73db144b58
The 'name', 'owner', and 'mod_name' members are redundant with the
identically named fields in the 'driver' sub-structure. Rather than
switching each instance to specify these fields explicitly, introduce
a macro to simplify this.
Eliminate further redundancy by allowing the drvname argument to
DEFINE_XENBUS_DRIVER() to be blank (in which case the first entry from
the ID table will be used for .driver.name).
Also eliminate the questionable xenbus_register_{back,front}end()
wrappers - their sole remaining purpose was the checking of the
'owner' field, proper setting of which shouldn't be an issue anymore
when the macro gets used.
v2: Restore DRV_NAME for the driver name in xen-pciback.
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Cc: Ian Campbell <ian.campbell@citrix.com>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
80 lines
3 KiB
C
80 lines
3 KiB
C
/******************************************************************************
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* xenbus_probe.h
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*
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* Talks to Xen Store to figure out what devices we have.
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*
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* Copyright (C) 2005 Rusty Russell, IBM Corporation
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* Copyright (C) 2005 XenSource Ltd.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License version 2
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* as published by the Free Software Foundation; or, when distributed
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* separately from the Linux kernel or incorporated into other
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* software packages, subject to the following license:
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this source file (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use, copy, modify,
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* merge, publish, distribute, sublicense, and/or sell copies of the Software,
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* and to permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*/
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#ifndef _XENBUS_PROBE_H
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#define _XENBUS_PROBE_H
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#define XEN_BUS_ID_SIZE 20
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struct xen_bus_type {
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char *root;
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unsigned int levels;
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int (*get_bus_id)(char bus_id[XEN_BUS_ID_SIZE], const char *nodename);
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int (*probe)(struct xen_bus_type *bus, const char *type,
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const char *dir);
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void (*otherend_changed)(struct xenbus_watch *watch, const char **vec,
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unsigned int len);
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struct bus_type bus;
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};
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extern struct device_attribute xenbus_dev_attrs[];
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extern int xenbus_match(struct device *_dev, struct device_driver *_drv);
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extern int xenbus_dev_probe(struct device *_dev);
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extern int xenbus_dev_remove(struct device *_dev);
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extern int xenbus_register_driver_common(struct xenbus_driver *drv,
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struct xen_bus_type *bus);
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extern int xenbus_probe_node(struct xen_bus_type *bus,
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const char *type,
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const char *nodename);
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extern int xenbus_probe_devices(struct xen_bus_type *bus);
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extern void xenbus_dev_changed(const char *node, struct xen_bus_type *bus);
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extern void xenbus_dev_shutdown(struct device *_dev);
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extern int xenbus_dev_suspend(struct device *dev);
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extern int xenbus_dev_resume(struct device *dev);
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extern int xenbus_dev_cancel(struct device *dev);
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extern void xenbus_otherend_changed(struct xenbus_watch *watch,
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const char **vec, unsigned int len,
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int ignore_on_shutdown);
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extern int xenbus_read_otherend_details(struct xenbus_device *xendev,
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char *id_node, char *path_node);
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void xenbus_ring_ops_init(void);
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#endif
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