Re: [PATCH] ASoC: amd:Replacing MSI with Legacy IRQ model

From: Jaroslav Kysela
Date: Sun Dec 27 2020 - 13:17:57 EST


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.

Jaroslav

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