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Subject[PATCH V4 3/4] regulator: da9121: Prevent current limit change when enabled
Prevent changing current limit when enabled as a precaution against
possibile instability due to tight integration with switching cycle

Signed-off-by: Adam Ward <Adam.Ward.opensource@diasemi.com>
---
drivers/regulator/da9121-regulator.c | 5 +++++
1 file changed, 5 insertions(+)

diff --git a/drivers/regulator/da9121-regulator.c b/drivers/regulator/da9121-regulator.c
index a5a83b772a85..86149170bf6c 100644
--- a/drivers/regulator/da9121-regulator.c
+++ b/drivers/regulator/da9121-regulator.c
@@ -253,6 +253,11 @@ static int da9121_set_current_limit(struct regulator_dev *rdev,
goto error;
}

+ if (rdev->desc->ops->is_enabled(rdev)) {
+ ret = -EBUSY;
+ goto error;
+ }
+
ret = da9121_ceiling_selector(rdev, min_ua, max_ua, &sel);
if (ret < 0)
goto error;
--
2.25.1
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