| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.4 114/163] regulator: core: Ensure we lock all regulators | Date | Mon, 2 May 2016 17:12:22 -0700 |
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4.4-stable review patch. If anyone has any objections, please let me know.
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From: Mark Brown <broonie@kernel.org>
commit 49a6bb7a1c0963f260e4b0dcc2c0e56ec65a28b2 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>
--- drivers/regulator/core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/regulator/core.c +++ b/drivers/regulator/core.c @@ -141,7 +141,7 @@ static void regulator_lock_supply(struct 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); }
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