Commit 55b40d37 authored Jan 27, 2014 by Guenter Roeck Committed by Jonathan Cameron Feb 08, 2014

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>

parent 5585215b

drivers/iio/adc/max1363.c

+1 −1

Original line number	Original line	Diff line number	Diff line
	@@ -1560,7 +1560,7 @@ static int max1363_probe(struct i2c_client *client,
	st->client = client;		st->client = client;

	st->vref_uv = st->chip_info->int_vref_mv * 1000;		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)) {		if (!IS_ERR(vref)) {
	int vref_uv;		int vref_uv;