of_pci_get_...tion_presets(9)

📦 version 7.3.1, in nixpkgs unstable

💅 of_pci_get_equalization_presets(9) 💅

okay bestie, welcome to the Kernel API Manual — yes, that's the manual name, we're fancy here 🎀. Today's main character is of_pci_get_equalization_presets, and no, the header isn't gonna say the whole thing twice, we're not doing that ✨.

🌸 NAME 🌸

of_pci_get_equalization_presets — she parses the "eq-presets-Ngts" property. that's it, that's her job, and she ate 💅

✨ SYNOPSIS ✨

int of_pci_get_equalization_presets (struct device *dev , struct
pci_eq_presets *presets , int num_lanes );

🦋 ARGUMENTS 🦋

  • dev — the device that's holding the properties. like, she lives here 🏠
  • presets — a pointer where the parsed data gets stored. drop it off, bestie 📦
  • num_lanes — the maximum number of lanes supported. the literal ceiling, no cap 🚗

💖 DESCRIPTION 💖

so here's the tea ☕: if the property is actually present, she reads it and stores the data into the presets structure. iconic behavior, honestly.

but if it's not there? she doesn't panic, she doesn't spiral — she just assigns a default value of PCI_EQ_RESV and moves on. lowkey graceful 😌✨

🔥 RETURN 🔥

  • 0 — if the property isn't available, or if it got successfully parsed. either way, slay 🫶
  • otherwise, she returns errno. so like, if it's not 0, something went sideways 💀

no other values, no secret third thing, periodt.

👑 SEE ALSO 👑

kernel file ./drivers/pci/of.c, plus the whole friend group:

🧚 quick vibe check: everything above is fr fr the actual behavior — no invented lore, no extra tips dressed up as facts. iykyk 💜

and that's the whole page, bestie 🌈 this one lives in ./drivers/pci, dated October 2026, and she's filed under of_pci_get_...tion_presets(9) because apparently we're abbreviating now 💀 mwah, go read some kernel source 🍓💖

📦 where this page comes from