Re: [PATCH v27 17/17] ALSA: virtio: preserve playback progress across pause and buffer access

[sashiko-bot@kernel.org]

> TX completions can arrive after PAUSE closes transfer admission.
> Preserve that progress and schedule catch-up when the stream resumes or
> a rejected pause restores RUNNING. Cache device latency in stream-owned
> state so a late completion does not need to dereference the ALSA
> runtime. Clear both the cache and runtime delay on prepare and before
> RESET observes the hardware pointer.
> 
> A playback pointer callback can also invoke ACK while the core has
> closed buffer-access admission, after the pointer helper has already
> accounted for completed hardware bytes. Track that callback context and
> refill only previously committed data using pcm_indirect.appl_ptr. Keep
> rejecting other ACKs while the gate is closed, and use the
> explicit-pointer helper from patch 16 for the refill. If
> runtime->control is absent, route the condition through the common
> playback validator and XRUN error path rather than returning before
> [ ... ]
> audio were not tested. The tree through patch 15 was inspected but was
> not run as a separate control. Full-series runtime is not claimed here.
> 
> Assisted-by: LLM
> Signed-off-by: Joonho Lee <mynameisjune111@gmail.com>

Sashiko has reviewed this patch and found no issues.

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Sashiko AI review · https://sashiko.dev/#/patchset/20261112004704.49758-1-mynameisjune111@gmail.com?part=17