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Merge remote-tracking branch 'regulator/topic/core' into regulator-next

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This commit is contained in:
Mark Brown 2013-02-19 12:42:32 +00:00
commit 52582adcb9
1 changed files with 22 additions and 7 deletions
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29
drivers/regulator/core.c
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@ -200,8 +200,8 @@ static int regulator_check_consumers(struct regulator_dev *rdev,
} }
if (*min_uV > *max_uV) { if (*min_uV > *max_uV) {
dev_err(regulator->dev, "Restricting voltage, %u-%uuV\n", rdev_err(rdev, "Restricting voltage, %u-%uuV\n",
regulator->min_uV, regulator->max_uV); *min_uV, *max_uV);
return -EINVAL; return -EINVAL;
} }
@ -2239,8 +2239,11 @@ static int _regulator_do_set_voltage(struct regulator_dev *rdev,
best_val = rdev->desc->ops->list_voltage(rdev, ret); best_val = rdev->desc->ops->list_voltage(rdev, ret);
if (min_uV <= best_val && max_uV >= best_val) { if (min_uV <= best_val && max_uV >= best_val) {
selector = ret; selector = ret;
ret = rdev->desc->ops->set_voltage_sel(rdev, if (old_selector == selector)
ret); ret = 0;
else
ret = rdev->desc->ops->set_voltage_sel(
rdev, ret);
} else { } else {
ret = -EINVAL; ret = -EINVAL;
} }
@ -2251,7 +2254,7 @@ static int _regulator_do_set_voltage(struct regulator_dev *rdev,
/* Call set_voltage_time_sel if successfully obtained old_selector */ /* Call set_voltage_time_sel if successfully obtained old_selector */
if (ret == 0 && _regulator_is_enabled(rdev) && old_selector >= 0 && 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, delay = rdev->desc->ops->set_voltage_time_sel(rdev,
old_selector, selector); old_selector, selector);
@ -2304,6 +2307,7 @@ int regulator_set_voltage(struct regulator *regulator, int min_uV, int max_uV)
{ {
struct regulator_dev *rdev = regulator->rdev; struct regulator_dev *rdev = regulator->rdev;
int ret = 0; int ret = 0;
int old_min_uV, old_max_uV;
mutex_lock(&rdev->mutex); mutex_lock(&rdev->mutex);
@ -2325,18 +2329,29 @@ int regulator_set_voltage(struct regulator *regulator, int min_uV, int max_uV)
ret = regulator_check_voltage(rdev, &min_uV, &max_uV); ret = regulator_check_voltage(rdev, &min_uV, &max_uV);
if (ret < 0) if (ret < 0)
goto out; 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->min_uV = min_uV;
regulator->max_uV = max_uV; regulator->max_uV = max_uV;
ret = regulator_check_consumers(rdev, &min_uV, &max_uV); ret = regulator_check_consumers(rdev, &min_uV, &max_uV);
if (ret < 0) if (ret < 0)
goto out; goto out2;
ret = _regulator_do_set_voltage(rdev, min_uV, max_uV); ret = _regulator_do_set_voltage(rdev, min_uV, max_uV);
if (ret < 0)
goto out2;
out: out:
mutex_unlock(&rdev->mutex); mutex_unlock(&rdev->mutex);
return ret; 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); EXPORT_SYMBOL_GPL(regulator_set_voltage);