[alsa-devel] [PATCH 1/3] ALSA: pxa: slightly refactor reset handling

Mark Brown broonie at kernel.org
Fri Oct 18 02:19:37 CEST 2013

On Fri, Oct 18, 2013 at 03:53:31AM +0400, Dmitry Eremin-Solenikov wrote:

> Maybe it was some coincidence/whatever. Maybe it is some hardware issue
> of exact mask version. When I first started hacking around PXA, it was known
> that tosa sometimes does not reset the AC97 codec for the first time.
> However it looks like nobody bothered to debug that, because in most (~3/4)
> cases reset went through. Now some kernel changes made kernel hang
> looping in the interrupt, if the reset is not properly handled.

Ah, now you mention that extra detail I do recall Wolfson CODEC drivers
with suspicious extra resets - probably this issue was why.
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