[alsa-devel] [PATCH 1/1] ASoC: Fix compilation error with davinci-sffsdr module

[Hugo Villeneuve]

On Thu, 15 Jan 2009 20:01:22 +0000
Mark Brown <broonie at sirena.org.uk> wrote:

> On Thu, Jan 15, 2009 at 02:54:54PM -0500, Hugo Villeneuve wrote:
> > Mark Brown <broonie at sirena.org.uk> wrote:
> 
> > > > The breakage I see when I run the aplay utility is this:
> 
> > > >   aplay: pcm_write:1394: write error: Input/output error
> 
> > > > davinci-git version is the latest as of january 14
> > > > (2.6.28-davinci1-06546-gcfb152b)
> 
> > > Hrm, OK.  That's not terribly informative - does the error get
> > > reported after about 10 seconds by any chance?  I suspect that DMA
> > > just isn't happening.
> 
> > Sorry about the non-verbosity :)
> 
> I actually meant the error message rather than your posting, sorry!

I know :)

In the meantime, I will send you a patch that will fix the compilation
problems for the SFFSDR ASoC module.

>  Yes it happens almost exactly after 10 seconds. I?m not an expert
> > with audio nor DMA, but can you indicate me where I should be
> > looking for signs of trouble (which source files for example)?
> 
> sound/soc/davinci/davinci-pcm.c and the underlying DMA APIs it
> calls.  I wouldn't be surprised if either there had been some change
> in the DMA APIs that required an update in the driver or the DMA APIs
> haven't been fully merged.
> 
> Hopefully a comparison of the mainline and DaVinci trees will show
> something...

Anyone on the DaVinci mailing list that could shed some light on this
issue?

Thank-you, Hugo.

---------------
Hugo Villeneuve
www.hugovil.com
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