snd_device_new(9)

✨ snd_device_new ✨

okay so bestie, welcome to the snd_device_new(9) page from the Kernel API Manual — yes we're reading kernel manpages together now, this is our era 💅

🎀 NAME 🎀

snd_device_new — create an ALSA device component 🦋

🌸 SYNOPSIS 🌸

int snd_device_new (struct snd_card *card , enum snd_device_type type ,
void *device_data , const struct snd_device_ops *ops );

🍓 ARGUMENTS 🍓

• card — the card instance 🫶 literally the card this whole thing belongs to
• type — the device type, SNDRV_DEV_XXX
• device_data — the data pointer of this device
• ops — the operator table (the vibes table, the behaviour table, iconic either way 👑

💖 DESCRIPTION 💖

So what this does: it creates a brand-new device component for the data pointer you hand it. The device gets assigned to the card, and the card manages it together with everything else it's holding — like the card is the group chat admin and your new device just got added 🎀

And here's the part you cannot skip, bestie: the data pointer lowkey doubles as the identifier too. So the pointer address must be unique and unchanged. Not "probably", not "mostly" — unique. And unchanged. Fr fr, do not be out here mutating or recycling that pointer, that's not the vibe 💀

⭐ RETURN ⭐

Zero if it worked 🎉 — or a negative error code if it didn't 😭

🌈 SEE ALSO 🌈

Kernel file ./sound/core/device.c plus the besties: snd_device_disconnect(9), snd_device_free(9), snd_device_register(9) — go read those next, iykyk 🔥

okay and the little sign-off: this whole thing lives under ./sound/core, it's the October 2026 edition, shipped with the Kernel API Manual, and yes — it's snd_device_new(9), the main character of this page 👑✨ go create some devices responsibly 🧚💜