linux-kernel - [PATCH 3.12 104/175] iio: ad5686: fix optional reference voltage declaration

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Message-Id: <182830fede67ba3d9f6d52f68dca839bb2118b32.1426581621.git.jslaby@suse.cz>
Date:	Tue, 17 Mar 2015 09:41:22 +0100
From:	Jiri Slaby <jslaby@...e.cz>
To:	stable@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org,
	Urs Fässler <urs.fassler@...esatwork.ch>,
	Jonathan Cameron <jic23@...nel.org>,
	Jiri Slaby <jslaby@...e.cz>
Subject: [PATCH 3.12 104/175] iio: ad5686: fix optional reference voltage declaration

From: Urs Fässler <urs.fassler@...esatwork.ch>

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 <urs.fassler@...esatwork.ch>
Acked-by: Lars-Peter Clausen <lars@...afoo.de>
Signed-off-by: Jonathan Cameron <jic23@...nel.org>
Signed-off-by: Jiri Slaby <jslaby@...e.cz>
---
 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

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