snd_hdac_get_sub_nodes(9)

📦 version 7.3.1, in nixpkgs unstable

🌸 snd_hdac_get_sub_nodes(9) 🌸

okay bestie, welcome to the Kernel API Manual 💖 this one's a lil function from the HDA core and honestly? it's giving "small but mighty." let's get into it ✨

✨ NAME ✨

snd_hdac_get_sub_nodes — literally just get the start NID and the number of subtree nodes 🎀

🦋 SYNOPSIS 🦋

int snd_hdac_get_sub_nodes (struct hdac_device *codec , hda_nid_t nid ,
       hda_nid_t *start_id );

like, that's the whole vibe. three args, one int back 💅

🎀 ARGUMENTS 🎀

  • codec — the codec object, aka the main character of this whole situation 👑
  • nid — the NID you wanna inspect 🔍
  • start_id — the pointer where the starting NID gets stored, so it's a lil out-param moment 🫶

💜 DESCRIPTION 💜

So it returns the number of subtree nodes — or zero if it's not found, no cap 😭 and like, heads up: this function reads parameters always without caching. fr fr, no cache, none, not even a lil one 🙈 so don't go expecting it to remember anything from last time.

🌈 SEE ALSO 🌈

Kernel file ./sound/hda/core/device.c — and the whole squad, honestly, they're all linked here so let's give them their moment 💖

🍓 bestie reminder: zero means not found, no caching happens, and start_id is where the starting NID lands. that's the whole tea. ☕

and that's a wrap, bestie!! 🧚 this lil page came from ./sound/hda/core and it's dated October 2026 ⭐ slay, go read some code, ily, bye 💅💖

📦 where this page comes from