power: regulator: Add limits checking while setting voltage

[platform/kernel/u-boot.git] / drivers / power / regulator / regulator-uclass.c

diff --git a/drivers/power/regulator/regulator-uclass.c b/drivers/power/regulator/regulator-uclass.c
index d644009..e48d213 100644 (file)
--- a/drivers/power/regulator/regulator-uclass.c
+++ b/drivers/power/regulator/regulator-uclass.c
@@ -41,6 +41,13 @@ int regulator_get_value(struct udevice *dev)
 int regulator_set_value(struct udevice *dev, int uV)
 {
        const struct dm_regulator_ops *ops = dev_get_driver_ops(dev);
+       struct dm_regulator_uclass_platdata *uc_pdata;
+
+       uc_pdata = dev_get_uclass_platdata(dev);
+       if (uc_pdata->min_uV != -ENODATA && uV < uc_pdata->min_uV)
+               return -EINVAL;
+       if (uc_pdata->max_uV != -ENODATA && uV > uc_pdata->max_uV)
+               return -EINVAL;
 
        if (!ops || !ops->set_value)
                return -ENOSYS;