linux-kernel - [PATCH 2/2] regulator: aat2870: Remove a redundant bitwise and operation

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Message-ID: <1322460468.4954.2.camel@phoenix>
Date:	Mon, 28 Nov 2011 14:07:48 +0800
From:	Axel Lin <axel.lin@...il.com>
To:	linux-kernel@...r.kernel.org
Cc:	Jin Park <jinyoungp@...dia.com>, Liam Girdwood <lrg@...com>,
	Mark Brown <broonie@...nsource.wolfsonmicro.com>
Subject: [PATCH 2/2] regulator: aat2870: Remove a redundant bitwise and
 operation

The implementation in aat2870_update() already did the bitwise and operation
against mask parameter.

Signed-off-by: Axel Lin <axel.lin@...il.com>
Acked-by: Mark Brown <broonie@...nsource.wolfsonmicro.com>
---
It was sent on https://lkml.org/lkml/2011/7/5/560
and resent on https://lkml.org/lkml/2011/8/29/210.

Seems the patch is lost so I resend it again.
Axel
 drivers/regulator/aat2870-regulator.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/regulator/aat2870-regulator.c b/drivers/regulator/aat2870-regulator.c
index 43b25cc..685ad43 100644
--- a/drivers/regulator/aat2870-regulator.c
+++ b/drivers/regulator/aat2870-regulator.c
@@ -63,7 +63,7 @@ static int aat2870_ldo_set_voltage_sel(struct regulator_dev *rdev,
 	struct aat2870_data *aat2870 = dev_get_drvdata(ri->pdev->dev.parent);
 
 	return aat2870->update(aat2870, ri->voltage_addr, ri->voltage_mask,
-			(selector << ri->voltage_shift) & ri->voltage_mask);
+			       selector << ri->voltage_shift);
 }
 
 static int aat2870_ldo_get_voltage_sel(struct regulator_dev *rdev)
-- 
1.7.5.4



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