pci_pwrctrl_create_devices(9)

📦 version 7.3.1, in nixpkgs unstable

💅 pci_pwrctrl_create_devices(9)

okay bestie so this is a page straight out of the Kernel API Manual, and it's lowkey about building device tree stuff for PCI power control. stay with me, it's actually slay once you get it ✨

🎀 NAME 🎀

pci_pwrctrl_create_devices — the function that creates pwrctrl devices. that's it, that's the vibe 💖

🦋 SYNOPSIS 🦋

int pci_pwrctrl_create_devices (struct device *parent );

literally the whole signature, no cap.

🌸 ARGUMENTS 🌸

  • parent — the PCI host controller device 👑 like, the parent of everything we're about to build, iykyk

✨ DESCRIPTION ✨

okay so this one recursively creates pwrctrl devices for the devicetree hierarchy sitting below the PCI host controller you pass in — and when we say recursively, we mean it does it in a depth first manner, going down and down and down before coming back up. very main character energy 🌈

and bestie listen — on error, all the created devices will be destroyed. everything we just made? gone. accountability, periodt 😭

🔥 RETURN 🔥

  • 0 on success — we ate 👑
  • a negative error number on error — not the vibe 💀

💜 SEE ALSO 💜

Kernel file ./drivers/pci/pwrctrl/core.c plus the whole bestie lineup:

🫶 that's the page!! this little gem lives in ./drivers/pci/pwrctrl and it's dated October 2026 — go forth and create devices responsibly, bestie 💅⭐💖

📦 where this page comes from