builtin_pci_driver(9)

💅 builtin_pci_driver — from the Kernel API Manual, section 9

okay bestie, so this one is builtin_pci_driver(9) and it lives in the Kernel API Manual, and honestly it's giving "tiny macro, huge slay" energy. Let's get into it 🎀

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✨ NAME ✨

builtin_pci_driver — the helper macro for registering a PCI driver. that's it, that's the whole vibe 🦋

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✨ SYNOPSIS ✨

builtin_pci_driver (__pci_driver );

that's literally the whole thing. no extra nonsense, no secret params. iconic behavior fr fr 💅

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✨ ARGUMENTS ✨

• __pci_driver — a pci_driver struct. that's the one (1) thing you hand over, bestie, and it's the struct itself, no cap 🌸

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✨ DESCRIPTION ✨

so here's the tea: this is a helper macro for PCI drivers that don't do anything special in their init code. like, nothing cute happens at init, it's just "hey kernel, register my driver, thanks, bye." 🫶

and because that's such a common situation, this macro eliminates a lot of boilerplate — all that repetitive setup code? gone. not me crying tears of joy 😭✨

⚠️ real talk, two things you gotta remember: each driver may only use this macro once, and calling it replaces device_initcall(...). so don't double up and don't also go calling device_initcall yourself, that's the whole point, bestie 💀

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✨ SEE ALSO ✨

the whole friend group came through 🔥 (and heads up, these live in the kernel file ./include/linux/pci.h):

• enum pci_interrupt_pin(9)
• pci_channel_state_t(9)
• pci_is_bridge(9)
• pci_is_vga(9)
• pci_is_display(9)
• struct pci_driver(9)
• PCI_DEVICE(9)
• PCI_DEVICE_DRIVER_OVERRIDE(9)
• PCI_DRIVER_OVERRIDE_DEVICE_VFIO(9)
• PCI_DEVICE_SUB(9)
• PCI_DEVICE_CLASS(9)
• PCI_VDEVICE(9)
• PCI_VDEVICE_SUB(9)
• PCI_DEVICE_DATA(9)
• pcie_capability_clear_and_set_word(9)
• pci_bus_for_each_resource(9)
• module_pci_driver(9)
• pci_irq_type(9)
• pci_irqd_intx_xlate(9)
• pci_resource_is_io(9)
• pci_resource_is_mem(9)
• pci_pcie_cap(9)
• pci_is_pcie(9)
• pcie_caps_reg(9)
• pci_pcie_type(9)
• pcie_find_root_port(9)
• pci_vpd_alloc(9)
• pci_vpd_find_id_string(9)
• pci_vpd_find_ro_info_keyword(9)
• pci_vpd_check_csum(9)
• pci_ari_enabled(9)
• pci_is_thunderbolt_attached(9)

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and that's the page!! 🎀 mwah 💋

so like, this one's filed under ./include/linux (that's the source spot, periodt) and it's dated October 2026, which is lowkey futuristic of it ngl ⭐ girlies really said "see you in the future" and meant it. go register some PCI drivers, bestie, you're gonna slay 🌈👑