linux-kernel - Re: [PATCH] amd64_edac: fix size decoding error on K8

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Message-ID: <20111109210052.GJ14181@aftab>
Date:	Wed, 9 Nov 2011 22:00:52 +0100
From:	Borislav Petkov <bp@...64.org>
To:	Tony Luck <tony.luck@...il.com>
Cc:	Niklas Söderlund 
	<niklas.soderlund@...csson.com>,
	"dougthompson@...ssion.com" <dougthompson@...ssion.com>,
	"linux-edac@...r.kernel.org" <linux-edac@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] amd64_edac: fix size decoding error on K8

On Wed, Nov 09, 2011 at 12:50:42PM -0800, Tony Luck wrote:
> On Wed, Nov 9, 2011 at 12:35 PM, Borislav Petkov <bp@...64.org> wrote:
> > +               diff = cs_mode / 3 + (unsigned)(cs_mode > 5);
> > +
> > +               return 32 << (cs_mode - diff);
> 
> Code is correct - but looks like an entry for an obfuscated C
> competition.

I know, right?! Especially casting the boolean to an unsigned int. Yuck!
But it is compact the stupid thing.

> Perhaps it deserves a comment!

Sure it does, will do.

Thanks.

-- 
Regards/Gruss,
Boris.

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