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authorAxel Lin <axel.lin@gmail.com>2012-07-19 11:17:15 +0800
committerMark Brown <broonie@opensource.wolfsonmicro.com>2012-08-28 11:00:23 -0700
commit825d105910d549e69748b19f83031b231152ac9d (patch)
tree27707d5f371df4f925c1bd16fb257fdc513376d4 /drivers
parent2a2c3ac0a584246cf9fdab69941b8aad54749581 (diff)
regulator: mc13892: Make mc13892_powermisc_rmw() lock protected
Then we can remove lock/unlock around the caller. Signed-off-by: Axel Lin <axel.lin@gmail.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/regulator/mc13892-regulator.c22
1 files changed, 8 insertions, 14 deletions
diff --git a/drivers/regulator/mc13892-regulator.c b/drivers/regulator/mc13892-regulator.c
index b388b746452e..9d4296b96adb 100644
--- a/drivers/regulator/mc13892-regulator.c
+++ b/drivers/regulator/mc13892-regulator.c
@@ -305,9 +305,10 @@ static int mc13892_powermisc_rmw(struct mc13xxx_regulator_priv *priv, u32 mask,
BUG_ON(val & ~mask);
+ mc13xxx_lock(priv->mc13xxx);
ret = mc13xxx_reg_read(mc13892, MC13892_POWERMISC, &valread);
if (ret)
- return ret;
+ goto out;
/* Update the stored state for Power Gates. */
priv->powermisc_pwgt_state =
@@ -320,14 +321,16 @@ static int mc13892_powermisc_rmw(struct mc13xxx_regulator_priv *priv, u32 mask,
valread = (valread & ~MC13892_POWERMISC_PWGTSPI_M) |
priv->powermisc_pwgt_state;
- return mc13xxx_reg_write(mc13892, MC13892_POWERMISC, valread);
+ ret = mc13xxx_reg_write(mc13892, MC13892_POWERMISC, valread);
+out:
+ mc13xxx_unlock(priv->mc13xxx);
+ return ret;
}
static int mc13892_gpo_regulator_enable(struct regulator_dev *rdev)
{
struct mc13xxx_regulator_priv *priv = rdev_get_drvdata(rdev);
int id = rdev_get_id(rdev);
- int ret;
u32 en_val = mc13892_regulators[id].enable_bit;
u32 mask = mc13892_regulators[id].enable_bit;
@@ -340,18 +343,13 @@ static int mc13892_gpo_regulator_enable(struct regulator_dev *rdev)
if (id == MC13892_GPO4)
mask |= MC13892_POWERMISC_GPO4ADINEN;
- mc13xxx_lock(priv->mc13xxx);
- ret = mc13892_powermisc_rmw(priv, mask, en_val);
- mc13xxx_unlock(priv->mc13xxx);
-
- return ret;
+ return mc13892_powermisc_rmw(priv, mask, en_val);
}
static int mc13892_gpo_regulator_disable(struct regulator_dev *rdev)
{
struct mc13xxx_regulator_priv *priv = rdev_get_drvdata(rdev);
int id = rdev_get_id(rdev);
- int ret;
u32 dis_val = 0;
dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id);
@@ -360,12 +358,8 @@ static int mc13892_gpo_regulator_disable(struct regulator_dev *rdev)
if (id == MC13892_PWGT1SPI || id == MC13892_PWGT2SPI)
dis_val = mc13892_regulators[id].enable_bit;
- mc13xxx_lock(priv->mc13xxx);
- ret = mc13892_powermisc_rmw(priv, mc13892_regulators[id].enable_bit,
+ return mc13892_powermisc_rmw(priv, mc13892_regulators[id].enable_bit,
dis_val);
- mc13xxx_unlock(priv->mc13xxx);
-
- return ret;
}
static int mc13892_gpo_regulator_is_enabled(struct regulator_dev *rdev)