Patch "regulator: core: Ensure we lock all regulators" has been added to the 4.4-stable tree

Patch "regulator: core: Ensure we lock all regulators" has been added to the 4.4-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    regulator: core: Ensure we lock all regulators

to the 4.4-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-core-ensure-we-lock-all-regulators.patch
and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 49a6bb7a1c0963f260e4b0dcc2c0e56ec65a28b2 Mon Sep 17 00:00:00 2001
From: Mark Brown <broonie@kernel.org>
Date: Tue, 1 Dec 2015 15:51:52 +0000
Subject: regulator: core: Ensure we lock all regulators

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);
 }
 


Patches currently in stable-queue which might be from broonie@kernel.org are

queue-4.4/regulator-core-ensure-we-lock-all-regulators.patch
queue-4.4/asoc-ssm4567-reset-device-before-regcache_sync.patch
queue-4.4/asoc-dapm-make-sure-we-have-a-card-when-displaying-component-widgets.patch
queue-4.4/regulator-core-fix-nested-locking-of-supplies.patch
queue-4.4/regulator-core-fix-regulator_lock_supply-regression.patch
queue-4.4/asoc-rt5640-correct-the-digital-interface-data-select.patch
queue-4.4/asoc-s3c24xx-use-const-snd_soc_component_driver-pointer.patch
queue-4.4/revert-regulator-core-fix-nested-locking-of-supplies.patch