//sys/devices/pci0000:00/0000:00:18.4/subsystem/drivers/pcieport-driver/0000:00:17.2/driver/0000:00:17.0/subsystem/devices/0000:00:16.4/driver/0000:00:18.7/driver/0000:00:15.4/0000:00:15.4:pcie02/uevent