scsi_module.c
1.65 KB
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/*
* Copyright (C) 2003 Christoph Hellwig.
* Released under GPL v2.
*
* Support for old-style host templates.
*
* NOTE: Do not use this for new drivers ever.
*/
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <scsi/scsi_host.h>
static int __init init_this_scsi_driver(void)
{
struct scsi_host_template *sht = &driver_template;
struct Scsi_Host *shost;
struct list_head *l;
int error;
if (!sht->release) {
printk(KERN_ERR
"scsi HBA driver %s didn't set a release method.\n",
sht->name);
return -EINVAL;
}
sht->module = THIS_MODULE;
INIT_LIST_HEAD(&sht->legacy_hosts);
sht->detect(sht);
if (list_empty(&sht->legacy_hosts))
return -ENODEV;
list_for_each_entry(shost, &sht->legacy_hosts, sht_legacy_list) {
error = scsi_add_host(shost, NULL);
if (error)
goto fail;
scsi_scan_host(shost);
}
return 0;
fail:
l = &shost->sht_legacy_list;
while ((l = l->prev) != &sht->legacy_hosts)
scsi_remove_host(list_entry(l, struct Scsi_Host, sht_legacy_list));
return error;
}
static void __exit exit_this_scsi_driver(void)
{
struct scsi_host_template *sht = &driver_template;
struct Scsi_Host *shost, *s;
list_for_each_entry(shost, &sht->legacy_hosts, sht_legacy_list)
scsi_remove_host(shost);
list_for_each_entry_safe(shost, s, &sht->legacy_hosts, sht_legacy_list)
sht->release(shost);
if (list_empty(&sht->legacy_hosts))
return;
printk(KERN_WARNING "%s did not call scsi_unregister\n", sht->name);
dump_stack();
list_for_each_entry_safe(shost, s, &sht->legacy_hosts, sht_legacy_list)
scsi_unregister(shost);
}
module_init(init_this_scsi_driver);
module_exit(exit_this_scsi_driver);