[PATCH 3.16.y-ckt 014/254] regulator: max77693: Fix use of uninitialized regulator config

[Luis Henriques]

3.16.7-ckt2 -stable review patch.  If anyone has any objections, please let me know.

------------------

From: Krzysztof Kozlowski <k.kozlowski at samsung.com>

commit ca0c37a0b489bb14bf3e1549e7a8d0c9a17f4919 upstream.

Driver allocated on stack struct regulator_config but didn't initialize
it fully. Few fields (driver_data, ena_gpio) were left untouched. This
lead to using random ena_gpio values as GPIOs for max77693 regulators.

On occasion these values could match real GPIO numbers leading to
interfering with other drivers and to unsuccessful enable/disable of
regulator.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski at samsung.com>
Fixes: 80b022e29bfd ("regulator: max77693: Add max77693 regualtor driver.")
Signed-off-by: Mark Brown <broonie at kernel.org>
Signed-off-by: Luis Henriques <luis.henriques at canonical.com>
---
 drivers/regulator/max77693.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/regulator/max77693.c b/drivers/regulator/max77693.c
index 653a58b49cdf..ddd67b89006c 100644
--- a/drivers/regulator/max77693.c
+++ b/drivers/regulator/max77693.c
@@ -227,7 +227,7 @@ static int max77693_pmic_probe(struct platform_device *pdev)
 	struct max77693_dev *iodev = dev_get_drvdata(pdev->dev.parent);
 	struct max77693_regulator_data *rdata = NULL;
 	int num_rdata, i;
-	struct regulator_config config;
+	struct regulator_config config = { };
 
 	num_rdata = max77693_pmic_init_rdata(&pdev->dev, &rdata);
 	if (!rdata || num_rdata <= 0) {
-- 
2.1.0