Context expectations in ALSA

[Jaroslav Kysela]

Dne 22. 10. 20 v 11:50 Maxime Ripard napsal(a):

> So, I'm not really sure what I'm supposed to do here. The drivers
> involved don't appear to be doing anything extraordinary, but the issues
> lockdep report are definitely valid too. What are the expectations in
> terms of context from ALSA when running the callbacks, and how can we
> fix it?

I think that you should set the non-atomic flag and wake up the workqueue or
so from interrupt handler in this case. Call snd_pcm_period_elapsed() from the
workqueue not the interrupt handler context.

						Jaroslav

-- 
Jaroslav Kysela <perex at perex.cz>
Linux Sound Maintainer; ALSA Project; Red Hat, Inc.