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regulator: Enable supply regulator if child rail is enabled. 

During regulator_register, the rail is set on the provided
machine constraints and if it is enabled then it is also
require to enable the supply regulator. This will make sure
that:
   1. Proper reference count for supply regulator to be maintain.
   2. Supply regulator should be enable when given rail is enabled.

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Laxman Dewangan 2012-01-02 13:08:45 +05:30 committed by Mark Brown
parent 4fef21eaac
commit b2296bd43e
1 changed files with 8 additions and 0 deletions
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8
drivers/regulator/core.c
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@ -2802,6 +2802,14 @@ struct regulator_dev *regulator_register(struct regulator_desc *regulator_desc,
ret = set_supply(rdev, r);
if (ret < 0)
goto scrub;
/* Enable supply if rail is enabled */
if (rdev->desc->ops->is_enabled &&
rdev->desc->ops->is_enabled(rdev)) {
ret = regulator_enable(rdev->supply);
if (ret < 0)
goto scrub;
}
}
/* add consumers devices */