Re: [PATCH] MIPS: Fixups of ALSA memory maps

[Takashi Iwai <tiwai@suse.de>]

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