Commit d3b43eb5 authored by Yang Yingliang's avatar Yang Yingliang Committed by Alexandre Belloni
Browse files

rtc: mt6397: check return value after calling platform_get_resource() 



It will cause null-ptr-deref if platform_get_resource() returns NULL,
we need check the return value.

Fixes: fc297911 ("rtc: mediatek: Add MT6397 RTC driver")
Signed-off-by: default avatarYang Yingliang <yangyingliang@huawei.com>
Reviewed-by: default avatarAngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: default avatarAlexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/20220505125043.1594771-1-yangyingliang@huawei.com
parent e60e8a73

drivers/rtc/rtc-mt6397.c

+2 −0
Original line number Diff line number Diff line
@@ -269,6 +269,8 @@ static int mtk_rtc_probe(struct platform_device *pdev) 
		return -ENOMEM;



	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);

	if (!res)

		return -EINVAL;

	rtc->addr_base = res->start;



	rtc->data = of_device_get_match_data(&pdev->dev);