tb_port_unlock(9)

📦 version 7.3.1, in nixpkgs unstable

💅 tb_port_unlock — Kernel API Manual, bestie edition 🎀

okay so this is the man page for tb_port_unlock(9) — yes the (9) means kernel API territory, we're in the big leagues now ✨

✨ NAME ✨

tb_port_unlock — unlock the downstream port, periodt 🔓

🦋 SYNOPSIS 🦋

int tb_port_unlock (struct tb_port *port );

🌸 ARGUMENTS 🌸

  • port — the port you want to unlock, bestie. that's it, that's the whole argument 💖

💫 DESCRIPTION 💫

So here's the tea: this one is needed for USB4, but ngl you can call it for any CIO/USB4 ports — no gatekeeping here 🫶

What it actually does is make the downstream router accessible for CM. that's the whole vibe. iconic, lowkey 🔥

🌈 RETURN 🌈

  • 0 on success — slay 💅
  • a negative errno otherwise — not slay 😭

👑 SEE ALSO 👑

the kernel file is ./drivers/thunderbolt/switch.c, and honestly the whole friend group is here, so let's do the roll call 🎀

and that's the whole page, no notes 💜

this lil masterpiece lives in ./drivers/thunderbolt, dated October 2026, and it's the tb_port_unlock(9) page from the Kernel API Manual — go unlock that downstream port bestie, you got this 🧚⭐🍓

📦 where this page comes from