This is a note to let you know that I've just added the patch titled
regulator: remove superfluous lock in regulator_resolve_coupling()
to the 5.8-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
regulator-remove-superfluous-lock-in-regulator_resol.patch
and it can be found in the queue-5.8 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 0e9ffb73fbd3b6a25aa9e8eb5d1e23d4cab49e13
Author: MichaÅ? MirosÅ?aw <mirq-linux@xxxxxxxxxxxx>
Date: Wed Aug 12 03:31:38 2020 +0200
regulator: remove superfluous lock in regulator_resolve_coupling()
[ Upstream commit a577f3456c0a2fac3dee037c483753e6e68f3e49 ]
The code modifies rdev, but locks c_rdev instead. Remove the lock
as this is held together by regulator_list_mutex taken in the caller.
Fixes: f9503385b187 ("regulator: core: Mutually resolve regulators coupling")
Signed-off-by: MichaÅ? MirosÅ?aw <mirq-linux@xxxxxxxxxxxx>
Reviewed-by: Dmitry Osipenko <digetx@xxxxxxxxx>
Link: https://lore.kernel.org/r/25eb81cefb37a646f3e44eaaf1d8ae8881cfde52.1597195321.git.mirq-linux@xxxxxxxxxxxx
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index 86107d2e1733e..0ba5ca7082afd 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -4891,13 +4891,9 @@ static void regulator_resolve_coupling(struct regulator_dev *rdev)
return;
}
- regulator_lock(c_rdev);
-
c_desc->coupled_rdevs[i] = c_rdev;
c_desc->n_resolved++;
- regulator_unlock(c_rdev);
-
regulator_resolve_coupling(c_rdev);
}
}
