From: Yang Yingliang <yangyingliang@huawei.com>
Date: Mon, 11 Oct 2021 13:49:20 +0000 (+0800)
Subject: usb: host: ohci-tmio: check return value after calling platform_get_resource()
X-Git-Tag: v4.4.293~40
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=28e016e02118917e50a667bc72fb80098cf2b460;p=thirdparty%2Fkernel%2Fstable.git

usb: host: ohci-tmio: check return value after calling platform_get_resource()

[ Upstream commit 9eff2b2e59fda25051ab36cd1cb5014661df657b ]

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

Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20211011134920.118477-1-yangyingliang@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---

diff --git a/drivers/usb/host/ohci-tmio.c b/drivers/usb/host/ohci-tmio.c
index 9c9e97294c18d..4d42ae3b2fd6d 100644
--- a/drivers/usb/host/ohci-tmio.c
+++ b/drivers/usb/host/ohci-tmio.c
@@ -199,7 +199,7 @@ static int ohci_hcd_tmio_drv_probe(struct platform_device *dev)
 	if (usb_disabled())
 		return -ENODEV;
 
-	if (!cell)
+	if (!cell || !regs || !config || !sram)
 		return -EINVAL;
 
 	if (irq < 0)