From: Kangjie Lu <kjlu@umn.edu>
Date: Sun, 24 Mar 2019 23:10:02 +0000 (-0500)
Subject: gpio: aspeed: fix a potential NULL pointer dereference
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=6cf4511e9729c00a7306cf94085f9cc3c52ee723;p=linux.git

gpio: aspeed: fix a potential NULL pointer dereference

In case devm_kzalloc, the patch returns ENOMEM to avoid potential
NULL pointer dereference.

Signed-off-by: Kangjie Lu <kjlu@umn.edu>
Reviewed-by: Andrew Jeffery <andrew@aj.id.au>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
---

diff --git a/drivers/gpio/gpio-aspeed.c b/drivers/gpio/gpio-aspeed.c
index 854bce4fb9e72..217507002dbc3 100644
--- a/drivers/gpio/gpio-aspeed.c
+++ b/drivers/gpio/gpio-aspeed.c
@@ -1224,6 +1224,8 @@ static int __init aspeed_gpio_probe(struct platform_device *pdev)
 
 	gpio->offset_timer =
 		devm_kzalloc(&pdev->dev, gpio->chip.ngpio, GFP_KERNEL);
+	if (!gpio->offset_timer)
+		return -ENOMEM;
 
 	return aspeed_gpio_setup_irqs(gpio, pdev);
 }