From: Sachin Kamat <sachin.kamat@linaro.org>
Date: Wed, 12 Jun 2013 04:02:45 +0000 (+0530)
Subject: gpio-sta2x11: Fix potential NULL pointer dereference
X-Git-Tag: v3.12-rc1~512^2~8
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=cd73891647a19f4b52f23d23f5c68175b93b56fe;p=kernel%2Fkernel-generic.git

gpio-sta2x11: Fix potential NULL pointer dereference

devm_kzalloc can return NULL. Check for it before dereferencing.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---

diff --git a/drivers/gpio/gpio-sta2x11.c b/drivers/gpio/gpio-sta2x11.c
index 5585425..9b55645 100644
--- a/drivers/gpio/gpio-sta2x11.c
+++ b/drivers/gpio/gpio-sta2x11.c
@@ -371,6 +371,8 @@ static int gsta_probe(struct platform_device *dev)
 	res = platform_get_resource(dev, IORESOURCE_MEM, 0);
 
 	chip = devm_kzalloc(&dev->dev, sizeof(*chip), GFP_KERNEL);
+	if (!chip)
+		return -ENOMEM;
 	chip->dev = &dev->dev;
 	chip->reg_base = devm_request_and_ioremap(&dev->dev, res);