pci_reset_bus(9)

📦 version 7.3.1, in nixpkgs unstable

💅 pci_reset_bus — Kernel API Manual, bestie edition 🎀

okay so you're in the pci_reset_bus(9) page, which is the Linux kernel API manual (that's the manual name, iykyk), and honestly? This one is short and spicy and I'm obsessed. Let's go.

✨ NAME ✨

pci_reset_bus — literally just: try to reset a PCI bus. That's the whole vibe. 🦋

🌈 SYNOPSIS 🌈

int pci_reset_bus (struct pci_dev *pdev );

bestie it's one function, one arg, one int coming back at you. Not me being emotional about it. 😭

💖 ARGUMENTS 💖

  • pdev — the top level PCI device you wanna reset via slot/bus. Like, the main character device of the group, not a random NPC down the bus. 👑

🫶 DESCRIPTION 🫶

So this one says "Same as above" (yes, the manpage really says that, I'm not making it up 🙈) — except it returns -EAGAIN if the bus cannot be locked. That's the whole twist. If the lock isn't happening, you get -EAGAIN back, no cap. 🔥

ngl, -EAGAIN here means "couldn't grab the bus lock, try again later" — that's the note, don't come for me, that's what the page says. 💀

👑 SEE ALSO 👑

Kernel file ./drivers/pci/pci.c — and then, bestie, the friend group is huge. Every single one of these shows up to the party:

Like I said. Huge friend group. 💜

and that's the whole page, bestie — slay 💅✨

This one's from the ./drivers/pci source (version vibes, October 2026 🍓) — go touch a bus, reset it, be iconic. 🧚‍♀️⭐

📦 where this page comes from