linux-kernel - Re: [PATCH] ata: libata depends on HAS

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Message-ID: <4A0B5E5A.4090906@gmail.com>
Date:	Wed, 13 May 2009 17:57:14 -0600
From:	Robert Hancock <hancockrwd@...il.com>
To:	Alan Cox <alan@...rguk.ukuu.org.uk>
CC:	Brad Boyer <flar@...andria.com>,
	Michael Schmitz <schmitz@...phys.uni-duesseldorf.de>,
	Arnd Bergmann <arnd@...db.de>, linux-kernel@...r.kernel.org,
	Jeff Garzik <jgarzik@...ox.com>, linux-ide@...r.kernel.org,
	takata@...ux-m32r.org, geert@...ux-m68k.org,
	linux-m68k@...r.kernel.org, ysato@...rs.sourceforge.jp
Subject: Re: [PATCH] ata: libata depends on HAS_DMA

Alan Cox wrote:
>>> If it doesn't interfere with plain PIO mode, fine. 
>> I agree. There definitely needs to still be support for IDE ports that
>> don't have DMA capability.
> 
> There is - it's just if the platform doesn't implement the dma_* APIs you
> get a problem.

Wouldn't the easiest solution be to just dummy out the DMA API calls on 
this platform to always fail? That would fix these compile problems..
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