Re: Problem with ALSA in 2.6.14-omap2 on OSK

[Dirk Behme <dirk.behme@de.bosch.com>]

Daniel Petrini wrote:
> Hi Dirk,
> 
> On 11/27/05, Dirk Behme <dirk.behme@de.bosch.com> wrote:
> 
>>Tony Lindgren wrote:
>>
>>>* Menon, Nishanth <x0nishan@ti.com> [051123 08:37]:
>>>
>>>
>>>>There is further the fix to L/R sync issue as reported by Ajaya Babu in
>>>>a previous mail in this list for the OSS - it might hit the ALSA too if
>>>>the condition is not met properly.
>>>
>>>
>>>To me it sounds like Ajaya Babu's fix to stop mcbsp before dma is
>>>enabled probably fixes the remaining problems.
>>>
>>>Does anybody have a tested patch for OSS and Alsa for that?
>>
>>In the attachment a patch for Alsa as described by Ajaya Babu (hopefully
>>correct?). Unfortunately it seems to not fix the issues with repeated
>>audio parts while using Alsa.
> 
> 
> I tested it and it worked fine here, with version omap-2.6.15-rc4
> (without rollbacks in dma.c).

Thanks for testing! Seems strange to me why Yves and I have these
glitches, and you not. As you can see by my L/R patch posted to the
list, I switched back to OSS.

Some notes to my environment. I'm using ~5MB mp3 playing over NFS with
madplay in ramdisk. Yesterday, I had an additional idea, but no time to
test it yet: Do you have PREEMPT (CONFIG_PREEMPT=y) enabled? May be this 
is the difference?

Dirk