regulator: mc13xxx: Remove unnecessary locks

Read-modify-write sequence is already protected by regmap, so no
additional locks need. This patch remove such locks from mc13xxx
regulator driver.

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Mark Brown <broonie@linaro.org>

drivers/regulator/mc13xxx-regulator-core.c

@@ -33,34 +33,24 @@ static int mc13xxx_regulator_enable(struct regulator_dev *rdev)
 	struct mc13xxx_regulator_priv *priv = rdev_get_drvdata(rdev);
 	struct mc13xxx_regulator *mc13xxx_regulators = priv->mc13xxx_regulators;
 	int id = rdev_get_id(rdev);
-	int ret;
 
 	dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id);
 
-	mc13xxx_lock(priv->mc13xxx);
-	ret = mc13xxx_reg_rmw(priv->mc13xxx, mc13xxx_regulators[id].reg,
-			mc13xxx_regulators[id].enable_bit,
-			mc13xxx_regulators[id].enable_bit);
-	mc13xxx_unlock(priv->mc13xxx);
-
-	return ret;
+	return mc13xxx_reg_rmw(priv->mc13xxx, mc13xxx_regulators[id].reg,
+			       mc13xxx_regulators[id].enable_bit,
+			       mc13xxx_regulators[id].enable_bit);
 }
 
 static int mc13xxx_regulator_disable(struct regulator_dev *rdev)
 {
 	struct mc13xxx_regulator_priv *priv = rdev_get_drvdata(rdev);
 	struct mc13xxx_regulator *mc13xxx_regulators = priv->mc13xxx_regulators;
 	int id = rdev_get_id(rdev);
-	int ret;
 
 	dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id);
 
-	mc13xxx_lock(priv->mc13xxx);
-	ret = mc13xxx_reg_rmw(priv->mc13xxx, mc13xxx_regulators[id].reg,
-			mc13xxx_regulators[id].enable_bit, 0);
-	mc13xxx_unlock(priv->mc13xxx);
-
-	return ret;
+	return mc13xxx_reg_rmw(priv->mc13xxx, mc13xxx_regulators[id].reg,
+			       mc13xxx_regulators[id].enable_bit, 0);
 }
 
 static int mc13xxx_regulator_is_enabled(struct regulator_dev *rdev)
@@ -70,10 +60,7 @@ static int mc13xxx_regulator_is_enabled(struct regulator_dev *rdev)
 	int ret, id = rdev_get_id(rdev);
 	unsigned int val;
 
-	mc13xxx_lock(priv->mc13xxx);
 	ret = mc13xxx_reg_read(priv->mc13xxx, mc13xxx_regulators[id].reg, &val);
-	mc13xxx_unlock(priv->mc13xxx);
-
 	if (ret)
 		return ret;
 
@@ -86,15 +73,10 @@ static int mc13xxx_regulator_set_voltage_sel(struct regulator_dev *rdev,
 	struct mc13xxx_regulator_priv *priv = rdev_get_drvdata(rdev);
 	struct mc13xxx_regulator *mc13xxx_regulators = priv->mc13xxx_regulators;
 	int id = rdev_get_id(rdev);
-	int ret;
 
-	mc13xxx_lock(priv->mc13xxx);
-	ret = mc13xxx_reg_rmw(priv->mc13xxx, mc13xxx_regulators[id].vsel_reg,
-			mc13xxx_regulators[id].vsel_mask,
-			selector << mc13xxx_regulators[id].vsel_shift);
-	mc13xxx_unlock(priv->mc13xxx);
-
-	return ret;
+	return mc13xxx_reg_rmw(priv->mc13xxx, mc13xxx_regulators[id].vsel_reg,
+			       mc13xxx_regulators[id].vsel_mask,
+			       selector << mc13xxx_regulators[id].vsel_shift);
 }
 
 static int mc13xxx_regulator_get_voltage(struct regulator_dev *rdev)
@@ -106,11 +88,8 @@ static int mc13xxx_regulator_get_voltage(struct regulator_dev *rdev)
 
 	dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id);
 
-	mc13xxx_lock(priv->mc13xxx);
 	ret = mc13xxx_reg_read(priv->mc13xxx,
 				mc13xxx_regulators[id].vsel_reg, &val);
-	mc13xxx_unlock(priv->mc13xxx);
-
 	if (ret)
 		return ret;