of_irq_parse_and_map_pci(9)

🎀 of_irq_parse_and_map_pci(9) 🎀

okay so this is from the Kernel API Manual, and it's literally the page for of_irq_parse_and_map_pci(9) — bestie, we're decoding a PCI IRQ from the device tree and mapping it to a VIRQ. iconic. No cap. ✨

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💖 NAME 💖

of_irq_parse_and_map_pci — Decode a PCI IRQ from the device tree and map to a VIRQ 💅

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🌸 SYNOPSIS 🌸

int of_irq_parse_and_map_pci (const struct pci_dev *dev , u8 slot , u8 pin );

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🦋 ARGUMENTS 🦋

• dev — The PCI device needing an IRQ. Like, the main character that wants its interrupt, periodt. 👑
• slot — PCI slot number; passed when used as map_irq callback. Unused. So it's giving “I'm here for the callback signature” energy. 💀
• pin — PCI IRQ pin number; passed when used as map_irq callback. Unused. Same vibe: present, but not doing anything. 🫶

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💜 DESCRIPTION 💜

So slot and pin are unused, but they're included in the function so that this function can be used directly as the map_irq callback to pci_assign_irq and struct pci_host_bridge.map_irq pointer. That's the whole tea. ☕✨

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🔥 SEE ALSO 🔥

Kernel file: ./drivers/pci/of.c — literally the source file, bestie. 🧚

• pci_set_of_node(9)
• of_pci_get_devfn(9)
• of_pci_parse_bus_range(9)
• of_get_pci_domain_nr(9)
• of_pci_preserve_config(9)
• of_pci_check_probe_only(9)
• devm_of_pci_get_host_bridge_resources(9)
• of_irq_parse_pci(9)
• of_pci_supply_present(9)
• of_pci_get_max_link_speed(9)
• of_pci_get_slot_power_limit(9)
• of_pci_get_equalization_presets(9)

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okay that's the page, bestie! source/version: ./drivers/pci; date: October 2026; page title: of_irq_parse_and_map_pci(9). mwah 💋💖