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Re: [PATCH] mips: Add dma_mmap_coherent()

To: Takashi Iwai <tiwai@suse.de>
Subject: Re: [PATCH] mips: Add dma_mmap_coherent()
From: Ralf Baechle <ralf@linux-mips.org>
Date: Wed, 27 Aug 2008 11:38:58 +0100
Cc: Grant Grundler <grundler@parisc-linux.org>, Joel Soete <soete.joel@scarlet.be>, "James.Bottomley" <James.Bottomley@HansenPartnership.com>, linux-mips <linux-mips@linux-mips.org>, linux-parisc <linux-parisc@vger.kernel.org>
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References: <K6047O$07C3A675C0E02FC7BE973C0D5DEF9AAA@scarlet.be> <s5hy72pmefh.wl%tiwai@suse.de> <48B0678E.9010208@scarlet.be> <s5hej4blrx7.wl%tiwai@suse.de> <20080826210118.GA26235@colo.lackof.org> <s5h4p57hv4h.wl%tiwai@suse.de>
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On Wed, Aug 27, 2008 at 07:42:06AM +0200, Takashi Iwai wrote:

> Right now it has to be a compile-time option because
> - dma_mmap_coherent() isn't implemented in every architecture (thus
>   fails to build), and 
> - pages allocated via dma_mmap_coherent() aren't always suitable for
>   SG-mapping.

I suggest you take this issue to linux-arch or linux-kernel.  There will
be some more people who will have input on this.

  Ralf

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