From 0514e9acd7655c708fbf12a659ea43d835bc688a Mon Sep 17 00:00:00 2001
From: Axel Lin <axel.lin@gmail.com>
Date: Mon, 16 May 2011 22:19:01 +0800
Subject: mfd: Fix off-by-one value range checking for tps65910_i2c_write

If bytes == (TPS65910_MAX_REGISTER + 1), we have a buffer overflow when
doing memcpy(&msg[1], src, bytes).

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
---
 drivers/mfd/tps65910.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'drivers/mfd')

diff --git a/drivers/mfd/tps65910.c b/drivers/mfd/tps65910.c
index bf649cf6a0ae..e31824870b9f 100644
--- a/drivers/mfd/tps65910.c
+++ b/drivers/mfd/tps65910.c
@@ -71,7 +71,7 @@ static int tps65910_i2c_write(struct tps65910 *tps65910, u8 reg,
 	u8 msg[TPS65910_MAX_REGISTER + 1];
 	int ret;
 
-	if (bytes > (TPS65910_MAX_REGISTER + 1))
+	if (bytes > TPS65910_MAX_REGISTER)
 		return -EINVAL;
 
 	msg[0] = reg;
-- 
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