"DSP panic" when ALSA XRUN recovery

[xiulipan]

When ALSA detect a xrun, a stop/start pattern for the recovery is send to firmware. This pattern is not supported now and will cause the DSP to have some error.

[lgirdwood]

Please detail the trace logs when this happens in both FW and driver.

[tlauda]

Please provide dmesg log from driver.

[xiulipan]

@tlauda
The reproduce steps are easy:

1. aplay on one PCM eg. PCM 0 on CARD0
2. inject a alas XRUN or wait for one to happen (may take long time on UP2 and always happen on GP)
   echo 1 > /proc/asound/card0/pcm0p/sub0/xrun_injection
   This may need CONFIG_SND_PCM_XRUN_DEBUG=y in config

[tlauda]

@xiulipan
Actually one more question. What do you mean by saying that xrun always happens on GP? I didn't hear about such issue.