regulator: core: Refactor regulator_list_voltage()

Change _regulator_list_voltage() argument from regulator to
regulator_dev in order to provide better separation of core layers.
Allow calling _regulator_list_voltage() from functions, with
regulator_dev argument. This refactoring is needed in order to
implement setting voltage of coupled regulators.

Signed-off-by: Maciej Purski <m.purski@samsung.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index 5f7678292cefdb30d0ea75491e83c55ad699ec27..fd8eacfea422930b0cc74be3b7f405409b66b087 100644 (file)
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -2447,10 +2447,9 @@ static int _regulator_is_enabled(struct regulator_dev *rdev)
        return rdev->desc->ops->is_enabled(rdev);
 }
 
-static int _regulator_list_voltage(struct regulator *regulator,
-                                   unsigned selector, int lock)
+static int _regulator_list_voltage(struct regulator_dev *rdev,
+                                  unsigned selector, int lock)
 {
-       struct regulator_dev *rdev = regulator->rdev;
        const struct regulator_ops *ops = rdev->desc->ops;
        int ret;
 
@@ -2466,7 +2465,8 @@ static int _regulator_list_voltage(struct regulator *regulator,
                if (lock)
                        mutex_unlock(&rdev->mutex);
        } else if (rdev->is_switch && rdev->supply) {
-               ret = _regulator_list_voltage(rdev->supply, selector, lock);
+               ret = _regulator_list_voltage(rdev->supply->rdev,
+                                             selector, lock);
        } else {
                return -EINVAL;
        }
@@ -2542,7 +2542,7 @@ EXPORT_SYMBOL_GPL(regulator_count_voltages);
  */
 int regulator_list_voltage(struct regulator *regulator, unsigned selector)
 {
-       return _regulator_list_voltage(regulator, selector, 1);
+       return _regulator_list_voltage(regulator->rdev, selector, 1);
 }
 EXPORT_SYMBOL_GPL(regulator_list_voltage);