snd_hdac_power_down_pm(9)

📦 version 7.3.1, in nixpkgs unstable

✨ snd_hdac_power_down_pm ✨

okay bestie, welcome to the Kernel API Manual 💅 today's main character is snd_hdac_power_down_pm(9) — the little guy whose whole job is powering down the codec. yes, that codec. slay.

🎀 NAME 🎀

snd_hdac_power_down_pm — power down the codec

like, literally that. it puts the codec to sleep. nap time, icon behavior 😴✨

🦋 SYNOPSIS 🦋

int snd_hdac_power_down_pm (struct hdac_device *codec );

🌸 ARGUMENTS 🌸

  • codec — the codec object 💖 that's the whole argument, that's the vibe. it's the thing getting powered down.

💫 DESCRIPTION 💫

okay so listen 🫶 like snd_hdac_power_up_pm, this function is used in a recursive code path — think init code, the kind of thing that PM suspend/resume might call again. so yeah, it's living in the recursive part of town and it knows it. recursive path queens, we stan 💅

it returns zero if it worked (slay ✨), or a negative error code (oop 🙈). that's the whole return contract, no cap.

👑 SEE ALSO 👑

Kernel file ./sound/hda/core/device.c, plus the whole friend group — go say hi:

fr fr read the whole list, bestie. your future self debugging at 3am will thank you 💀💖

anyway that's the page!! this one lives in ./sound/hda/core, it's the October 2026 edition, and it is, of course, snd_hdac_power_down_pm(9) — icon, legend, the moment 🌈⭐ go power something down responsibly 🧚💜

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