regulator: core: Add devres versions of notifier registration

Add devm_regulator_register_notifier, this adds the resource against the
device for the consumer supply we are registering the notifier for. There
seem to be few use-cases where this wouldn't be the users intention and
this ensures the notifiers will always be removed at the correct time.

Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

1 files changed, 16 insertions, 0 deletions

diff --git a/include/linux/regulator/consumer.h b/include/linux/regulator/consumer.h
index d17e1ff7ad01..bd631ee5f1da 100644
--- a/include/linux/regulator/consumer.h
+++ b/include/linux/regulator/consumer.h
@@ -252,8 +252,12 @@ int regulator_list_hardware_vsel(struct regulator *regulator,
 /* regulator notifier block */
 int regulator_register_notifier(struct regulator *regulator,
                               struct notifier_block *nb);
+int devm_regulator_register_notifier(struct regulator *regulator,
+                                     struct notifier_block *nb);
 int regulator_unregister_notifier(struct regulator *regulator,
                                 struct notifier_block *nb);
+void devm_regulator_unregister_notifier(struct regulator *regulator,
+                                        struct notifier_block *nb);
 
 /* driver data - core doesn't touch */
 void *regulator_get_drvdata(struct regulator *regulator);
@@ -515,12 +519,24 @@ static inline int regulator_register_notifier(struct regulator *regulator,
         return 0;
 }
 
+static inline int devm_regulator_register_notifier(struct regulator *regulator,
+                                                   struct notifier_block *nb)
+{
+        return 0;
+}
+
 static inline int regulator_unregister_notifier(struct regulator *regulator,
                                 struct notifier_block *nb)
 {
         return 0;
 }
 
+static inline int devm_regulator_unregister_notifier(struct regulator *regulator,
+                                                     struct notifier_block *nb)
+{
+        return 0;
+}
+
 static inline void *regulator_get_drvdata(struct regulator *regulator)
 {
         return NULL;