1 files changed, 9 insertions, 2 deletions

diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index f59821f10fdc..3700d0953d73 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -151,8 +151,11 @@ static int regulator_check_voltage(struct regulator_dev *rdev,
         if (*min_uV < rdev->constraints->min_uV)
                 *min_uV = rdev->constraints->min_uV;
 
-        if (*min_uV > *max_uV)
+        if (*min_uV > *max_uV) {
+                rdev_err(rdev, "unsupportable voltage range: %d-%duV\n",
+                         min_uV, max_uV);
                 return -EINVAL;
+        }
 
         return 0;
 }
@@ -205,8 +208,11 @@ static int regulator_check_current_limit(struct regulator_dev *rdev,
         if (*min_uA < rdev->constraints->min_uA)
                 *min_uA = rdev->constraints->min_uA;
 
-        if (*min_uA > *max_uA)
+        if (*min_uA > *max_uA) {
+                rdev_err(rdev, "unsupportable current range: %d-%duA\n",
+                         min_uA, max_uA);
                 return -EINVAL;
+        }
 
         return 0;
 }
@@ -221,6 +227,7 @@ static int regulator_mode_constrain(struct regulator_dev *rdev, int *mode)
         case REGULATOR_MODE_STANDBY:
                 break;
         default:
+                rdev_err(rdev, "invalid mode %x specified\n", *mode);
                 return -EINVAL;
         }