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net: mvpp2: 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. Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -7377,6 +7377,10 @@ static int mvpp2_probe(struct platform_device *pdev)
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return PTR_ERR(priv->lms_base);
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} else {
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res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
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if (!res) {
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dev_err(&pdev->dev, "Invalid resource\n");
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return -EINVAL;
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}
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if (has_acpi_companion(&pdev->dev)) {
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/* In case the MDIO memory region is declared in
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* the ACPI, it can already appear as 'in-use'
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