snd_pcm_suspend_all(9)

📦 version 7.3.1, in nixpkgs unstable

okay so bestie, we're in the Kernel API Manual and the page is literally snd_pcm_suspend_all(9) — yes, the whole vibe is “trigger SUSPEND to all substreams in the given pcm.” Periodt. 💅

✨ NAME ✨

snd_pcm_suspend_all — trigger SUSPEND to all substreams in the given pcm 💤

🦋 SYNOPSIS 🦋

int snd_pcm_suspend_all (struct snd_pcm *pcm );

🎀 ARGUMENTS 🎀

  • pcm — the PCM instance. That's the thing you're handing over, bestie.

🌸 DESCRIPTION 🌸

Okay so here's the tea, no cap: it literally takes and releases pcm->open_mutex to serialize against concurrent open/close while walking the substreams. The way that it does the locking is very main character energy so the open/close girlies don't collide. 🫶

After this call, all streams are changed to SUSPENDED state. All of them. The whole squad is asleep. 😴✨

💖 RETURN 💖

  • Zero if successful (or pcm is NULL) — iconic, we love a clean success.
  • Or a negative error code — not the slay we wanted, but that's the return vibe.

🌈 SEE ALSO 🌈

Kernel file ./sound/core/pcm_native.c — that's the source-file bestie for this one. Also check out these absolute legends:

🎀 and that's the page, bestie. source/version: ./sound/core · date: October 2026 · go off and suspend responsibly 💅
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