1.\" -*- nroff -*- 2.\" 3.\" Copyright (c) 2016 John H. Baldwin <jhb@FreeBSD.org> 4.\" All rights reserved. 5.\" 6.\" Redistribution and use in source and binary forms, with or without 7.\" modification, are permitted provided that the following conditions 8.\" are met: 9.\" 1. Redistributions of source code must retain the above copyright 10.\" notice, this list of conditions and the following disclaimer. 11.\" 2. Redistributions in binary form must reproduce the above copyright 12.\" notice, this list of conditions and the following disclaimer in the 13.\" documentation and/or other materials provided with the distribution. 14.\" 15.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25.\" SUCH DAMAGE. 26.\" 27.\" $FreeBSD$ 28.\" 29.Dd April 27, 2016 30.Dt BUS_RESCAN 9 31.Os 32.Sh NAME 33.Nm BUS_RESCAN 34.Nd "rescan a bus checking for devices that have been added or removed" 35.Sh SYNOPSIS 36.In sys/param.h 37.In sys/bus.h 38.Ft void 39.Fn BUS_RESCAN "device_t dev" 40.Sh DESCRIPTION 41The 42.Fn BUS_RESCAN 43method is called to request a rescan of the child devices on a bus device. 44The method should add any devices that have been added since the previous 45scan and remove devices that have been removed. 46This method is not required to re-examine existing devices to determine if 47their properties have changed. 48This method is also not required to propagate the rescan request to child 49devices. 50.Sh SEE ALSO 51.Xr device 9 52