Commit ecb44816 authored Mar 24, 2019 by Kangjie Lu Committed by Greg Kroah-Hartman May 04, 2019

gpio: aspeed: fix a potential NULL pointer dereference



[ Upstream commit 6cf4511e9729c00a7306cf94085f9cc3c52ee723 ]

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>
Signed-off-by: Sasha Levin (Microsoft) <sashal@kernel.org>

parent 6d18191c

drivers/gpio/gpio-aspeed.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -861,6 +861,8 @@ 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);
		}