bus_generic_print_child(9) on FreeBSD
The text 91241e2f73ac, as FreeBSD 5.5-RELEASE, FreeBSD 5.4-RELEASE, FreeBSD 5.3-RELEASE, FreeBSD 5.2.1-RELEASE, FreeBSD 5.2-RELEASE, FreeBSD 5.1-RELEASE, FreeBSD 5.0-RELEASE shipped it.
generic implementation of DEVICE_PRINT_CHILD for busses