snd_ctl_unr...ioctl_compat(9)

💖 NAME 💖

snd_ctl_unregister_ioctl_compat — okay so this is the one that de-registers the device-specific compat 32bit control-ioctls. Basically it's the undo button for compat ioctl registration, bestie. ✨

This is a page straight out of the Kernel API Manual, so you already know we're in the big leagues. 👑

🦋 SYNOPSIS 🦋

int snd_ctl_unregister_ioctl_compat (snd_kctl_ioctl_func_t fcn );

🌸 ARGUMENTS 🌸

• fcn — the ioctl callback function you wanna unregister. Like, hand over the exact function you registered before, that's the whole vibe. 🫶

⭐ RETURN ⭐

Returns zero if it went off without a hitch, or a negative error code if it did not slay. 😭

Fr fr, negative error code = something went sideways, so check it, don't just ignore it. 💀

🎀 SEE ALSO 🎀

The kernel file is ./sound/core/control.c — that's where the magic lives, iykyk. 👀 And here's the whole friend group of related calls, in order:

• 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_find_id(9)
• snd_ctl_register_ioctl(9)
• snd_ctl_register_ioctl_compat(9)
• snd_ctl_unregister_ioctl(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)

That's the whole page, bestie — go forth and unregister responsibly. 💅

Signed, sealed, delivered from ./sound/core, dated October 2026. 🎀✨