diff options
Diffstat (limited to 'drivers/regulator/core.c')
| -rw-r--r-- | drivers/regulator/core.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c index afca1bc24f2..9a09f3cdbab 100644 --- a/drivers/regulator/core.c +++ b/drivers/regulator/core.c @@ -2138,7 +2138,7 @@ EXPORT_SYMBOL_GPL(regulator_is_enabled); * @regulator: regulator source * * Returns positive if the regulator driver backing the source/client - * can change its voltage, false otherwise. Usefull for detecting fixed + * can change its voltage, false otherwise. Useful for detecting fixed * or dummy regulators and disabling voltage change logic in the client * driver. */ @@ -2399,6 +2399,7 @@ int regulator_set_voltage(struct regulator *regulator, int min_uV, int max_uV) struct regulator_dev *rdev = regulator->rdev; int ret = 0; int old_min_uV, old_max_uV; + int current_uV; mutex_lock(&rdev->mutex); @@ -2409,6 +2410,19 @@ int regulator_set_voltage(struct regulator *regulator, int min_uV, int max_uV) if (regulator->min_uV == min_uV && regulator->max_uV == max_uV) goto out; + /* If we're trying to set a range that overlaps the current voltage, + * return succesfully even though the regulator does not support + * changing the voltage. + */ + if (!(rdev->constraints->valid_ops_mask & REGULATOR_CHANGE_VOLTAGE)) { + current_uV = _regulator_get_voltage(rdev); + if (min_uV <= current_uV && current_uV <= max_uV) { + regulator->min_uV = min_uV; + regulator->max_uV = max_uV; + goto out; + } + } + /* sanity check */ if (!rdev->desc->ops->set_voltage && !rdev->desc->ops->set_voltage_sel) { |