PCI: fix kernel oops on bridge removal
[linux-2.6.git] / drivers / pci / pci-stub.c
1 /* pci-stub - simple stub driver to reserve a pci device
2  *
3  * Copyright (C) 2008 Red Hat, Inc.
4  * Author:
5  *      Chris Wright
6  *
7  * This work is licensed under the terms of the GNU GPL, version 2.
8  *
9  * Usage is simple, allocate a new id to the stub driver and bind the
10  * device to it.  For example:
11  * 
12  * # echo "8086 10f5" > /sys/bus/pci/drivers/pci-stub/new_id
13  * # echo -n 0000:00:19.0 > /sys/bus/pci/drivers/e1000e/unbind
14  * # echo -n 0000:00:19.0 > /sys/bus/pci/drivers/pci-stub/bind
15  * # ls -l /sys/bus/pci/devices/0000:00:19.0/driver
16  * .../0000:00:19.0/driver -> ../../../bus/pci/drivers/pci-stub
17  */
18
19 #include <linux/module.h>
20 #include <linux/pci.h>
21
22 static int pci_stub_probe(struct pci_dev *dev, const struct pci_device_id *id)
23 {
24         return 0;
25 }
26
27 static struct pci_driver stub_driver = {
28         .name           = "pci-stub",
29         .id_table       = NULL, /* only dynamic id's */
30         .probe          = pci_stub_probe,
31 };
32
33 static int __init pci_stub_init(void)
34 {
35         return pci_register_driver(&stub_driver);
36 }
37
38 static void __exit pci_stub_exit(void)
39 {
40         pci_unregister_driver(&stub_driver);
41 }
42
43 module_init(pci_stub_init);
44 module_exit(pci_stub_exit);
45
46 MODULE_LICENSE("GPL");
47 MODULE_AUTHOR("Chris Wright <chrisw@sous-sol.org>");