linux-kernel - [PATCH 4/4] regulator: ab8500-ext: Remove get_voltage to avoid duplicate implementation

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Date:	Sun, 07 Apr 2013 23:17:50 +0800
From:	Axel Lin <axel.lin@...ics.com>
To:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
Cc:	Bengt Jonsson <bengt.g.jonsson@...ricsson.com>,
	Lee Jones <lee.jones@...aro.org>,
	Yvan FILLION <yvan.fillion@...ricsson.com>,
	Liam Girdwood <lgirdwood@...il.com>,
	linux-kernel@...r.kernel.org
Subject: [PATCH 4/4] regulator: ab8500-ext: Remove get_voltage to avoid
 duplicate implementation

The implementation of ab8500_ext_fixed_get_voltage is identical to
ab8500_ext_list_voltage. We can avoid the duplicate implementation by just
remove get_voltage. For fixed regulator, regulator core will call
list_voltage(rdev, 0) to get voltage if both get_voltage get_voltage_sel are
not implemented.

Signed-off-by: Axel Lin <axel.lin@...ics.com>
---
 drivers/regulator/ab8500-ext.c |   16 ----------------
 1 file changed, 16 deletions(-)

diff --git a/drivers/regulator/ab8500-ext.c b/drivers/regulator/ab8500-ext.c
index c7896af..9aee21c 100644
--- a/drivers/regulator/ab8500-ext.c
+++ b/drivers/regulator/ab8500-ext.c
@@ -237,21 +237,6 @@ static unsigned int ab8500_ext_regulator_get_mode(struct regulator_dev *rdev)
 	return ret;
 }
 
-static int ab8500_ext_fixed_get_voltage(struct regulator_dev *rdev)
-{
-	struct regulation_constraints *regu_constraints = rdev->constraints;
-
-	if (regu_constraints == NULL) {
-		dev_err(rdev_get_dev(rdev), "regulator constraints null pointer\n");
-		return -EINVAL;
-	}
-	if (regu_constraints->min_uV && regu_constraints->max_uV) {
-		if (regu_constraints->min_uV == regu_constraints->max_uV)
-			return regu_constraints->min_uV;
-	}
-	return -EINVAL;
-}
-
 static int ab8500_ext_list_voltage(struct regulator_dev *rdev,
 				   unsigned selector)
 {
@@ -275,7 +260,6 @@ static struct regulator_ops ab8500_ext_regulator_ops = {
 	.is_enabled		= ab8500_ext_regulator_is_enabled,
 	.set_mode		= ab8500_ext_regulator_set_mode,
 	.get_mode		= ab8500_ext_regulator_get_mode,
-	.get_voltage		= ab8500_ext_fixed_get_voltage,
 	.list_voltage		= ab8500_ext_list_voltage,
 };
 
-- 
1.7.10.4



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