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authorAxel Lin <axel.lin@ingics.com>2016-03-21 20:03:50 +0800
committerLinus Walleij <linus.walleij@linaro.org>2016-03-30 10:39:39 +0200
commit8d8ee18cc707f498b6dad18915576f23b00bcff8 (patch)
treebb2862066c6a7494e3e1b22d56961db3cf740f0b
parentfd975a7b180c9a8f6e02d2251eaabe9b0dcfeed6 (diff)
gpio: xgene: Prevent NULL pointer dereferencegpio-v4.6-2
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>
-rw-r--r--drivers/gpio/gpio-xgene.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/gpio/gpio-xgene.c b/drivers/gpio/gpio-xgene.c
index c0aa387664bf..0dc916191689 100644
--- a/drivers/gpio/gpio-xgene.c
+++ b/drivers/gpio/gpio-xgene.c
@@ -173,6 +173,11 @@ static int xgene_gpio_probe(struct platform_device *pdev)
}
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res) {
+ err = -EINVAL;
+ goto err;
+ }
+
gpio->base = devm_ioremap_nocache(&pdev->dev, res->start,
resource_size(res));
if (!gpio->base) {

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