On Tue, Sep 20, 2022 at 11:45:45AM +0800, Jason Zhu wrote:

> Sometimes we need to make some dais alive when close the card, like
> VAD, so these functions must be exported so that they can be called.

I'm not sure I fully understand the use case here - why wouldn't
the core know about the audio stream being kept active?  For
something like VAD I'd expect this to be just working like a
normal audio path, if there's a DSP consuming the audio stream
then it'll keep everything open.  If there is a good use case I
suspect it'll be clearer if you send the users along with this
patch.