snd_ac97_bus(9)

📦 version 7.3.1, in nixpkgs unstable

💅 snd_ac97_bus(9) — Kernel API Manual

okay so bestie, welcome to the glow-up era of the kernel API manual ✨ this one's all about snd_ac97_bus(9) — the bus-creating icon of the AC97 world. Let's get into it 💖

🌸 NAME 🌸

snd_ac97_bus — literally the function that creates an AC97 bus component. that's her whole job. main character energy fr 🎀

✨ SYNOPSIS ✨

int snd_ac97_bus (struct snd_card *card , int num , const struct
snd_ac97_bus_ops *ops , void *private_data , struct snd_ac97_bus **rbus
);

🦋 ARGUMENTS 🦋

  • card — the card instance 💳 like, the whole vibe she's attaching to.
  • num — the bus number 🔢 which bus are we talking about bestie.
  • ops — the bus callbacks table 📋 the whole rolodex of what this bus can do.
  • private_data — private data pointer for the new instance 🙈 her own little personal stash of data.
  • rbus — the pointer to store the new AC97 bus instance 👑 this is where the shiny new bus gets handed back to you.

🧚 DESCRIPTION 🧚

Creates an AC97 bus component. An struct snd_ac97_bus instance is newly allocated and initialized. no cap, she's brand new and fully set up 🌟

The ops table must include valid callbacks — at least read and write. The other callbacks, wait and reset, are not mandatory. so like, read and write are the non-negotiables, the rest are just bonus ✨

The clock is set to 48000. If another clock is needed, set (*rbus)->clock manually. yeah you heard me — 48000 is the default, but if that's not your vibe you gotta go in and change it yourself by hand 💅

also super important: the AC97 bus instance is registered as a low-level device, so you don't have to release it manually. the kernel handles that for you, she's got it 🫶 don't be doing extra work for no reason.

🔥 RETURN 🔥

Zero if successful, or a negative error code on failure. so 0 = slay ✅, anything negative = not slay 😭 and you should probably check it.

🌈 SEE ALSO 🌈

Kernel file ./sound/pci/ac97/ac97_codec.c, plus the whole friend group 👯‍♀️:

🎀 okay that's the whole page bestie, you ate that. this one lives in ./sound/pci/ac97, dated October 2026, and it's filed under snd_ac97_bus(9) — go be iconic with it 💜🦋
📦 where this page comes from