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

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

Fixes: fc2979118f ("rtc: mediatek: Add MT6397 RTC driver")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/20220505125043.1594771-1-yangyingliang@huawei.com
This commit is contained in:
Yang Yingliang 2022-05-05 20:50:43 +08:00 committed by Alexandre Belloni
parent e60e8a7323
commit d3b43eb505
1 changed files with 2 additions and 0 deletions
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2
drivers/rtc/rtc-mt6397.c
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@ -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);