bus_generic_shutdown(9) on FreeBSD
The text aa8b16fc35f7, as FreeBSD 5.5-RELEASE, FreeBSD 5.4-RELEASE, FreeBSD 5.3-RELEASE, FreeBSD 5.2.1-RELEASE, FreeBSD 5.2-RELEASE shipped it.
generic implementation of DEVICE_SHUTDOWN for busses
The text aa8b16fc35f7, as FreeBSD 5.5-RELEASE, FreeBSD 5.4-RELEASE, FreeBSD 5.3-RELEASE, FreeBSD 5.2.1-RELEASE, FreeBSD 5.2-RELEASE shipped it.
generic implementation of DEVICE_SHUTDOWN for busses