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regulator: core: Reduce rdev locking region when releasing regulator 

When we release a regulator we need to remove references to it from the
rdev which means locking the rdev.  Currently we also free resources
associated with the regulator inside the rdev lock but there is no need
to do this, we can reduce the region the lock is held by restricting it
to just actions that affect the rdev.

Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Mark Brown 2015-08-07 21:19:26 +01:00
parent 7cd71c3ba1
commit 1768514eeb
1 changed files with 3 additions and 2 deletions
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5
drivers/regulator/core.c
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@ -1601,14 +1601,15 @@ static void _regulator_put(struct regulator *regulator)
if (regulator->dev)
sysfs_remove_link(&rdev->dev.kobj, regulator->supply_name);
mutex_lock(&rdev->mutex);
kfree(regulator->supply_name);
list_del(&regulator->list);
kfree(regulator);
rdev->open_count--;
rdev->exclusive = 0;
mutex_unlock(&rdev->mutex);
kfree(regulator->supply_name);
kfree(regulator);
module_put(rdev->owner);
}