Merge remote-tracking branch 'regmap/fix/debugfs' into tmp

[karo-tx-linux.git] / drivers / regulator / core.c

diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index 0f65b246cc0c8d24c559cdeafd340232d1c55e0c..278584302f2d162c56599ad61a62ade3cdcceadd 100644 (file)
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -1885,9 +1885,15 @@ int regulator_can_change_voltage(struct regulator *regulator)
        struct regulator_dev    *rdev = regulator->rdev;
 
        if (rdev->constraints &&
-           rdev->constraints->valid_ops_mask & REGULATOR_CHANGE_VOLTAGE &&
-           (rdev->desc->n_voltages - rdev->desc->linear_min_sel) > 1)
-               return 1;
+           (rdev->constraints->valid_ops_mask & REGULATOR_CHANGE_VOLTAGE)) {
+               if (rdev->desc->n_voltages - rdev->desc->linear_min_sel > 1)
+                       return 1;
+
+               if (rdev->desc->continuous_voltage_range &&
+                   rdev->constraints->min_uV && rdev->constraints->max_uV &&
+                   rdev->constraints->min_uV != rdev->constraints->max_uV)
+                       return 1;
+       }
 
        return 0;
 }
@@ -3315,7 +3321,8 @@ static void rdev_init_debugfs(struct regulator_dev *rdev)
  * @config: runtime configuration for regulator
  *
  * Called by regulator drivers to register a regulator.
- * Returns 0 on success.
+ * Returns a valid pointer to struct regulator_dev on success
+ * or an ERR_PTR() on error.
  */
 struct regulator_dev *
 regulator_register(const struct regulator_desc *regulator_desc,