snd_ctl_find_id(9)

✨ snd_ctl_find_id ✨

okay bestie, welcome to the snd_ctl_find_id(9) page — it's a kernel API manual and honestly? it's giving "small function, big main character energy" 💅

🌸 NAME 🌸

snd_ctl_find_id — find the control instance with the given id 💖

🦋 SYNOPSIS 🦋

struct snd_kcontrol * snd_ctl_find_id (struct snd_card *card , const
struct snd_ctl_elem_id *id );

🎀 ARGUMENTS 🎀

• card — the card instance, like, the whole vibe we're searching inside 🃏
• id — the id to search, aka the thing we're looking for fr fr 🔍

⭐ DESCRIPTION ⭐

So what does it do? It finds the control instance with the given id from the card. That's the whole gig. Iconic, minimal, ate. 👑

But bestie, listen — note that this function takes card->controls_rwlock lock internally. Like, it's grabbing that lock on its own, no cap. So don't be out here surprised about locking, iykyk 🙈

💜 RETURN 💜

The pointer of the instance if found, or NULL if not. That's it! Found → cute pointer. Not found → NULL and you gotta deal with it 😭

🌈 SEE ALSO 🌈

Kernel file ./sound/core/control.c and the whole friend group: snd_ctl_notify(9), snd_ctl_notify_one(9), snd_ctl_new(9), snd_ctl_new1(9), snd_ctl_free_one(9), snd_ctl_add(9), snd_ctl_replace(9), snd_ctl_remove(9), snd_ctl_remove_id(9), snd_ctl_remove_user_ctl(9), snd_ctl_activate_id(9), snd_ctl_rename_id(9), snd_ctl_rename(9), snd_ctl_find_numid(9), snd_ctl_register_ioctl(9), snd_ctl_register_ioctl_compat(9), snd_ctl_unregister_ioctl(9), snd_ctl_unregister_ioctl_compat(9), snd_ctl_request_layer(9), snd_ctl_register_layer(9), snd_ctl_disconnect_layer(9), snd_ctl_boolean_mono_info(9), snd_ctl_boolean_stereo_info(9), snd_ctl_enum_info(9) ✨

okay that's the whole page, go forth and find your control instances 🫶

signing off from ./sound/core, dated October 2026, this was snd_ctl_find_id(9) — mwah, slay, bye 💋🎀