linux-kernel - [PATCH v2] regulator: regulator disable supply fix

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Message-ID: <1288706135-30836-1-git-send-email-mattias.wallin@stericsson.com>
Date:	Tue, 2 Nov 2010 14:55:34 +0100
From:	Mattias Wallin <mattias.wallin@...ricsson.com>
To:	Liam Girdwood <lrg@...mlogic.co.uk>,
	Mark Brown <broonie@...nsource.wolfsonmicro.com>
Cc:	<linux-kernel@...r.kernel.org>,
	Mattias Wallin <mattias.wallin@...ricsson.com>
Subject: [PATCH v2] regulator: regulator disable supply fix

This patch fixes a disable failure when regulator supply is used.
A while loop in regulator disable checks for supply pointer != NULL
but the pointer is not always updated, resulting in the while loop
running too many times causing a disable failure.

Signed-off-by: Mattias Wallin <mattias.wallin@...ricsson.com>
Acked-by: Linus Walleij <linus.walleij@...ricsson.com>
Acked-by: Mark Brown <broonie@...nsource.wolfsonmicro.com>
---
 drivers/regulator/core.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index f1d10c9..c625633 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -1359,6 +1359,7 @@ static int _regulator_disable(struct regulator_dev *rdev,
 		struct regulator_dev **supply_rdev_ptr)
 {
 	int ret = 0;
+	*supply_rdev_ptr = NULL;
 
 	if (WARN(rdev->use_count <= 0,
 			"unbalanced disables for %s\n",
-- 
1.6.3.3

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