regulator fixed: Do not report enumaratable voltages if there are none

If used as a dummy voltage provider the fixed regulator should
not set n_voltages to make the core accept the device.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/regulator/fixed.c b/drivers/regulator/fixed.c
index e24e3a174c4b..40f38030b394 100644
--- a/drivers/regulator/fixed.c
+++ b/drivers/regulator/fixed.c
@@ -192,7 +192,9 @@ static int __devinit reg_fixed_voltage_probe(struct platform_device *pdev)
         drvdata->desc.type = REGULATOR_VOLTAGE;
         drvdata->desc.owner = THIS_MODULE;
         drvdata->desc.ops = &fixed_voltage_ops;
-        drvdata->desc.n_voltages = 1;
+
+        if (config->microvolts)
+                drvdata->desc.n_voltages = 1;
 
         drvdata->microvolts = config->microvolts;
         drvdata->gpio = config->gpio;