Directory listing for /sys/class/pci_bus/0000:28/subsystem/0000:21/device/0000:21:00.0/driver/
0000:00:04.0@
0000:20:00.0@
0000:21:00.0@
0000:22:00.0@
0000:23:00.0@
bind
module@
new_id
remove_id
uevent
unbind