.\"     $OpenBSD: config_defer.9,v 1.2 2015/12/12 11:34:29 jmc Exp $
.\"     $NetBSD: autoconf.9,v 1.9 2002/02/13 08:18:35 ross Exp $
.\"
.\" Copyright (c) 2001 The NetBSD Foundation, Inc.
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.\" This code is derived from software contributed to The NetBSD Foundation
.\" by Gregory McGarry.
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.Dd $Mdocdate: December 12 2015 $
.Dt CONFIG_DEFER 9
.Os
.Sh NAME
.Nm config_defer ,
.Nm config_mountroot
.Nd deferred device configuration
.Sh SYNOPSIS
.In sys/param.h
.In sys/device.h
.Ft "void"
.Fn config_defer "struct device *dev" "void (*func)(struct device *)"
.Ft "void"
.Fn config_mountroot "struct device *dev" "void (*func)(struct device *)"
.Sh DESCRIPTION
The
.Fn config_defer
function is called by the child to defer the remainder of its configuration
until all its parent devices have been attached.
At this point, the function
.Fa func
is called with the argument
.Fa dev .
.Pp
The
.Fn config_mountroot
function is called by a device driver to defer the remainder of its
configuration until after the root file system is mounted.
At this point, the function
.Fa func
is called with the argument
.Fa dev .