_ctl_diag_unregister(9)

📦 version 7.3.1, in nixpkgs unstable

🎀 _ctl_diag_unregister (section 9)

okay so first things first: yes bestie, this is a section 9 page — kernel API territory, the fancy part of the manual, _ctl_diag_unregister(9), and we're gonna get through it together 💖

✨ NAME ✨

_ctl_diag_unregister — application unregister with driver

like, the app is packing its bags and telling the driver "I'm out" 🫶

🌸 SYNOPSIS 🌸

long _ctl_diag_unregister (struct MPT3SAS_ADAPTER *ioc , void __user
*arg );

one function, two args, returns a long. that's the whole vibe check ✨

🦋 ARGUMENTS 🦋

  • ioc — the per adapter object 💜 this is your adapter's little passport, the object that represents that specific adapter.
  • arg — a user space buffer that's holding the ioctl content 👀 so it's stuff coming at us from userspace, keep that in mind fr fr.

🔥 DESCRIPTION 🔥

okay so what does it actually do: this will allow the driver to cleanup any memory allocated for diag messages 🧹 and to free up any resources 🫶

that's it. that's the whole job. memory cleanup + resource freeing. lowkey iconic of it to keep things tidy 💅 no leaks, no mess, we love to see it.

💀 SEE ALSO 💀

buckle up bestie, this list is long — like a group chat that never ends 😭 and the very first thing it points you at is a whole kernel file:

  • Kernel file ./drivers/scsi/mpt3sas/mpt3sas_ctl.c

and then the whole extended friend group:

like I said. whole extended friend group. read them all, iykyk 👑🌈

ngl if you got to the bottom of that SEE ALSO list you deserve a lil treat 🍓 go get one.

and that's the page bestie!! if you ever forget where this came from, it lives in ./drivers/scsi/mpt3sas, and this edition is dated October 2026 — so go ahead and cite it, main character energy only 👑💖 slay ✨ periodt.

📦 where this page comes from