1 files changed, 73 insertions, 0 deletions

diff --git a/drivers/scsi/scsi_module.c b/drivers/scsi/scsi_module.c
new file mode 100644
index 000000000000..489175833709
--- /dev/null
+++ b/drivers/scsi/scsi_module.c
@@ -0,0 +1,73 @@
+/*
+ * 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);