diff options
| author | Guenter Roeck <linux@roeck-us.net> | 2014-01-27 18:10:00 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-02-22 13:32:27 -0800 |
| commit | 5be594952c283412027639d60bc51116f64fdcbe (patch) | |
| tree | 6f4c99482e5012d884bca2ad2f0df06d4366c68c | |
| parent | aee63f4dc12b2f5208c8fcd44185f26422ad6ed9 (diff) | |
iio: max1363: Use devm_regulator_get_optional for optional regulator
commit 55b40d37311807a6bb2acdae0df904f54a0da3ae upstream.
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>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/iio/adc/max1363.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/iio/adc/max1363.c b/drivers/iio/adc/max1363.c index 4fb35d1d749..cfb3d39b666 100644 --- a/drivers/iio/adc/max1363.c +++ b/drivers/iio/adc/max1363.c @@ -1527,7 +1527,7 @@ 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; |