Commit f7df20ec authored Aug 09, 2012 by Mark Brown

regulator: core: Use list_voltage() to read single voltage regulators

If the regulator doesn't supply a way of reading back the voltage but does
provide a list_voltage() operation then use that with a selector of zero
to read the voltage. Regulators doing this means that we have the list
operation there for consumers that want to configure themselves.

Reported-by: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

parent 215b8b05

drivers/regulator/core.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -2395,6 +2395,8 @@ static int _regulator_get_voltage(struct regulator_dev *rdev)
		ret = rdev->desc->ops->list_voltage(rdev, sel);
		} else if (rdev->desc->ops->get_voltage) {
		ret = rdev->desc->ops->get_voltage(rdev);
		} else if (rdev->desc->ops->list_voltage) {
		ret = rdev->desc->ops->list_voltage(rdev, 0);
		} else {
		return -EINVAL;
		}