drm_dp_mst_aux_for_parent(9)

📦 version 7.3.1, in nixpkgs unstable

💅 drm_dp_mst_aux_for_parent(9) 💅

okay bestie, so this is a page from the Kernel API Manual, and it's literally the whole glow-up guide for drm_dp_mst_aux_for_parent. it's short, it's sweet, it's giving "one job and it does it well" energy. let's get into it ✨

🌸 NAME 🌸

drm_dp_mst_aux_for_parent — grab the AUX device for an MST port's parent. that's it. that's the whole vibe. 🎀

🦋 SYNOPSIS 🦋

struct drm_dp_aux * drm_dp_mst_aux_for_parent (struct drm_dp_mst_port
*port );

like, you hand it a port, it hands you back a struct drm_dp_aux *. simple trade. iykyk 🫶

💖 ARGUMENTS 💖

  • port — the MST port whose parent's AUX device is being returned. that's the one thing you give it, bestie. no hidden extras, no surprise params, we love a low-maintenance function signature 👑

✨ DESCRIPTION ✨

so here's the tea: this function returns the AUX device for port's parent. 🧚

and if port's parent happens to be the root port? then you get NULL back. no parent AUX for you, bestie — the root port is the main character and it doesn't have a parent to point at. 💀

ngl that NULL case is the whole reason this helper exists, so don't come for it when it returns nothing. that's not a bug, that's the contract. 🙈

🔥 SEE ALSO 🔥

like yes that's a LOT of friends but they all belong to the same MST friend group, go read them too, they're iconic 💜

that's the whole page, bestie — short king energy, fully documented 🌈

kisses from the kernel ✨💖

this came from ./drivers/gpu/drm/display, dated October 2026, and it's a Kernel API Manual situation. mwah 💋🎀

📦 where this page comes from