71499f6a2d
In particular, reset the DF_QUIET flag when detaching from a device so that a driver that marks a device quiet doesn't dictate policy for a different driver that may claim the device in the future. Reviewed by: rpokala, wblock MFC after: 2 weeks Sponsored by: Chelsio Communications Differential Revision: https://reviews.freebsd.org/D7803
69 lines
2.3 KiB
Groff
69 lines
2.3 KiB
Groff
.\" -*- nroff -*-
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.\"
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.\" Copyright (c) 1998 Doug Rabson
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.\"
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.\" All rights reserved.
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.\"
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.\" This program is free software.
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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 DEVELOPERS ``AS IS'' AND ANY EXPRESS OR
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.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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.\" IN NO EVENT SHALL THE DEVELOPERS BE LIABLE FOR ANY DIRECT, INDIRECT,
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.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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.\"
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.\" $FreeBSD$
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.\"
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.Dd September 12, 2016
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.Dt DEVICE_QUIET 9
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.Os
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.Sh NAME
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.Nm device_quiet ,
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.Nm device_verbose ,
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.Nm device_is_quiet
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.Nd manipulate device quiet flag
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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 device_quiet "device_t dev"
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.Ft void
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.Fn device_verbose "device_t dev"
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.Ft int
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.Fn device_is_quiet "device_t dev"
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.Sh DESCRIPTION
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Each device has a quiet flag associated with it.
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A device is
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verbose by default when it is created but may be quieted to prevent
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printing of the device identification string during attach
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and printing of a message during detach.
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To quiet a device, call
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.Fn device_quiet
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during a device driver probe routine.
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To re-enable probe messages,
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call
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.Fn device_verbose .
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To test to see if a device is quieted, call
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.Fn device_is_quiet .
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.Pp
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Devices are implicitly marked verbose after a driver detaches.
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.Sh SEE ALSO
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.Xr device 9
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.Sh AUTHORS
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This manual page was written by
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.An Doug Rabson .
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