On Thu, Oct 22, 2020 at 12:03:19PM +0200, Jaroslav Kysela wrote: > 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. Yeah, that was my first guess too. However, the DMA driver uses some kind of generic helpers using a tasklet, so getting rid of it would take some work and would very likely not be eligible for stable. Maxime
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