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From: Takashi Iwai <tiwai@suse.de>
To: Wu Zhangjin <wuzhangjin@gmail.com>
Cc: Ralf Baechle <ralf@linux-mips.org>,
	Jaroslav Kysela <perex@perex.cz>,
	alsa-devel@alsa-project.org, linux-mips@linux-mips.org,
	linux-kernel@vger.kernel.org, Wu Zhangjin <wuzj@lemote.com>
Subject: Re: [PATCH] MIPS: Fixups of ALSA memory maps
Date: Mon, 16 Nov 2009 18:12:22 +0100	[thread overview]
Message-ID: <s5hd43iiebt.wl%tiwai@suse.de> (raw)
In-Reply-To: <9cbcd06037c18288a6493459b8f3a6e1562eca77.1258389992.git.wuzhangjin@gmail.com>

At Tue, 17 Nov 2009 00:48:14 +0800,
Wu Zhangjin wrote:
> 
> Hi, All
> 
> Seems this is MIPS specific, but it's not that easy to move this patch
> into the arch/mips part, So, any better solution?

Actually, this has been a looong-standing problem.
I have a series of patches to fix these issues, but it's more
intensively involved with dma_*() functions.

The patches can be found in test/dma-fix branch of sound GIT tree.
  git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6.git test/dma-fix

This basically adds dma_mmap_coherent() function to feasible
architectures, which is already implemented for ARM, so far.


thanks,

Takashi

  parent reply	other threads:[~2009-11-16 17:12 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-11-16 16:48 Wu Zhangjin
2009-11-16 17:06 ` Ralf Baechle
2009-11-16 17:14   ` Takashi Iwai
2009-11-17 13:50     ` Ralf Baechle
2009-11-16 17:12 ` Takashi Iwai [this message]
2009-11-16 17:43   ` Ralf Baechle
2009-11-17  9:29     ` Takashi Iwai
2009-11-18 14:20       ` Ralf Baechle
2009-11-18 17:47         ` Takashi Iwai
2009-11-21 12:31           ` Wu Zhangjin
2009-11-23  8:56             ` Takashi Iwai
2009-11-23 12:36               ` Ralf Baechle
2009-11-26 14:51                 ` Takashi Iwai

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