11da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 21da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Copyright (C) 2003 Christoph Hellwig. 31da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Released under GPL v2. 41da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 51da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Support for old-style host templates. 61da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 71da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * NOTE: Do not use this for new drivers ever. 81da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 91da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/init.h> 111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/kernel.h> 121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/module.h> 131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <scsi/scsi_host.h> 151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int __init init_this_scsi_driver(void) 181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct scsi_host_template *sht = &driver_template; 201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct Scsi_Host *shost; 211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct list_head *l; 221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int error; 231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!sht->release) { 251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR 261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "scsi HBA driver %s didn't set a release method.\n", 271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sht->name); 281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sht->module = THIS_MODULE; 321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds INIT_LIST_HEAD(&sht->legacy_hosts); 331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sht->detect(sht); 351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (list_empty(&sht->legacy_hosts)) 361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENODEV; 371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds list_for_each_entry(shost, &sht->legacy_hosts, sht_legacy_list) { 391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds error = scsi_add_host(shost, NULL); 401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (error) 411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto fail; 421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_scan_host(shost); 431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds fail: 461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds l = &shost->sht_legacy_list; 471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while ((l = l->prev) != &sht->legacy_hosts) 481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_remove_host(list_entry(l, struct Scsi_Host, sht_legacy_list)); 491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return error; 501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void __exit exit_this_scsi_driver(void) 531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct scsi_host_template *sht = &driver_template; 551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct Scsi_Host *shost, *s; 561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds list_for_each_entry(shost, &sht->legacy_hosts, sht_legacy_list) 581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_remove_host(shost); 591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds list_for_each_entry_safe(shost, s, &sht->legacy_hosts, sht_legacy_list) 601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sht->release(shost); 611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (list_empty(&sht->legacy_hosts)) 631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_WARNING "%s did not call scsi_unregister\n", sht->name); 661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dump_stack(); 671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds list_for_each_entry_safe(shost, s, &sht->legacy_hosts, sht_legacy_list) 691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_unregister(shost); 701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_init(init_this_scsi_driver); 731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_exit(exit_this_scsi_driver); 74