2 * Copyright (c) 2010 Isilon Systems, Inc.
3 * Copyright (c) 2010 iX Systems, Inc.
4 * Copyright (c) 2010 Panasas, Inc.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice unmodified, this list of conditions, and the following
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 #ifndef _LINUX_MISCDEVICE_H_
30 #define _LINUX_MISCDEVICE_H_
32 #define MISC_DYNAMIC_MINOR -1
34 #include <linux/device.h>
35 #include <linux/cdev.h>
39 struct device *this_device;
40 const struct file_operations *fops;
45 extern struct class miscclass;
48 misc_register(struct miscdevice *misc)
50 misc->this_device = device_create(&miscclass, &linux_rootdev, 0, misc,
52 misc->cdev = cdev_alloc();
53 if (misc->cdev == NULL)
55 misc->cdev->owner = THIS_MODULE;
56 misc->cdev->ops = misc->fops;
57 kobject_set_name(&misc->cdev->kobj, misc->name);
58 if (cdev_add(misc->cdev, misc->this_device->devt, 1))
64 misc_deregister(struct miscdevice *misc)
66 device_destroy(&miscclass, misc->this_device->devt);
72 #endif /* _LINUX_MISCDEVICE_H_ */