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Date:	Wed, 04 Aug 2010 14:34:10 +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>,
	Kyungmin Park <kyungmin.park@...sung.com>,
	Marek Szyprowski <m.szyprowski@...sung.com>
Subject: [PATCH] max8998: fix off-by-one value range checking

In max8998_list_voltage() and max8998_set_voltage(),
we use ldo as array index of ldo_voltage_map.
Thus the valid range should be 0 .. ARRAY_SIZE(ldo_voltage_map)-1.

Signed-off-by: Axel Lin <axel.lin@...il.com>
---
 drivers/regulator/max8998.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/regulator/max8998.c b/drivers/regulator/max8998.c
index 03e55a1..ab67298 100644
--- a/drivers/regulator/max8998.c
+++ b/drivers/regulator/max8998.c
@@ -119,7 +119,7 @@ static int max8998_list_voltage(struct regulator_dev *rdev,
 	int ldo = max8998_get_ldo(rdev);
 	int val;
 
-	if (ldo > ARRAY_SIZE(ldo_voltage_map))
+	if (ldo >= ARRAY_SIZE(ldo_voltage_map))
 		return -EINVAL;
 
 	desc = ldo_voltage_map[ldo];
@@ -306,7 +306,7 @@ static int max8998_set_voltage(struct regulator_dev *rdev,
 	u8 val;
 	bool en_ramp = false;
 
-	if (ldo > ARRAY_SIZE(ldo_voltage_map))
+	if (ldo >= ARRAY_SIZE(ldo_voltage_map))
 		return -EINVAL;
 
 	desc = ldo_voltage_map[ldo];
-- 
1.5.4.3



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