pci_get_slot(9)

🌸 NAME 🌸

Hii bestie! 💖 You're looking at the pci_get_slot(9) page from the Kernel API Manual, and the whole vibe is: locate the PCI device for a given PCI slot. That's the mission, no cap. ✨

• pci_get_slot — locate PCI device for a given PCI slot 🎀

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🛠️ SYNOPSIS 🛠️

Okay so the signature is giving "kernel function, but make it official" 💅:

struct pci_dev * pci_get_slot (struct pci_bus *bus , unsigned int devfn
);

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🎀 ARGUMENTS 🎀

• bus — the PCI bus on which the desired PCI device resides. That's the hangout spot. 🦋
• devfn — encodes the number of the PCI slot in which the desired PCI device resides, plus the logical device number within that slot in case of multi-function devices. It's doing double duty, highkey iconic. 👑

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🔥 DESCRIPTION 🔥

Okay so here's the tea: given a PCI bus and slot/function number, the desired PCI device is located in the list of PCI devices. 🕵️‍♀️✨

If the device is found, its reference count is increased and this function returns a pointer to its data structure. Slay, but also responsibility. 💖

🚨 Real talk, bestie: the caller must decrement the reference count by calling pci_dev_put. Do not forget this part, fr fr. 🙈

If no device is found, NULL is returned. That's the whole mood. 😭

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🌈 SEE ALSO 🌈

• Kernel file ./drivers/pci/search.c 📁
• pci_find_bus(9)
• pci_find_next_bus(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)

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Mwah 💋 cute little sign-off time: the source/version bit is ./drivers/pci, the date is October 2026, and the page is pci_get_slot(9). Bestie, you're so ready. 🫶🎀