regulator: Add REGULATOR_STATUS_UNDEFINED.

REGULATOR_STATUS_UNDEFINED is to be returned by regulator, if any other state
doesn't really apply.

Signed-off-by: Krystian Garbaciak <krystian.garbaciak@diasemi.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

2 files changed, 6 insertions, 1 deletions

diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index 4b136f8cb99f..01a67c50c4ea 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -393,6 +393,9 @@ static ssize_t regulator_status_show(struct device *dev,
         case REGULATOR_STATUS_STANDBY:
                 label = "standby";
                 break;
+        case REGULATOR_STATUS_UNDEFINED:
+                label = "undefined";
+                break;
         default:
                 return -ERANGE;
         }
@@ -2897,7 +2900,7 @@ int regulator_mode_to_status(unsigned int mode)
         case REGULATOR_MODE_STANDBY:
                 return REGULATOR_STATUS_STANDBY;
         default:
-                return 0;
+                return REGULATOR_STATUS_UNDEFINED;
         }
 }
 EXPORT_SYMBOL_GPL(regulator_mode_to_status);
diff --git a/include/linux/regulator/driver.h b/include/linux/regulator/driver.h
index 80226383e561..2513a54ca2e8 100644
--- a/include/linux/regulator/driver.h
+++ b/include/linux/regulator/driver.h
@@ -32,6 +32,8 @@ enum regulator_status {
         REGULATOR_STATUS_NORMAL,
         REGULATOR_STATUS_IDLE,
         REGULATOR_STATUS_STANDBY,
+        /* in case that any other status doesn't apply */
+        REGULATOR_STATUS_UNDEFINED,
 };
 
 /**