regulator: Add devm_regulator_get()

Add a resource managed regulator_get() to simplify regulator
usage in drivers. This allows driver authors to "get and forget"
about their regulators by automatically calling regulator_put()
when the driver is detached.

[Fixed up a couple of coding style issues -- broonie]

Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

1 files changed, 9 insertions, 0 deletions

diff --git a/include/linux/regulator/consumer.h b/include/linux/regulator/consumer.h
index f2698a0edfc..bcfe1065876 100644
--- a/include/linux/regulator/consumer.h
+++ b/include/linux/regulator/consumer.h
@@ -132,6 +132,8 @@ struct regulator_bulk_data {
 /* regulator get and put */
 struct regulator *__must_check regulator_get(struct device *dev,
                                              const char *id);
+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);
 void regulator_put(struct regulator *regulator);
@@ -200,6 +202,13 @@ static inline struct regulator *__must_check regulator_get(struct device *dev,
          */
         return NULL;
 }
+
+static inline struct regulator *__must_check
+devm_regulator_get(struct device *dev, const char *id)
+{
+        return NULL;
+}
+
 static inline void regulator_put(struct regulator *regulator)
 {
 }