pci_find_bus(9)

🌸 NAME 🌸

pci_find_bus — locate PCI bus from a given domain and bus number. This one lives in the Kernel API Manual, and the page itself is pci_find_bus(9), iykyk 💅.

🦋 SYNOPSIS 🦋

struct pci_bus * pci_find_bus (int domain , int busnr );

🎀 ARGUMENTS 🎀

• domain — number of PCI domain to search. That's the domain you're looking in, bestie.
• busnr — number of desired PCI bus. Yep, the bus number you actually want.

💖 DESCRIPTION 💖

Okay so picture this: you give it a PCI bus number and a domain number, and it goes looking for the desired PCI bus in the global list of PCI buses. If the bus is found, you get a pointer to its data structure back — slay. If no bus is found, it returns NULL — no cap, that's the no-bus answer. 🙈

🌈 SEE ALSO 🌈

Kernel file ./drivers/pci/search.c — and the related function besties are:

• pci_find_next_bus(9)
• pci_get_slot(9)
• pci_get_domain_bus_and_slot(9)
• pci_get_subsys(9)
• pci_get_device(9)
• pci_get_class(9)
• pci_get_base_class(9)
• pci_dev_present(9)

Source/version: ./drivers/pci · Date: October 2026 — ok that's the whole page, bye bestie, this was pci_find_bus(9) 💅✨