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| author | Adam Ward <Adam.Ward.opensource@diasemi.com> | 2021-11-30 01:10:12 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-01-27 13:04:32 +0300 |
| commit | f168858f60962161a32e94acddc5a241327f70aa (patch) | |
| tree | a194870f4bd013ebe97fa5cc428702f91cb022ef /drivers/regulator | |
| parent | 34b1e259b1f5a39787fd04a7f1e526e413d8647a (diff) | |
| download | linux-f168858f60962161a32e94acddc5a241327f70aa.tar.xz | |
regulator: da9121: Prevent current limit change when enabled
[ Upstream commit 24f0853228f3b98f1ef08d5824376c69bb8124d2 ]
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>
Signed-off-by: Sasha Levin <sashal@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 e66925090258..0a4fd449c27d 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; |