virtsnd_pcm_parse_cfg(9)

✨ NAME ✨

virtsnd_pcm_parse_cfg — ok so this is the one that parses the stream configuration 💅 yes bestie, that's literally the whole gig

(this is a section 9 page from the Kernel API Manual, btw, in case the header vibe check matters 🎀)

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🦋 SYNOPSIS 🦋

int virtsnd_pcm_parse_cfg(struct virtio_snd *snd);

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🌸 ARGUMENTS 🌸

• snd — your VirtIO sound device 🎧 that's the struct getting handed over, no cap

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💖 DESCRIPTION 💖

So the way this works: this function gets called during initial device initialization ✨ like, the device is just waking up, putting its hair in a claw clip, and this is one of the first things that happens to it 🫶

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🧚 CONTEXT 🧚

Any context that permits to sleep 😴 — that's the vibe requirement, and it's the only requirement. Slay.

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🔥 RETURN 🔥

• 0 on success 💚 periodt
• -errno on failure 😭 (yes, that's the actual thing it gives you back, a negative errno)

ngl if you get the -errno one, something went sideways — don't ignore it 🙈

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👑 SEE ALSO 👑

Kernel file ./sound/virtio/virtio_pcm.c — that's where the main character lives 💀

• virtsnd_pcm_build_hw(9)
• virtsnd_pcm_find(9)
• virtsnd_pcm_find_or_create(9)
• virtsnd_pcm_validate(9)
• virtsnd_pcm_period_elapsed(9)
• virtsnd_pcm_build_devs(9)
• virtsnd_pcm_event(9)

go read those too, iykyk 🌈

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⭐ okay that's the whole page bestie 🎀 shoutout to the source tree over at ./sound/virtio and to October 2026 for the timestamp — historic, iconic, no notes 💜🌷