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| author | Guenter Roeck <linux@roeck-us.net> | 2014-01-27 18:10:00 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-02-22 13:34:51 -0800 |
| commit | 45a77a9faa9f7d0da102ad224bf669a2a21a4cda (patch) | |
| tree | 039491f0fcb7a4647b6b64f57650cd60db8c4f52 | |
| parent | 0ced5ac8b802221153c432ba5f342159dae69c42 (diff) | |
| download | lwn-45a77a9faa9f7d0da102ad224bf669a2a21a4cda.tar.gz lwn-45a77a9faa9f7d0da102ad224bf669a2a21a4cda.zip | |
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 6118dced02b6..5edb991a5e12 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; |