20 Oct
2015
20 Oct
'15
4:01 p.m.
[...]
I've tested this series with xrun injection and some modifications to the DMA driver to always trigger the race condition when the stream is stopped. And I've not seen any issues after the transfer re-started. (There is a dead-lock condition though but that does not seem to be related to this series)
Turns out that was a bug in the DMA driver that caused snd_pcm_period_elapsed() to be called on the TRIGGER_START path. So the ALSA side seems to be good.