1 /*
2 * Copyright (C) 2003 Christoph Hellwig.
3 * Released under GPL v2.
4 *
5 * Support for old-style host templates.
6 *
7 * NOTE: Do not use this for new drivers ever.
8 */
9
10 #include <linux/init.h>
11 #include <linux/kernel.h>
12 #include <linux/module.h>
13
14 #include <scsi/scsi_host.h>
15
16
init_this_scsi_driver(void)17 static int __init init_this_scsi_driver(void)
18 {
19 struct scsi_host_template *sht = &driver_template;
20 struct Scsi_Host *shost;
21 struct list_head *l;
22 int error;
23
24 if (!sht->release) {
25 printk(KERN_ERR
26 "scsi HBA driver %s didn't set a release method.\n",
27 sht->name);
28 return -EINVAL;
29 }
30
31 sht->module = THIS_MODULE;
32 INIT_LIST_HEAD(&sht->legacy_hosts);
33
34 sht->detect(sht);
35 if (list_empty(&sht->legacy_hosts))
36 return -ENODEV;
37
38 list_for_each_entry(shost, &sht->legacy_hosts, sht_legacy_list) {
39 error = scsi_add_host(shost, NULL);
40 if (error)
41 goto fail;
42 scsi_scan_host(shost);
43 }
44 return 0;
45 fail:
46 l = &shost->sht_legacy_list;
47 while ((l = l->prev) != &sht->legacy_hosts)
48 scsi_remove_host(list_entry(l, struct Scsi_Host, sht_legacy_list));
49 return error;
50 }
51
exit_this_scsi_driver(void)52 static void __exit exit_this_scsi_driver(void)
53 {
54 struct scsi_host_template *sht = &driver_template;
55 struct Scsi_Host *shost, *s;
56
57 list_for_each_entry(shost, &sht->legacy_hosts, sht_legacy_list)
58 scsi_remove_host(shost);
59 list_for_each_entry_safe(shost, s, &sht->legacy_hosts, sht_legacy_list)
60 sht->release(shost);
61
62 if (list_empty(&sht->legacy_hosts))
63 return;
64
65 printk(KERN_WARNING "%s did not call scsi_unregister\n", sht->name);
66 dump_stack();
67
68 list_for_each_entry_safe(shost, s, &sht->legacy_hosts, sht_legacy_list)
69 scsi_unregister(shost);
70 }
71
72 module_init(init_this_scsi_driver);
73 module_exit(exit_this_scsi_driver);
74