linux-kernel - Re: [PATCH 2/7] x86: add free_coherent dma

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Message-ID: <20080813124900.GI14993@amd.com>
Date:	Wed, 13 Aug 2008 14:49:00 +0200
From:	Joerg Roedel <joerg.roedel@....com>
To:	FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>
CC:	mingo@...hat.com, tglx@...utronix.de, hpa@...or.com,
	linux-kernel@...r.kernel.org, iommu@...ts.linux-foundation.org,
	muli@...ibm.com
Subject: Re: [PATCH 2/7] x86: add free_coherent dma_ops callback to GART driver

On Wed, Aug 13, 2008 at 09:45:53AM +0900, FUJITA Tomonori wrote:
> On Tue, 12 Aug 2008 17:24:12 +0200
> Joerg Roedel <joerg.roedel@....com> wrote:
> 
> > Signed-off-by: Joerg Roedel <joerg.roedel@....com>
> > ---
> >  arch/x86/kernel/pci-gart_64.c |   10 ++++++++++
> >  1 files changed, 10 insertions(+), 0 deletions(-)
> > 
> > diff --git a/arch/x86/kernel/pci-gart_64.c b/arch/x86/kernel/pci-gart_64.c
> > index 55cc388..18db09b 100644
> > --- a/arch/x86/kernel/pci-gart_64.c
> > +++ b/arch/x86/kernel/pci-gart_64.c
> 
> It would be better to foil this to the first patch, I think. Any
> reasonable reason to add alloc_coherent and free_coherent with two
> separate patches?

Yes possible. Its always a bit hard to split the patches correctly. Some
maintainers prefer small patches and for others its split up too much
then. If I am in doubt I often chose to split a patch.

> I think that you can remove map_simple in gart (and please don't
> forget to remove map_simple in struct dma_mapping_ops. I think only
> GART uses that hook).

Ok, I will check that and send a sperate patch.

Joerg

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