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Message-Id: <1402226789-25928-2-git-send-email-shc_work@mail.ru> Date: Sun, 8 Jun 2014 15:26:29 +0400 From: Alexander Shiyan <shc_work@...l.ru> To: linux-kernel@...r.kernel.org Cc: Liam Girdwood <lgirdwood@...il.com>, Mark Brown <broonie@...nel.org>, Alexander Shiyan <shc_work@...l.ru> Subject: [PATCH 2/2] 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@...l.ru> --- drivers/regulator/mc13xxx-regulator-core.c | 37 +++++++----------------------- 1 file changed, 8 insertions(+), 29 deletions(-) diff --git a/drivers/regulator/mc13xxx-regulator-core.c b/drivers/regulator/mc13xxx-regulator-core.c index 05b9717..afba024 100644 --- a/drivers/regulator/mc13xxx-regulator-core.c +++ b/drivers/regulator/mc13xxx-regulator-core.c @@ -33,17 +33,12 @@ 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) @@ -51,16 +46,11 @@ 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; -- 1.8.5.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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