From: Urs Fässler <redacted>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit da019f59cb16570e78feaf10380ac65a3a06861e upstream.

When not using the "_optional" function, a dummy regulator is returned
and the driver fails to initialize.

Signed-off-by: Urs Fässler <redacted>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Jiri Slaby <redacted>
---
 drivers/iio/dac/ad5686.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iio/dac/ad5686.c b/drivers/iio/dac/ad5686.c
index 57825ead7db2..7248147fbf2b 100644
--- a/drivers/iio/dac/ad5686.c
+++ b/drivers/iio/dac/ad5686.c

@@ -321,7 +321,7 @@ static int ad5686_probe(struct spi_device *spi)
 	st = iio_priv(indio_dev);
 	spi_set_drvdata(spi, indio_dev);
 
-	st->reg = devm_regulator_get(&spi->dev, "vcc");
+	st->reg = devm_regulator_get_optional(&spi->dev, "vcc");
 	if (!IS_ERR(st->reg)) {
 		ret = regulator_enable(st->reg);
 		if (ret)

-- 
2.3.0