linux-kernel - Re: [PATCH] Move valid_dma_direction() from x86

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Date:	Thu, 3 Aug 2006 08:25:19 +0200
From:	Rolf Eike Beer <eike-kernel@...tec.de>
To:	Muli Ben-Yehuda <muli@...ibm.com>
Cc:	Andrew Morton <akpm@...l.org>, linux-kernel@...r.kernel.org,
	Andi Kleen <ak@...e.de>, discuss@...-64.org
Subject: Re: [PATCH] Move valid_dma_direction() from x86_64 to generic code

Muli Ben-Yehuda wrote:
> On Wed, Aug 02, 2006 at 05:20:40PM +0200, Rolf Eike Beer wrote:
> > As suggested by Muli Ben-Yehuda this function is moved to generic code as
> > may be useful for all archs.
>
> I like it, but ...

> Several files include asm/dma-mapping.h directly, which will now cause
> them to fail to compile on x86-64 due to the missing definition for
> valid_dma_direction, unless by chance another header already brought
> it in indirectly. I guess the right thing to do is convert them all to
> using linux/dma-mapping.h instead.

Yes, akpm already fixed it up. Sorry guys, currently no x86 kernel around 
here. Need to fix that.

> ./arch/x86_64/kernel/pci-swiotlb.c:6:#include <asm/dma-mapping.h>
> ./drivers/net/fec_8xx/fec_main.c:40:#include <asm/dma-mapping.h>
> ./drivers/net/fs_enet/fs_enet.h:11:#include <asm/dma-mapping.h>
> ./include/asm-x86_64/swiotlb.h:5:#include <asm/dma-mapping.h>

I suspect it to be a bug anyway that every of this files ever included 
asm/dma-mapping.h.

> ./include/linux/dma-mapping.h:27:#include <asm/dma-mapping.h>

This is perfectly valid, isn't it :)

Eike

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