1 files changed, 13 insertions, 6 deletions

diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index 01f7702a805..98c3a74e994 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -540,8 +540,8 @@ static void drms_uA_update(struct regulator_dev *rdev)
 
         err = regulator_check_drms(rdev);
         if (err < 0 || !rdev->desc->ops->get_optimum_mode ||
-            !rdev->desc->ops->get_voltage || !rdev->desc->ops->set_mode);
-        return;
+            !rdev->desc->ops->get_voltage || !rdev->desc->ops->set_mode)
+                return;
 
         /* get output voltage */
         output_uV = rdev->desc->ops->get_voltage(rdev);
@@ -703,10 +703,13 @@ static int set_machine_constraints(struct regulator_dev *rdev,
                 int     cmin = constraints->min_uV;
                 int     cmax = constraints->max_uV;
 
-                /* it's safe to autoconfigure fixed-voltage supplies */
+                /* it's safe to autoconfigure fixed-voltage supplies
+                   and the constraints are used by list_voltage. */
                 if (count == 1 && !cmin) {
-                        cmin = INT_MIN;
+                        cmin = 1;
                         cmax = INT_MAX;
+                        constraints->min_uV = cmin;
+                        constraints->max_uV = cmax;
                 }
 
                 /* voltage constraints are optional */
@@ -2001,8 +2004,8 @@ struct regulator_dev *regulator_register(struct regulator_desc *regulator_desc,
         if (regulator_desc->name == NULL || regulator_desc->ops == NULL)
                 return ERR_PTR(-EINVAL);
 
-        if (!regulator_desc->type == REGULATOR_VOLTAGE &&
-            !regulator_desc->type == REGULATOR_CURRENT)
+        if (regulator_desc->type != REGULATOR_VOLTAGE &&
+            regulator_desc->type != REGULATOR_CURRENT)
                 return ERR_PTR(-EINVAL);
 
         if (!init_data)
@@ -2080,6 +2083,10 @@ out:
 
 scrub:
         device_unregister(&rdev->dev);
+        /* device core frees rdev */
+        rdev = ERR_PTR(ret);
+        goto out;
+
 clean:
         kfree(rdev);
         rdev = ERR_PTR(ret);