__pci_hp_register(9)

💖 __pci_hp_register(9) 💖

okay bestie, welcome to the Kernel API Manual corner of the group chat — this one is literally about registering a hotplug_slot with the PCI hotplug subsystem, and yes it’s giving main character kernel energy ✨

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🌸 NAME 🌸

__pci_hp_register — register a hotplug_slot with the PCI hotplug subsystem 🫶

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✨ SYNOPSIS ✨

int __pci_hp_register (struct hotplug_slot *slot , struct pci_bus *bus , int devnr , const char *name , struct module *owner , const char *mod_name );

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🎀 ARGUMENTS 🎀

• slot — pointer to the struct hotplug_slot to register 💅
• bus — bus this slot is on 🚌
• devnr — device number 🔢
• name — name registered with kobject core 🏷️
• owner — caller module owner 👑
• mod_name — caller module name 📛

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🦋 DESCRIPTION 🦋

So here’s the vibe: __pci_hp_register prepares a hotplug slot for in-kernel use and immediately publishes it to user space in one go. literally both steps, same breath, no cap 😭✨

Drivers may alternatively carry out the two steps separately by invoking pci_hp_initialize and pci_hp_add — iykyk, sometimes you want the split version 🧚

Return situation: 0 if successful, anything else for an error 🫡

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🔥 SEE ALSO 🔥

• Kernel file ./drivers/pci/hotplug/pci_hotplug_core.c 👀
• __pci_hp_initialize(9) 🌱
• pci_hp_add(9) ➕
• pci_hp_deregister(9) 🚪
• pci_hp_del(9) 🗑️
• pci_hp_destroy(9) 💥
• pci_hp_ignore_link_change(9) 🙈
• pci_hp_unignore_link_change(9) 🙉
• pci_hp_spurious_link_change(9) 💀

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mwah 💋 — source/version: ./drivers/pci/hotplug; date: October 2026; page: __pci_hp_register(9). 💜