isdn_tty.c b/drivers/isdn/i4l/isdn_tty.c
index 1a2222cbb805..b4d4522e5071 100644
--- a/drivers/isdn/i4l/isdn_tty.c
+++ b/drivers/isdn/i4l/isdn_tty.c
@@ -1592,7 +1592,7 @@ isdn_tty_open(struct tty_struct *tty, struct file *filp)
 	int retval, line;
 
 	line = tty->index;
-	if (line < 0 || line > ISDN_MAX_CHANNELS)
+	if (line < 0 || line >= ISDN_MAX_CHANNELS)
 		return -ENODEV;
 	info = &dev->mdm.info[line];
 	if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_open"))