linux-kernel - [PATCH 0/2] firewire: endinaness warnings (was Re: sparse

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Message-ID: <tkrat.e2bfb30f2c0ae70a@s5r6.in-berlin.de>
Date:	Sat, 23 Feb 2008 12:23:30 +0100 (CET)
From:	Stefan Richter <stefanr@...6.in-berlin.de>
To:	linux1394-devel@...ts.sourceforge.net
cc:	Harvey Harrison <harvey.harrison@...il.com>,
	Sam Ravnborg <sam@...nborg.org>, linux-kernel@...r.kernel.org,
	sparclinux@...r.kernel.org, linuxppc-dev@...abs.org,
	Kristian Hoegsberg <krh@...planet.net>,
	Jarod Wilson <jwilson@...hat.com>
Subject: [PATCH 0/2] firewire: endinaness warnings (was Re: sparse - make
 __CHECK_ENDIAN__ default enabled?)

On 20 Feb, Harvey Harrison wrote on LKML:
> On Wed, 2008-02-20 at 23:03 +0100, Sam Ravnborg wrote:
>> Hi Harvey.
>> 
>> Can I ask you to look into the worst offenders so we
>> can make -D__CHECK_ENDIAN__ enabled per default
>> in the kernel.
>> Or maybe we should do it anyway?
> 
> Well, I've got the worst of fs and drivers/ata done so far, still
> weeping over the 5500 warnings in drivers. (X86_32 allyesconfig).
> People ignore the existing warnings anyway, why not toss a few more
> on the pile?
> 
> I'll look them over tonight and see how bad it would be.

I looked into drivers/firewire and drivers/ieee1394.  As expected, there
are quite a lot endianess related warnings in the latter because this is
code from way before sparse was regularly used.

There are also a few warnings in the former, even though sparse checks
were run before submission of the whole drivers/firewire stack.  I will
follow up with two patches:
	1/2 firewire: endianess fix
	2/2 firewire: endianess annotations
Whether the "fix" is really a fix remains to be seen; I don't have a big
endian Linux box myself.
-- 
Stefan Richter
-=====-==--- --=- =-===
http://arcgraph.de/sr/

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