usb4_port_re...inbound_sbtx(9)

📦 version 7.3.1, in nixpkgs unstable

🎀 usb4_port_retimer_unset_inbound_sbtx(9) 🎀

okay bestie, welcome to the Kernel API Manual — yes, we're in the (9) section, that's the kernel-internals section, very serious, very demure, very "I read source code for fun" 💅

🌸 NAME 🌸

usb4_port_retimer_unset_inbound_sbtx — disable sideband channel transactions ✨

Like, that's the whole vibe. It turns the thing off. The reverse-of-the-other-thing energy. You're gonna love it.

🦋 SYNOPSIS 🦋

int usb4_port_retimer_unset_inbound_sbtx (struct tb_port *port , u8
index );

that's it. that's the function. she's not complicated, she's just doing her job 🫶

🍓 ARGUMENTS 🍓

  • port — a USB4 port, aka the struct tb_port * you're pointing at. bestie. the port. you know the one.
  • index — the retimer index, a lil u8 telling us which retimer we're talking about 🔥

✨ DESCRIPTION ✨

so basically: this disables sideband channel transactions on SBTX.

and if you're sitting there like "wait, what does that mean" — same, but the manpage says it's the reverse of usb4_port_retimer_set_inbound_sbtx, and honestly that's the most helpful sentence in the whole page. one sets it, one unsets it. iconic symmetry. the way that set/unset pair serves cunt 💅

no cap, this is literally just the undo button for usb4_port_retimer_set_inbound_sbtx. periodt.

💜 RETURN 💜

  • 0 — success, we ate, we slayed, everyone clapped 🎉
  • negative errno — otherwise 😭 something went wrong and the kernel is telling you in negative-errno-speak

🌈 SEE ALSO 🌈

alright, buckle up buttercup, this is the long part — the whole friend group, all of them tagged (9), all of them living in the kernel file ./drivers/thunderbolt/usb4.c:

that's seventy-something functions, bestie, and every single one of them is in ./drivers/thunderbolt/usb4.c. iykyk 💀

and that's the page!! tysm for reading, mwah 🫶

signed, sealed, delivered by ./drivers/thunderbolt — October 2026 edition ⭐🧚💖

📦 where this page comes from