From: Laxman Dewangan Date: Mon, 2 Jan 2012 07:38:45 +0000 (+0530) Subject: regulator: Enable supply regulator if child rail is enabled. X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=b2296bd43e781976743354c668a356b0df98e1da;p=linux-beck.git 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 Signed-off-by: Mark Brown --- diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c index e70e15c4aa28..eb750a1ed7fe 100644 --- a/drivers/regulator/core.c +++ b/drivers/regulator/core.c @@ -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 */