regulator: max77693: Fix use of uninitialized regulator config

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@samsung.com>
Fixes: 80b022e29bfd ("regulator: max77693: Add max77693 regualtor driver.")
Cc: <stable@vger.kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/drivers/regulator/max77693.c b/drivers/regulator/max77693.c
index c67ff05..d158f71 100644 (file)
--- 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) {