[PATCH 0/3] ALSA fixes for non-coherent ppc32

[Takashi Iwai <tiwai@suse.de>]

Hi,

I've tried to renew the fixes of ALSA issues about non-coherent DMA
memories.  The last patch worked for SG-buffers somehow but would
result in a problem if many pages are allocated because of
dma_alloc_coherent() handling.  Now, I chose a more simpler
workaround: the SG-buffers are handled as simple continuous buffers.

This time I split the patches to several parts.  The first patch
contains a very lazy dma_mmap_coherent() implementation for ppc32.
The next patch adds the call of dma_mmap_coherent() for the default
mmap of ALSA PCM.  And the last one is to add the conversion of
SG-buffer handling as above.

The patches are created against the latest ALSA tree, and the last
patch won't be applicable fully to 2.6.26-rc6.  But, it's only for
snd-hda-intel and there is no PPC32 hardware supporting this, AFAIK.
So just ignore the reject.

The patches are found also on my git tree, dma-fix branch of
    git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6.git


Any comments and test reports are appreciated, especially about
dma_mmap_coherent() addition.


thanks,

Takashi