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

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Date:	Tue, 18 Sep 2007 08:34:43 +0200
From:	Borislav Petkov <bbpetkov@...oo.de>
To:	Satyam Sharma <satyam@...radead.org>
Cc:	Jeremy Fitzhardinge <jeremy@...p.org>,
	Muli Ben-Yehuda <muli@...ibm.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/2] unify DMA_..BIT_MASK definitions: v1

On Tue, Sep 18, 2007 at 11:46:40AM +0530, Satyam Sharma wrote:
> Hi Borislav,
> 
> 
> On Tue, 18 Sep 2007, Borislav Petkov wrote:
> 
> > 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...
> 
> Please fold all three patches into a single patch in the updated series,
> otherwise git bisecters falling in between these patches will see the
> "redefinition ... previous definition was here" warnings of gcc ...

Will do later today, thanks.
-- 
Regards/Gruß,
    Boris.
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