From: Alan Stern <stern@rowland.harvard.edu>
To: Colin Ian King <colin.king@canonical.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Zhang Shengju <zhangshengju@cmss.chinamobile.com>,
Tang Bin <tangbin@cmss.chinamobile.com>,
linux-usb@vger.kernel.org, kernel-janitors@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH][next] USB: EHCI: ehci-mv: fix less than zero comparison of an unsigned int
Date: Fri, 15 May 2020 14:43:01 -0400 [thread overview]
Message-ID: <20200515184301.GA13795@rowland.harvard.edu> (raw)
In-Reply-To: <342e8fc0-c961-d9f0-f2d1-bd455ce06d86@canonical.com>
On Fri, May 15, 2020 at 06:26:04PM +0100, Colin Ian King wrote:
> On 15/05/2020 18:21, Alan Stern wrote:
> > On Fri, May 15, 2020 at 05:54:53PM +0100, Colin King wrote:
> >> From: Colin Ian King <colin.king@canonical.com>
> >>
> >> The comparison of hcd->irq to less than zero for an error check will
> >> never be true because hcd->irq is an unsigned int. Fix this by
> >> assigning the int retval to the return of platform_get_irq and checking
> >> this for the -ve error condition and assigning hcd->irq to retval.
> >>
> >> Addresses-Coverity: ("Unsigned compared against 0")
> >> Fixes: c856b4b0fdb5 ("USB: EHCI: ehci-mv: fix error handling in mv_ehci_probe()")
> >> Signed-off-by: Colin Ian King <colin.king@canonical.com>
> >> ---
> >
> > Thanks to Coverity for spotting this. Any reason why it didn't spot
> > exactly the same mistake in the ohci-da8xx.c driver?
>
> No idea, it is curious that it can spot one error but miss another.
> Sometimes I see these issues on the next scan, so it maybe the database
> diff'ing is awry.
>
> >
> > Also, why wasn't the patch CC'ed for the stable series?
>
> My bad on that. Human error
Actually the question itself was my mistake. I didn't notice that your
patch was a fix to something that was just merged and hadn't been CC'ed
to stable.
Alan Stern
next prev parent reply other threads:[~2020-05-15 18:43 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-15 16:54 [PATCH][next] USB: EHCI: ehci-mv: fix less than zero comparison of an unsigned int Colin King
2020-05-15 17:21 ` Alan Stern
2020-05-15 17:26 ` Colin Ian King
2020-05-15 18:43 ` Alan Stern [this message]
2020-05-15 23:23 ` [PATCH][next] USB: EHCI: ehci-mv: fix less than zero comparisonof " Tang Bin
2020-05-16 1:17 ` Alan Stern
2020-05-16 6:30 ` [PATCH][next] USB: EHCI: ehci-mv: fix less than zero comparison of " Greg Kroah-Hartman
2020-05-16 9:25 ` Colin Ian King
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=20200515184301.GA13795@rowland.harvard.edu \
--to=stern@rowland.harvard.edu \
--cc=colin.king@canonical.com \
--cc=gregkh@linuxfoundation.org \
--cc=kernel-janitors@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-usb@vger.kernel.org \
--cc=tangbin@cmss.chinamobile.com \
--cc=zhangshengju@cmss.chinamobile.com \
/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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).