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@stericsson.com>
Acked-by: Linus Walleij <linus.walleij@stericsson.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>

diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index f1d10c974cd43f3387467524822b93d0bd68742f..c62563322969732d5ccba7fa457ac11718c1dd27 100644 (file)
--- 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",