From: Sascha Hauer <s.hauer@pengutronix.de>
Date: Wed, 29 Feb 2012 08:01:40 +0000 (+0100)
Subject: regulator: mc13783: bail out without platform data
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=0757b6020f5aaa9f770068ca0396c0ea5cb0740d;p=linux-beck.git

regulator: mc13783: bail out without platform data

the platform data pointer is used without checking it. Bail out
in the driver instead of crashing the kernel.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
---

diff --git a/drivers/regulator/mc13783-regulator.c b/drivers/regulator/mc13783-regulator.c
index 8e9b90ad88ae..6c0face87ffe 100644
--- a/drivers/regulator/mc13783-regulator.c
+++ b/drivers/regulator/mc13783-regulator.c
@@ -344,6 +344,9 @@ static int __devinit mc13783_regulator_probe(struct platform_device *pdev)
 
 	dev_dbg(&pdev->dev, "%s id %d\n", __func__, pdev->id);
 
+	if (!pdata)
+		return -EINVAL;
+
 	priv = devm_kzalloc(&pdev->dev, sizeof(*priv) +
 			pdata->num_regulators * sizeof(priv->regulators[0]),
 			GFP_KERNEL);