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gpio: xgene: Prevent NULL pointer dereference 

platform_get_resource() can return NULL, thus add NULL test to prevent NULL
pointer dereference.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Axel Lin 2016-03-21 20:03:50 +08:00 committed by Linus Walleij
parent fd975a7b18
commit 8d8ee18cc7
1 changed files with 5 additions and 0 deletions
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5
drivers/gpio/gpio-xgene.c
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@ -173,6 +173,11 @@ static int xgene_gpio_probe(struct platform_device *pdev)
} }
res = platform_get_resource(pdev, IORESOURCE_MEM, 0); res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
err = -EINVAL;
goto err;
}
gpio->base = devm_ioremap_nocache(&pdev->dev, res->start, gpio->base = devm_ioremap_nocache(&pdev->dev, res->start,
resource_size(res)); resource_size(res));
if (!gpio->base) { if (!gpio->base) {