linux-kernel - [PATCH] regulator: Fix the logic to ensure new voltage setting in valid range

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Message-ID: <1334148838.8687.1.camel@phoenix>
Date:	Wed, 11 Apr 2012 20:53:58 +0800
From:	Axel Lin <axel.lin@...il.com>
To:	linux-kernel@...r.kernel.org
Cc:	Kyungmin Park <kyungmin.park@...sung.com>,
	MyungJoo Ham <myungjoo.ham@...sung.com>,
	Liam Girdwood <lrg@...com>,
	Mark Brown <broonie@...nsource.wolfsonmicro.com>
Subject: [PATCH] regulator: Fix the logic to ensure new voltage setting in
 valid range

I think this is a typo.
To ensure new voltage setting won't greater than desc->max,
the equation should be desc->min + desc->step * new_val <= desc->max.

Signed-off-by: Axel Lin <axel.lin@...il.com>
---
 drivers/regulator/max8997.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/regulator/max8997.c b/drivers/regulator/max8997.c
index db09244..77feeeb 100644
--- a/drivers/regulator/max8997.c
+++ b/drivers/regulator/max8997.c
@@ -682,7 +682,7 @@ static int max8997_set_voltage_buck(struct regulator_dev *rdev,
 		}
 
 		new_val++;
-	} while (desc->min + desc->step + new_val <= desc->max);
+	} while (desc->min + desc->step * new_val <= desc->max);
 
 	new_idx = tmp_idx;
 	new_val = tmp_val;
-- 
1.7.5.4



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