From: Wolfram Sang <wsa@the-dreams.de>
Date: Fri, 19 Apr 2013 19:12:17 +0000 (+0200)
Subject: serial: mxs: fix buffer overflow
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=4829e7650f8a40645e4e32b26a37fb833a5e75f0;p=deliverable%2Flinux.git

serial: mxs: fix buffer overflow

SMATCH correctly found an off-by-one error:

drivers/tty/serial/mxs-auart.c:889 auart_console_write() error: buffer overflow 'auart_port' 5 <= 5

Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/tty/serial/mxs-auart.c b/drivers/tty/serial/mxs-auart.c
index d549fe1fa42a..9d357da817de 100644
--- a/drivers/tty/serial/mxs-auart.c
+++ b/drivers/tty/serial/mxs-auart.c
@@ -883,7 +883,7 @@ auart_console_write(struct console *co, const char *str, unsigned int count)
 	unsigned int old_ctrl0, old_ctrl2;
 	unsigned int to = 1000;
 
-	if (co->index >	MXS_AUART_PORTS || co->index < 0)
+	if (co->index >= MXS_AUART_PORTS || co->index < 0)
 		return;
 
 	s = auart_port[co->index];