ib_unregister_device(9)

📦 version 7.3.1, in nixpkgs unstable

💅 ib_unregister_device(9) 💅

okay so bestie, we're in the Kernel API Manual today and this page is literally about saying bye to an IB device 👋✨

🎀 NAME 🎀

ib_unregister_device — unregister an IB device (yes that's the whole vibe, she's a one-liner and she ate 💅)

✨ SYNOPSIS ✨

void ib_unregister_device (struct ib_device *ib_dev );

like, that's it. one function. no return value. she just does the thing 🫶

🌸 ARGUMENTS 🌸

  • ib_dev — the device you're unregistering, aka the one getting the goodbye kiss 😭💖

🦋 DESCRIPTION 🦋

So you want to unregister an IB device. Iconic. Here's the tea:

Unregister an IB device. All clients will receive a remove callback. every single one of them, no cap, they all get notified 📣

⚠️ bestie listen to me: callers should call this routine only once, and protect against races with registration. one time. periodt. and do the race protection, please, i'm begging 🙏

Typically it should only be called as part of a remove callback in an implementation of driver core's struct device_driver and related. that's the main character usage right there 👑

And the spicy part 🌶️ — if ops.dealloc_driver is used then ib_dev will be freed upon return from this function. like, she's gone gone. don't touch her after this. not even a little. 💀

🔥 SEE ALSO 🔥

the whole friend group showed up fr fr, look at this roster:

and the source file lives at ./drivers/infiniband/core/device.c — go read her, she's giving main character energy 📖💜

🌈 mwah 💋 this page came from ./drivers/infiniband/core, dated October 2026, and she's filed under ib_unregister_device(9). that's the whole glow-up, love u, bye 🎀🫶✨

📦 where this page comes from