Commit 9efdd276 authored by Matthias Kaehlcke's avatar Matthias Kaehlcke Committed by Mark Brown
Browse files

regulator: Add devm_regulator_get_exclusive() 



Add a resource managed regulator_get_exclusive()

Signed-off-by: default avatarMatthias Kaehlcke <matthias@kaehlcke.net>
Signed-off-by: default avatarMark Brown <broonie@linaro.org>
parent 9e059bac

drivers/regulator/core.c

+30 −0
Original line number Diff line number Diff line
@@ -1493,6 +1493,36 @@ static void _regulator_put(struct regulator *regulator) 
	module_put(rdev->owner);

}



/**

 * devm_regulator_get_exclusive - Resource managed regulator_get_exclusive()

 * @dev: device for regulator "consumer"

 * @id: Supply name or regulator ID.

 *

 * Managed regulator_get_exclusive(). Regulators returned from this function

 * are automatically regulator_put() on driver detach. See regulator_get() for

 * more information.

 */

struct regulator *devm_regulator_get_exclusive(struct device *dev,

					       const char *id)

{

	struct regulator **ptr, *regulator;



	ptr = devres_alloc(devm_regulator_release, sizeof(*ptr), GFP_KERNEL);

	if (!ptr)

		return ERR_PTR(-ENOMEM);



	regulator = _regulator_get(dev, id, 1);

	if (!IS_ERR(regulator)) {

		*ptr = regulator;

		devres_add(dev, ptr);

	} else {

		devres_free(ptr);

	}



	return regulator;

}

EXPORT_SYMBOL_GPL(devm_regulator_get_exclusive);



/**

 * regulator_put - "free" the regulator source

 * @regulator: regulator source

include/linux/regulator/consumer.h

+2 −0
Original line number Diff line number Diff line
@@ -137,6 +137,8 @@ struct regulator *__must_check devm_regulator_get(struct device *dev, 
					     const char *id);

struct regulator *__must_check regulator_get_exclusive(struct device *dev,

						       const char *id);

struct regulator *__must_check devm_regulator_get_exclusive(struct device *dev,

							const char *id);

struct regulator *__must_check regulator_get_optional(struct device *dev,

						      const char *id);

struct regulator *__must_check devm_regulator_get_optional(struct device *dev,