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>");