linux-kernel - Re: [PATCH] dma-mapping-broken.h: flesh-out DMA API stubs

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Message-ID: <20070223034243.GA7988@osiris.ibm.com>
Date:	Fri, 23 Feb 2007 04:42:43 +0100
From:	Heiko Carstens <heiko.carstens@...ibm.com>
To:	"John W. Linville" <linville@...driver.com>
Cc:	linux-kernel@...r.kernel.org, James.Bottomley@...elEye.com,
	Tejun Heo <htejun@...il.com>, Jeff Garzik <jeff@...zik.org>,
	Martin Schwidefsky <schwidefsky@...ibm.com>
Subject: Re: [PATCH] dma-mapping-broken.h: flesh-out DMA API stubs

On Thu, Feb 22, 2007 at 07:59:45PM -0500, John W. Linville wrote:
> This allows some drivers compile on arches that don't support DMA
> (e.g. s390).

Which drivers are we talking about? Last time I checked an allmodconfig
just compiled.
I'd rather like to the opposite: rip out everything that depends on DMA
(via e.g. CONFIG_HAS_DMA), so we don't have to compile in all the unused
code. If that is is possible...

-- 
Heiko Carstens
Linux on System z Development

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