Merge branch 'topic/bypass' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator into regulator-supply

1 files changed, 14 insertions, 0 deletions

diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index 8362a0a5105d..f6d624dfcf9f 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -3110,6 +3110,20 @@ EXPORT_SYMBOL_GPL(regulator_sync_voltage);
 static int _regulator_get_voltage(struct regulator_dev *rdev)
 {
 	int sel, ret;
+	bool bypassed;
+
+	if (rdev->desc->ops->get_bypass) {
+		ret = rdev->desc->ops->get_bypass(rdev, &bypassed);
+		if (ret < 0)
+			return ret;
+		if (bypassed) {
+			/* if bypassed the regulator must have a supply */
+			if (!rdev->supply)
+				return -EINVAL;
+
+			return _regulator_get_voltage(rdev->supply->rdev);
+		}
+	}
 
 	if (rdev->desc->ops->get_voltage_sel) {
 		sel = rdev->desc->ops->get_voltage_sel(rdev);