On Thu, Aug 03, 2023 at 10:22:07PM +0300, Marian Postevca wrote: Please fix your mail client to word wrap within paragraphs at something substantially less than 80 columns. Doing this makes your messages much easier to read and reply to. > I'm no expert in runtime power management (though I did read a bit on > it), so I don't understand all the things that happen underneath, but > one thing that is not clear to me is who's supposed to mark activity > on this device and keep it from entering autosuspend if the user wants > to play some sound? Shouldn't there be some counterpart that calls > pm_runtime_mark_last_busy() ? I looked through the code and can't > find who's calling pm_runtime_mark_last_busy(). The core will hold devices out of suspend through a combination of DAPM and PCMs being held open, it just does get and puts rather than making an effort to use autosuspend delays. See the calls to pm_runtime_get_sync() in the core.
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