linux-kernel - [PATCH 2/2] regulator: max8952

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Message-Id: <1287973026.23608.6.camel@mola>
Date:	Mon, 25 Oct 2010 10:17:06 +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>,
	MyungJoo Ham <myungjoo.ham@...sung.com>,
	Kyungmin Park <kyungmin.park@...sung.com>
Subject: [PATCH 2/2] regulator: max8952 - fix max8952_set_voltage

In current implementation, vid is declared as u8,
then "vid == -1" is always false, and "vid >= 0" is always true.
Thus change it to s8.

vid is always less than MAX8952_NUM_DVS_MODE in current implementation,
thus remove the cheking for "vid < MAX8952_NUM_DVS_MODE".

Signed-off-by: Axel Lin <axel.lin@...il.com>
---
 drivers/regulator/max8952.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/regulator/max8952.c b/drivers/regulator/max8952.c
index 7d6aacf..5b4601e 100644
--- a/drivers/regulator/max8952.c
+++ b/drivers/regulator/max8952.c
@@ -136,7 +136,7 @@ static int max8952_set_voltage(struct regulator_dev *rdev,
 				int min_uV, int max_uV)
 {
 	struct max8952_data *max8952 = rdev_get_drvdata(rdev);
-	u8 vid = -1, i;
+	s8 vid = -1, i;
 
 	if (!gpio_is_valid(max8952->pdata->gpio_vid0) ||
 			!gpio_is_valid(max8952->pdata->gpio_vid0)) {
@@ -153,7 +153,7 @@ static int max8952_set_voltage(struct regulator_dev *rdev,
 				vid = i;
 	}
 
-	if (vid >= 0 && vid < MAX8952_NUM_DVS_MODE) {
+	if (vid >= 0) {
 		max8952->vid0 = (vid % 2 == 1);
 		max8952->vid1 = (((vid >> 1) % 2) == 1);
 		gpio_set_value(max8952->pdata->gpio_vid0, max8952->vid0);
-- 
1.7.2



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