PCI Express Port Bus support

modulename: pcieportdrv.ko

configname: CONFIG_PCIEPORTBUS

Linux Kernel Configuration
└─>Device Drivers
└─>PCI support
└─>PCI Express Port Bus support
In linux kernel since version 3.10 (release Date: 2013-06-30)  
This enables PCI Express Port Bus support. Users can then enable
support for Native Hot-Plug, Advanced Error Reporting, Power
Management Events, and Downstream Port Containment.

source code:
depends
CONFIG_PCI

is selected by
CONFIG_PCIEAER