Merge remote-tracking branch 'regulator/fix/core' into tmp

1 files changed, 11 insertions, 4 deletions

diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index 0f65b246cc0..278584302f2 100644
--- 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,