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regulator: core: Ensure we lock all regulators

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commit 49a6bb7a1c upstream.

The latest workaround for the lockdep interface's not using the second
argument of mutex_lock_nested() changed the loop missed locking the last
regulator due to a thinko with the loop termination condition exiting
one regulator too soon.

Reported-by: Tyler Baker <tyler.baker@linaro.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Mark Brown
2015-12-01 15:51:52 +00:00
committed by popcornmix
parent 9defb34856
commit a065c1ff10
1 changed files with 1 additions and 1 deletions
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2
drivers/regulator/core.c
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@@ -141,7 +141,7 @@ static void regulator_lock_supply(struct regulator_dev *rdev)
int i;
mutex_lock(&rdev->mutex);
for (i = 1; rdev->supply; rdev = rdev->supply->rdev, i++)
for (i = 1; rdev; rdev = rdev->supply->rdev, i++)
mutex_lock_nested(&rdev->mutex, i);
}