snd_ctl_notify_one(9)

📦 version 7.3.1, in nixpkgs unstable

💖 snd_ctl_notify_one(9) 💖

okay so bestie, welcome to the Kernel API Manual page for snd_ctl_notify_one — yes that's the manual name, we're in the kernel-API section, put your seatbelt on 🎀

✨ NAME ✨

snd_ctl_notify_one — the function that sends a notification to user-space when a control changes 🦋

⭐ SYNOPSIS ⭐

void snd_ctl_notify_one (struct snd_card *card , unsigned int mask ,
       struct snd_kcontrol *kctl , unsigned int ioff );

like... it returns void, it takes four args, that's the whole vibe 💅

🌸 ARGUMENTS 🌸

  • card — the card that's getting the notification, she's the main character here 👑
  • mask — the event mask, and it's one of the SNDRV_CTL_EVENT_* family (iykyk)
  • kctl — the pointer carrying the control instance, hold onto her 🫶
  • ioff — the additional offset applied to the control index, little bonus number energy ✨

💜 DESCRIPTION 💜

So what does she actually do? snd_ctl_notify_one calls snd_ctl_notify, and then on top of that it does the extra little jobs — like LED state changes 🔥 basically the notification plus the side quests, no cap.

🦋 SEE ALSO 🦋

Kernel file ./sound/core/control.c, plus the whole friend group:

and that's the page, bestie, we ate 🍓 this one lives in ./sound/core and it's dated October 2026 — go forth and notify responsibly, mwah 💋🌈

📦 where this page comes from