Messages in this thread Patch in this message | ![/](/images/icornerl.gif) | | From | Miaoqian Lin <> | Subject | [PATCH] rtc: mt6397: Fix potential NULL dereference in mtk_rtc_probe | Date | Mon, 4 Apr 2022 13:25:53 +0000 |
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platform_get_resource() may return NULL, add proper check to avoid potential NULL dereferencing.
Fixes: fc2979118f3f ("rtc: mediatek: Add MT6397 RTC driver") Signed-off-by: Miaoqian Lin <linmq006@gmail.com> --- drivers/rtc/rtc-mt6397.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/rtc/rtc-mt6397.c b/drivers/rtc/rtc-mt6397.c index 80dc479a6ff0..07c6679366e0 100644 --- a/drivers/rtc/rtc-mt6397.c +++ b/drivers/rtc/rtc-mt6397.c @@ -269,6 +269,9 @@ 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); -- 2.17.1
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