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