mei_pxp_component_match(9)

📦 version 7.3.1, in nixpkgs unstable

💅 mei_pxp_component_match(9) — like, the whole Kernel API Manual moment ✨

Okay bestie, so this is a page from the Kernel API Manual and it's literally about one tiny function that decides whether two components are, like, meant to be. It's called mei_pxp_component_match — and yes, that's the name, and yes, it's iconic.

🎀 NAME 🎀

mei_pxp_component_match — the compare function for matching mei pxp. That's it. That's the whole vibe. It compares stuff so the pxp can find its match. iykyk 💖

✨ SYNOPSIS ✨

int mei_pxp_component_match (struct device *dev , int subcomponent ,
       void *data );

Look at her. Three little args and a whole personality. 🦋

🌸 ARGUMENTS 🌸

  • dev — the master device. The main character, honestly. 👑
  • subcomponent — the subcomponent we're trying to match, and the page is very specific here: it's I915_COMPONENT_PXP. So if you're matching something else, bestie, wrong function. 🙈
  • data — the compare data, which is the mei pxp device. That's the other half of this whole matching situation. 💫

💜 DESCRIPTION 💜

So what does she actually do? The function checks three things, and it's giving very thorough, very "let me make sure before I ship you two":

  1. Is the driver i915? 👀
  2. Is the subcomponent PXP? 🎯
  3. Are the grand parent of pxp and the parent of i915 the same PCH device? 👯‍♀️

All three check out? Then you've got a match, no cap. The family tree has to line up — grand parent of pxp on one side, parent of i915 on the other, same PCH device. It's literally a genealogy check for kernel devices and I'm obsessed. 🧚

🔥 RETURN 🔥

  • 1 — if components match. Slay, they're compatible 💖
  • 0 — otherwise. It's not giving, move on 💀

🦋 SEE ALSO 🦋

Go read the kernel file ./drivers/misc/mei/pxp/mei_pxp.c (that's the source, bestie, go touch grass in the source tree 🌱), plus these absolute legends:

Also just a heads up: the return is 1 or 0. Not true/false, not a negative errno — 1 or 0. Don't @ me. 🫶

And that's the page, periodt. 🌈 For the record this all lives under ./drivers/misc/mei/pxp, dated October 2026 — so like, from the future, and still iconic. Byeee 👑✨💅

📦 where this page comes from