[PATCH] regulator: Don't report zero volts for the fixed voltage regulator

[Mark Brown]

If we don't know what voltage the regulator is set to return an error
rather than reporting zero volts.

Signed-off-by: Mark Brown <broonie@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
---
 drivers/regulator/fixed.c |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)

diff --git a/drivers/regulator/fixed.c b/drivers/regulator/fixed.c
index 21ecf21..ccbead0 100644
--- a/drivers/regulator/fixed.c
+++ b/drivers/regulator/fixed.c
@@ -80,7 +80,10 @@ static int fixed_voltage_get_voltage(struct regulator_dev *dev)
 {
 	struct fixed_voltage_data *data = rdev_get_drvdata(dev);
 
-	return data->microvolts;
+	if (data->microvolts)
+		return data->microvolts;
+	else
+		return -EINVAL;
 }
 
 static int fixed_voltage_list_voltage(struct regulator_dev *dev,
-- 
1.7.7.1

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