Messages in this thread Patch in this message | | | From | Adam Ward <> | Date | Mon, 29 Nov 2021 22:10:12 +0000 | Subject | [PATCH V4 3/4] regulator: da9121: Prevent current limit change when enabled |
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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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