pci_hp_add(9)

✨ pci_hp_add(9) ✨

okay so bestie, welcome to the pci_hp_add page from the Kernel API Manual gang — this is section 9, the kernel-dev one, iykyk 💅

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🌸 NAME 🌸

pci_hp_add — literally the function that publishes a hotplug slot to user space 🎀

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🦋 SYNOPSIS 🦋

int pci_hp_add (struct hotplug_slot *slot );

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💖 ARGUMENTS 💖

• slot — a pointer to the struct hotplug_slot you wanna publish. that's it, that's the whole arg 🫶

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👑 DESCRIPTION 👑

so what this does: it makes a hotplug slot's sysfs interface available, and then it tells user space "hey, new slot just dropped ✨" by sending a uevent.

⚠️ real talk though — from this exact point on, the hotplug driver must be prepared to handle all struct hotplug_slot_ops callbacks. no cap. like, every single one. so don't call this until you're actually ready to slay 💀

Returns 0 on success, or a negative int on error 😭

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🔥 SEE ALSO 🔥

• Kernel file ./drivers/pci/hotplug/pci_hotplug_core.c — go read it, it's giving main character energy 👑
• __pci_hp_register(9)
• __pci_hp_initialize(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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and that's the whole page bestie, go forth and register your hotplug slots 🌈

okay bye ily — this one's from ./drivers/pci/hotplug, dated October 2026, and it's pci_hp_add(9) signing off 🎀💜🍓