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| author | Adam Ward <Adam.Ward.opensource@diasemi.com> | 2021-11-29 22:10:12 +0000 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2021-11-30 13:08:17 +0000 |
| commit | 24f0853228f3b98f1ef08d5824376c69bb8124d2 (patch) | |
| tree | ef14e0ff751382a85ee6d178d03cfdb49f441273 /drivers/regulator | |
| parent | 59eadd2af3f717f2ff70dbb6c153757dc1650651 (diff) | |
| download | lwn-24f0853228f3b98f1ef08d5824376c69bb8124d2.tar.gz lwn-24f0853228f3b98f1ef08d5824376c69bb8124d2.zip | |
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>
Link: https://lore.kernel.org/r/52ee682476004a1736c1e0293358987319c1c415.1638223185.git.Adam.Ward.opensource@diasemi.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/regulator')
| -rw-r--r-- | drivers/regulator/da9121-regulator.c | 5 |
1 files changed, 5 insertions, 0 deletions
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; |