From: Yang Yingliang <yangyingliang@huawei.com>
To: <linux-kernel@vger.kernel.org>, <linux-usb@vger.kernel.org>
Cc: <gregkh@linuxfoundation.org>, <stern@rowland.harvard.edu>
Subject: [PATCH v2] usb: host: ohci-tmio: check return value after calling platform_get_resource()
Date: Mon, 11 Oct 2021 21:49:20 +0800 [thread overview]
Message-ID: <20211011134920.118477-1-yangyingliang@huawei.com> (raw)
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>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
---
v2:
combine the new checkings with cell checking
---
drivers/usb/host/ohci-tmio.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/usb/host/ohci-tmio.c b/drivers/usb/host/ohci-tmio.c
index 08ec2ab0d95a..3f3d62dc0674 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)
--
2.25.1
next reply other threads:[~2021-10-11 13:42 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-11 13:49 Yang Yingliang [this message]
-- strict thread matches above, loose matches on Subject: below --
2021-09-16 3:13 [PATCH v2] usb: host: ohci-tmio: check return value after calling platform_get_resource() Yang Yingliang
2021-09-16 14:10 ` Alan Stern
2021-09-21 14:32 ` Greg KH
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20211011134920.118477-1-yangyingliang@huawei.com \
--to=yangyingliang@huawei.com \
--cc=gregkh@linuxfoundation.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-usb@vger.kernel.org \
--cc=stern@rowland.harvard.edu \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.