From: Arnd Bergmann <arnd@arndb.de>
To: Dan Carpenter <dan.carpenter@oracle.com>
Cc: masa-korg@dsn.okisemi.com,
"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
linux-kernel@vger.kernel.org,
Tomoya MORINAGA <tomoya.rohm@gmail.com>
Subject: Re: add Packet hub driver for Topcliff Platform controller hub
Date: Tue, 8 Jan 2013 11:56:47 +0000 [thread overview]
Message-ID: <201301081156.47419.arnd@arndb.de> (raw)
In-Reply-To: <20130108114846.GQ7302@mwanda>
On Tuesday 08 January 2013, Dan Carpenter wrote:
> On Tue, Jan 08, 2013 at 10:49:14AM +0000, Arnd Bergmann wrote:
> > On Monday 07 January 2013, Dan Carpenter wrote:
> > > Sorry my question is about an old patch. Smatch complains because we
> > > only pass a PAGE_SIZE buffer to sysfs files so the test for
> > > "if (count > PCH_PHUB_OROM_SIZE) {" makes it think we are overflowing.
> > > In fact, count is never more than 4096 so there is no overflow, but I
> > > also think that it means only the first 4096 bytes of the firmware gets
> > > updated.
> >
> > I think it works correctly as long as user space keeps writing into the
> > bin file when getting short write return (4096 bytes).
> >
>
> Ah. Ok. I misunderstood. I've looked through it again and you're
> right.
>
> Sorry for the noise.
No worries, the report looked totally plausible and I also had to look
up how bin files work.
Arnd
prev parent reply other threads:[~2013-01-08 11:57 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-07 9:02 add Packet hub driver for Topcliff Platform controller hub Dan Carpenter
2013-01-08 10:30 ` Tomoya MORINAGA
2013-01-08 11:38 ` Dan Carpenter
2013-01-08 10:49 ` Arnd Bergmann
2013-01-08 11:48 ` Dan Carpenter
2013-01-08 11:56 ` Arnd Bergmann [this message]
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