[alsa-devel] [PATCH] ALSA: PCM: check if ops are defined before suspending PCM

[Mark Brown]

On Mon, Feb 11, 2019 at 10:59:49AM -0600, Pierre-Louis Bossart wrote:

> Can't disagree, we were surprised to hit this issue knowing that the SOF
> code isn't the first to use DPCM at all (same with some topology issues).
> It's very likely that there are specific initialization flows that aren't
> quite right, hopefully we'll fix them one after the other :-)

I'm fairly sure that DPCM has only been tested in very restricted use
cases, and then mostly at the system level rather than directly.
Obviously long term the component refactoring and digital domains should
improve matters here but that's going to take a while :(
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