Re: [PATCH v32 02/20] ALSA: pcm: report partial progress under the stream lock

[sashiko-bot@kernel.org]

> From: Joonho Lee <mynameisjune111@gmail.com>
> 
> Allow a driver to publish subperiod progress under the PCM stream lock
> without generating a period timer notification. Use the ordinary pointer
> update, XRUN and wakeup path. Capture DRAINING can publish its final
> tail while playback and other inactive states retain their existing
> behavior.
> 
> Handle capture DRAINING separately in the state update: a full buffer is
> still readable capture data, while progress beyond the buffer capacity
> is an overrun. Playback continues to finish draining when its buffer is
> empty.
> 
> Refresh capture availability after the unlocked copy and application
> pointer commit while DRAINING. A final tail can arrive during the copy;
> subtracting only the copied frames from the earlier snapshot can
> otherwise finish draining with unread samples left in the ring.
> 
> Assisted-by: LLM
> Signed-off-by: Joonho Lee <mynameisjune111@gmail.com>

Sashiko has reviewed this patch and found no issues.

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