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