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From: Yang Yingliang <yangyingliang@huawei.com>
To: <linux-kernel@vger.kernel.org>, <linux-usb@vger.kernel.org>
Cc: <alcooperx@gmail.com>, <gregkh@linuxfoundation.org>
Subject: [PATCH -next] usb: misc: brcmstb-usb-pinmap: check return value after calling platform_get_resource()
Date: Sat, 5 Jun 2021 16:09:14 +0800	[thread overview]
Message-ID: <20210605080914.2057758-1-yangyingliang@huawei.com> (raw)

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

Fixes: 517c4c44b323 ("usb: Add driver to allow any GPIO to be used for 7211 USB signals")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
---
 drivers/usb/misc/brcmstb-usb-pinmap.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/usb/misc/brcmstb-usb-pinmap.c b/drivers/usb/misc/brcmstb-usb-pinmap.c
index b3cfe8666ea7..336653091e3b 100644
--- a/drivers/usb/misc/brcmstb-usb-pinmap.c
+++ b/drivers/usb/misc/brcmstb-usb-pinmap.c
@@ -263,6 +263,8 @@ static int __init brcmstb_usb_pinmap_probe(struct platform_device *pdev)
 		return -EINVAL;
 
 	r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (!r)
+		return -EINVAL;
 
 	pdata = devm_kzalloc(&pdev->dev,
 			     sizeof(*pdata) +
-- 
2.25.1


                 reply	other threads:[~2021-06-05  8:05 UTC|newest]

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