tb_switch_find_cap(9)

📦 version 7.3.1, in nixpkgs unstable

💅 tb_switch_find_cap(9) — Kernel API Manual, bestie edition 🦋

okay so this is a page from the Kernel API Manual, and it's literally all about tb_switch_find_cap — a Thunderbolt girlie's best friend. No cap, she's here to hunt down a capability for you. Let's get into it ✨

🌸 NAME 🌸

tb_switch_find_cap — Find switch capability

like, she finds the capability. that's the whole vibe. main character energy fr fr 💅

🎀 SYNOPSIS 🎀

int tb_switch_find_cap (struct tb_switch *sw , enum tb_switch_cap cap );

yes bestie, that's the exact signature — copy it character for character, don't be out here improvising 🙈

✨ ARGUMENTS ✨

  • sw — the switch you wanna find the capability for 🫶 like, this is the girl you're investigating
  • cap — the capability you're looking for 👀 the thing you're tryna locate, iykyk

💖 RETURN 💖

the way this function gives you options... let's break it down:

  • Offset to the start of capability — on success 💅 slay, you found it, it's giving victory
  • -ENOENT — if no such capability was found 😭 like she looked and it's just not there, tragic
  • Negative errno — another error occurred 💀 so something else went wrong, not the not-found kind, a whole different situation
no cap, check your return values bestie — -ENOENT is not the same as "some other negative errno," and mixing them up is highkey a mess 🌈

🧚 SEE ALSO 🧚

all the sister functions, we stan a connected ecosystem 🔥

and that's the whole page, bestie — go find those capabilities 💜

sign-off time 🎀 this one's from the ./drivers/thunderbolt source, dated October 2026, and yeah — the page name is tb_switch_find_cap(9) in case you forgot already lol 🦋 ✨

📦 where this page comes from