openwrt/package/hotplug2/files/hotplug2.rules

$include /etc/hotplug2-common.rules

SUBSYSTEM ~~ (net|button|usb|platform|ieee1394|block|atm) {
	exec /sbin/hotplug-call %SUBSYSTEM%
}

DEVICENAME ~~ (watchdog) {
	exec /sbin/watchdog -t 5 /dev/watchdog
	next
}