ACPI PCI Hotplug driver

modulename: acpiphp.ko

configname: CONFIG_HOTPLUG_PCI_ACPI

Linux Kernel Configuration
└─>Device Drivers
└─>PCI support
└─>Support for PCI Hotplug
└─>ACPI PCI Hotplug driver
In linux kernel since version 3.10 (release Date: 2013-06-30)  
Say Y here if you have a system that supports PCI Hotplug using
ACPI.

When in doubt, say N.

source code:
drivers/pci/hotplug/