best_val = rdev->desc->ops->list_voltage(rdev, ret);
if (min_uV <= best_val && max_uV >= best_val) {
selector = ret;
- ret = rdev->desc->ops->set_voltage_sel(rdev,
- ret);
+ if (old_selector == selector)
+ ret = 0;
+ else
+ ret = rdev->desc->ops->set_voltage_sel(
+ rdev, ret);
} else {
ret = -EINVAL;
}
/* Call set_voltage_time_sel if successfully obtained old_selector */
if (ret == 0 && _regulator_is_enabled(rdev) && old_selector >= 0 &&
- rdev->desc->ops->set_voltage_time_sel) {
+ old_selector != selector && rdev->desc->ops->set_voltage_time_sel) {
delay = rdev->desc->ops->set_voltage_time_sel(rdev,
old_selector, selector);
{
struct regulator_dev *rdev = regulator->rdev;
int ret = 0;
+ int old_min_uV, old_max_uV;
mutex_lock(&rdev->mutex);
ret = regulator_check_voltage(rdev, &min_uV, &max_uV);
if (ret < 0)
goto out;
+
+ /* restore original values in case of error */
+ old_min_uV = regulator->min_uV;
+ old_max_uV = regulator->max_uV;
regulator->min_uV = min_uV;
regulator->max_uV = max_uV;
ret = regulator_check_consumers(rdev, &min_uV, &max_uV);
if (ret < 0)
- goto out;
+ goto out2;
ret = _regulator_do_set_voltage(rdev, min_uV, max_uV);
-
+ if (ret < 0)
+ goto out2;
+
out:
mutex_unlock(&rdev->mutex);
return ret;
+out2:
+ regulator->min_uV = old_min_uV;
+ regulator->max_uV = old_max_uV;
+ mutex_unlock(&rdev->mutex);
+ return ret;
}
EXPORT_SYMBOL_GPL(regulator_set_voltage);