lkml.org 
[lkml]   [2022]   [Jan]   [24]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Subject[PATCH 5.16 0602/1039] regulator: da9121: Prevent current limit change when enabled
    Date
    From: Adam Ward <Adam.Ward.opensource@diasemi.com>

    [ 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>
    ---
    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 e669250902580..0a4fd449c27d1 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;
    --
    2.34.1


    \
     
     \ /
      Last update: 2022-01-24 23:11    [W:2.079 / U:0.412 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site