[alsa-devel] [PATCH v2] ASoC: fsl_ssi: Fix channel swap on playback start

[Nicolin Chen]

On Tue, Apr 04, 2017 at 12:05:57AM +0200, Arnaud Mouiche wrote:

> The Patch break something. I'm not even able to to make two
> consecutives 'aplay' in order to generate something correct  on the
> external SSI bus.
> - boot
> - aplay -D hw:1,0 -r 48000 -c 2 -f S16_LE /dev/urandom
> Playing raw data '/dev/urandom' : Signed 16 bit Little Endian, Rate
> 48000 Hz, Stereo
> ^CAborted by signal Interrupt...
> 
> => ok
> 
> - aplay -D hw:1,0 -r 48000 -c 2 -f S16_LE /dev/urandom
> Playing raw data '/dev/urandom' : Signed 16 bit Little Endian, Rate
> 48000 Hz, Stereo
> aplay: pcm_write:1702: write error: Input/output error
> 
> => no clock on external bus.

It's probably because of the nr_active_streams and keep_active in
the fsl_ssi_config() are not working correctly any more since the
TE abd RE are always set -- wondering why Fabio and Max don't see
any problem; is there any diff between vanilla and -next?