15317dd875
- device_print_child() either lets the BUS_PRINT_CHILD method produce the entire device announcement message or it prints "foo0: not found\n" Alter sys/kern/subr_bus.c:bus_generic_print_child() to take on the previous behavior of device_print_child() (printing the "foo0: <FooDevice 1.1>" bit of the announce message.) Provide bus_print_child_header() and bus_print_child_footer() to actually print the output for bus_generic_print_child(). These functions should be used whenever possible (unless you can just use bus_generic_print_child()) The BUS_PRINT_CHILD method now returns int instead of void. Modify everything else that defines or uses a BUS_PRINT_CHILD method to comply with the above changes. - Devices are 'on' a bus, not 'at' it. - If a custom BUS_PRINT_CHILD method does the same thing as bus_generic_print_child(), use bus_generic_print_child() - Use device_get_nameunit() instead of both device_get_name() and device_get_unit() - All BUS_PRINT_CHILD methods return the number of characters output. Reviewed by: dfr, peter
60 lines
2.2 KiB
Groff
60 lines
2.2 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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.\" $Id: BUS_PRINT_CHILD.9,v 1.2 1999/03/06 17:25:49 bde Exp $
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.\"
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.Dd June 16, 1998
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.Os
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.Dt BUS_PRINT_CHILD 9
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.Os FreeBSD
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.Sh NAME
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.Nm BUS_PRINT_CHILD
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.Nd print information about a device
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.Sh SYNOPSIS
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.Fd #include <sys/param.h>
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.Fd #include <sys/bus.h>
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.Ft int
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.Fn BUS_PRINT_CHILD "device_t dev" "device_t child"
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.Sh DESCRIPTION
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.Pp
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This is called from system code which prints out a description of a
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device. It should describe the attachment that the child has with
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the parent. For instance the TurboLaser bus prints which node the
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device is attached to.
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Please see bus_generic_print_child.9 for more information regarding
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the proper formatting of the messages printed by BUS_PRINT_CHILD.
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.Sh SEE ALSO
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.Xr device 9 ,
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.Xr driver 9 ,
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.Xr BUS_PRINT_CHILD 9
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.Sh RETURN VALUES
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The number of characters output.
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.Sh AUTHORS
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This man page was written by
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.An Doug Rabson .
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