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authorGuenter Roeck <linux@roeck-us.net>2014-01-27 18:10:00 +0000
committerJonathan Cameron <jic23@kernel.org>2014-02-08 11:46:00 +0000
commit55b40d37311807a6bb2acdae0df904f54a0da3ae (patch)
treeb273b91937b2ecede65e07dc9ceae926c21a3c4e /drivers/iio
parent5585215b6daabf898b4d40f33d1b8c1d41e85018 (diff)
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iio: max1363: Use devm_regulator_get_optional for optional regulator
In kernel version 3.13, devm_regulator_get() may return no error if a regulator is undeclared. regulator_get_voltage() will return -EINVAL if this happens. This causes the driver to fail loading if the vref regulator is not declared. Since vref is optional, call devm_regulator_get_optional instead. Signed-off-by: Guenter Roeck <linux@roeck-us.net> Cc: Stable@vger.kernel.org Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Diffstat (limited to 'drivers/iio')
-rw-r--r--drivers/iio/adc/max1363.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/iio/adc/max1363.c b/drivers/iio/adc/max1363.c
index e283f2f..3602592 100644
--- a/drivers/iio/adc/max1363.c
+++ b/drivers/iio/adc/max1363.c
@@ -1560,7 +1560,7 @@ static int max1363_probe(struct i2c_client *client,
st->client = client;
st->vref_uv = st->chip_info->int_vref_mv * 1000;
- vref = devm_regulator_get(&client->dev, "vref");
+ vref = devm_regulator_get_optional(&client->dev, "vref");
if (!IS_ERR(vref)) {
int vref_uv;
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