systemd-stable/etc/udev/redhat/05-udev-early.rules

# sysfs is populated after the event is sent
ACTION=="add", DEVPATH=="/devices/*", ENV{PHYSDEVBUS}=="?*", WAIT_FOR_SYSFS="bus"
ACTION=="add", SUBSYSTEM=="net", WAIT_FOR_SYSFS="address"
ACTION=="add", SUBSYSTEM=="scsi", WAIT_FOR_SYSFS="ioerr_cnt"                    

# ignore these events until someone needs them
SUBSYSTEM=="drivers",		OPTIONS="ignore_device"
SUBSYSTEM=="module",		OPTIONS="ignore_device"

ACTION=="add", SUBSYSTEM=="firmware", ENV{FIRMWARE}=="*", RUN="/sbin/firmware_helper", OPTIONS="last_rule"
update Red Hat rules 2006-02-15 22:57:29 +03:00			`# sysfs is populated after the event is sent`
			`ACTION=="add", DEVPATH=="/devices/", ENV{PHYSDEVBUS}=="?", WAIT_FOR_SYSFS="bus"`
			`ACTION=="add", SUBSYSTEM=="net", WAIT_FOR_SYSFS="address"`
update Fedora rules 2006-08-13 06:22:21 +04:00			`ACTION=="add", SUBSYSTEM=="scsi", WAIT_FOR_SYSFS="ioerr_cnt"`
update Red Hat rules 2006-02-15 22:57:29 +03:00
			`# ignore these events until someone needs them`
			`SUBSYSTEM=="drivers", OPTIONS="ignore_device"`
			`SUBSYSTEM=="module", OPTIONS="ignore_device"`

			`ACTION=="add", SUBSYSTEM=="firmware", ENV{FIRMWARE}=="*", RUN="/sbin/firmware_helper", OPTIONS="last_rule"`