/share/man/man9/BUS_ADD_CHILD.9

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29.\" $FreeBSD$
30.\"
31.Dd May 13, 2004
32.Dt BUS_ADD_CHILD 9
33.Os
34.Sh NAME
35.Nm BUS_ADD_CHILD
36.Nd "add a device node to the tree with a given priority"
37.Sh SYNOPSIS
38.In sys/param.h
39.In sys/bus.h
40.Ft int
41.Fn BUS_ADD_CHILD "device_t dev" "int order" "const char *name" "int unit"
42.Sh DESCRIPTION
43The
44.Fn BUS_ADD_CHILD
45method
46is used by the driver identify routine to add devices to the tree.
47Please see
48.Xr device_add_child 9
49for more details.
50The interface is the same as
51.Xr device_add_child 9
52however, the bus'
53.Fn BUS_ADD_CHILD
54is called.
55.Pp
56Busses implementing
57.Fn BUS_ADD_CHILD
58should insert the device into the tree using
59.Xr device_add_child 9
60before adding things such as their own ivars and resource lists to the device.
61.Sh RETURN VALUES
62The
63.Fn BUS_ADD_CHILD
64method returns
65.Vt device_t
66added to the tree, or
67.Dv NULL .
68.Sh SEE ALSO
69.Xr device 9 ,
70.Xr device_add_child 9 ,
71.Xr driver 9
72.Sh AUTHORS
73This manual page was written by
74.An M. Warner Losh .