linux-kernel - [PATCH] regulator: ab8500 - fix off-by-one value range checking for selector

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Date:	Sat, 04 Sep 2010 23:06:41 +0800
From:	Axel Lin <axel.lin@...il.com>
To:	linux-kernel <linux-kernel@...r.kernel.org>
Cc:	Liam Girdwood <lrg@...mlogic.co.uk>,
	Mark Brown <broonie@...nsource.wolfsonmicro.com>,
	Linus Walleij <linus.walleij@...ricsson.com>,
	Sundar Iyer <sundar.iyer@...ricsson.com>
Subject: [PATCH] regulator: ab8500 - fix off-by-one value range checking
 for selector

selector is used as array index of info->supported_voltages
Thus the valid value range should be 0 .. info->voltages_len -1

Signed-off-by: Axel Lin <axel.lin@...il.com>
---
 drivers/regulator/ab8500.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/regulator/ab8500.c b/drivers/regulator/ab8500.c
index 3d09580..28c7ae6 100644
--- a/drivers/regulator/ab8500.c
+++ b/drivers/regulator/ab8500.c
@@ -157,7 +157,7 @@ static int ab8500_list_voltage(struct regulator_dev *rdev, unsigned selector)
 	if (info->fixed_uV)
 		return info->fixed_uV;
 
-	if (selector > info->voltages_len)
+	if (selector >= info->voltages_len)
 		return -EINVAL;
 
 	return info->supported_voltages[selector];
-- 
1.7.2



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