linux-kernel - Re: [PATCH 1/2] firewire: endianess fix

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Message-Id: <1204166422.15052.334.camel@pasglop>
Date:	Thu, 28 Feb 2008 13:40:22 +1100
From:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
To:	Jarod Wilson <jwilson@...hat.com>
Cc:	Stefan Richter <stefanr@...6.in-berlin.de>,
	Kristian Hoegsberg <krh@...planet.net>,
	linux-kernel@...r.kernel.org, linuxppc-dev@...abs.org,
	sparclinux@...r.kernel.org, linux1394-devel@...ts.sourceforge.net,
	Sam Ravnborg <sam@...nborg.org>,
	Harvey Harrison <harvey.harrison@...il.com>
Subject: Re: [PATCH 1/2] firewire: endianess fix


On Wed, 2008-02-27 at 14:58 -0500, Jarod Wilson wrote:
> On Saturday 23 February 2008 06:24:17 am Stefan Richter wrote:
> > The generation of incoming requests was filled in in wrong byte order on
> > machines with big endian CPU.
> >
> > Signed-off-by: Stefan Richter <stefanr@...6.in-berlin.de>
> > Cc: sparclinux@...r.kernel.org
> > Cc: linuxppc-dev@...abs.org
> > ---
> >
> > This patch is a shot in the dark, based on a warning when building with
> > C=1 CHECKFLAGS="-D__CHECK_ENDIAN__".  Is it really a fix, or was the
> > previous code accidentally correct?
> >
> > This needs to be tested on different big endian PCs, if possible with
> > the Apple Uninorth FireWire controller and other types of controllers.
> > One test which involves ohci->request_generation is simply with an SBP-2
> > device (harddisk, CD-ROM...).  Does SBP-2 login etc. work?
> 
> Works just fine with the Apple UniNorth controller in my powerbook in cursory 
> testing. Tested with multiple sbp2 hard disks, plugging and unplugging, 
> mounting and unmounting, etc.

Which specific rev/version of the uninorth controller ?

There is the "interesting" one has vendorID Apple and deviceID 0x0018,
the normal ones have different deviceIDs (and are just lucent
controllers afaik).

Ben.


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