regulator: Copy constraints from regulators when initialising them

Currently the regulator API uses the constraints structure passed in to
the core throughout the lifetime of the object. This means that it is not
possible to mark the constraints as __initdata so if the kernel supports
many boards the constraints for all of them are kept around throughout the
lifetime of the system, consuming memory needlessly. By copying constraints
that are actually used we allow the use of __initdata, saving memory when
multiple boards are supported.

This also means the constraints can be const.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>

1 files changed, 1 insertions, 1 deletions

diff --git a/include/linux/regulator/driver.h b/include/linux/regulator/driver.h
index 4275cd475eac..cce575359712 100644
--- a/include/linux/regulator/driver.h
+++ b/include/linux/regulator/driver.h
@@ -192,7 +192,7 @@ struct regulator_dev {
 };
 
 struct regulator_dev *regulator_register(struct regulator_desc *regulator_desc,
-        struct device *dev, struct regulator_init_data *init_data,
+        struct device *dev, const struct regulator_init_data *init_data,
         void *driver_data);
 void regulator_unregister(struct regulator_dev *rdev);