linux-kernel - Re: [PATCH 0/2] unify DMA_..BIT

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Date:	Tue, 18 Sep 2007 08:08:54 +0200
From:	Borislav Petkov <bbpetkov@...oo.de>
To:	Jeremy Fitzhardinge <jeremy@...p.org>
Cc:	Muli Ben-Yehuda <muli@...ibm.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/2] unify DMA_..BIT_MASK definitions: v1

On Mon, Sep 17, 2007 at 11:01:21PM -0700, Jeremy Fitzhardinge wrote:
> Muli Ben-Yehuda wrote:
> >> +#define DMA_64BIT_MASK	DMA_BIT_MASK(64)
> >>     
> >
> > This one does not do what you mean. You need an explicit mask or a
> > ~0ULL here.
> 
> Yeah, I was just about to comment on it.  Its possible the compiler
> might decide to shift by x%64 = 0.
> 
>     J
ups, i knew that this might be a corner/boundary case. Thanks, updated patches
follow...
-- 
Regards/Gruß,
    Boris.
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