aboutsummaryrefslogtreecommitdiff
path: root/drivers
diff options
context:
space:
mode:
authorMark Brown <broonie@opensource.wolfsonmicro.com>2009-08-03 18:49:56 +0100
committerLiam Girdwood <lrg@slimlogic.co.uk>2009-09-22 13:32:40 +0100
commit9332546fe88fa88bf6a7d9b1dce53ff5d314934e (patch)
tree494440be4b76ad3dadd71fd426fd2a58d59c8726 /drivers
parentf25e0b4fcc38d120e704c377791158c4b2a54daa (diff)
downloadlinaro-lsk-9332546fe88fa88bf6a7d9b1dce53ff5d314934e.tar.gz
regulator: Push locking for regulator_is_enabled() out
Allows use by more of the internal regulator API code. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/regulator/core.c30
1 files changed, 16 insertions, 14 deletions
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index dfbf4312ec3..60fcd986ff3 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -280,8 +280,13 @@ static ssize_t regulator_state_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct regulator_dev *rdev = dev_get_drvdata(dev);
+ ssize_t ret;
+
+ mutex_lock(&rdev->mutex);
+ ret = regulator_print_state(buf, _regulator_is_enabled(rdev));
+ mutex_unlock(&rdev->mutex);
- return regulator_print_state(buf, _regulator_is_enabled(rdev));
+ return ret;
}
static DEVICE_ATTR(state, 0444, regulator_state_show, NULL);
@@ -1365,20 +1370,11 @@ EXPORT_SYMBOL_GPL(regulator_force_disable);
static int _regulator_is_enabled(struct regulator_dev *rdev)
{
- int ret;
-
- mutex_lock(&rdev->mutex);
-
/* sanity check */
- if (!rdev->desc->ops->is_enabled) {
- ret = -EINVAL;
- goto out;
- }
+ if (!rdev->desc->ops->is_enabled)
+ return -EINVAL;
- ret = rdev->desc->ops->is_enabled(rdev);
-out:
- mutex_unlock(&rdev->mutex);
- return ret;
+ return rdev->desc->ops->is_enabled(rdev);
}
/**
@@ -1395,7 +1391,13 @@ out:
*/
int regulator_is_enabled(struct regulator *regulator)
{
- return _regulator_is_enabled(regulator->rdev);
+ int ret;
+
+ mutex_lock(&regulator->rdev->mutex);
+ ret = _regulator_is_enabled(regulator->rdev);
+ mutex_unlock(&regulator->rdev->mutex);
+
+ return ret;
}
EXPORT_SYMBOL_GPL(regulator_is_enabled);