On Sun, 27 Dec 2020 19:03:28 +0100, Jaroslav Kysela wrote: > > Dne 22. 12. 20 v 12:59 Ravulapati Vishnu vardhan rao napsal(a): > > When we try to play and capture simultaneously we see that > > interrupts are genrated but our handler is not being acknowledged, > > After investigating further more in detail on this issue we found > > that IRQ delivery via MSI from the ACP IP is unreliable and so sometimes > > interrupt generated will not be acknowledged so MSI model shouldn't be used > > and using legacy IRQs will resolve interrupt handling issue. > > What is the real culprit? It's hw bug? If not, it would be better to fix the > PCI code or the irq handler. I'm not surprised if it's a hardware "feature". There are lots of deny list and quirks about disabling MSI in HD-audio controller code, after all. Takashi
