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path: root/drivers/scsi/scsi_module.c
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Diffstat (limited to 'drivers/scsi/scsi_module.c')
-rw-r--r--drivers/scsi/scsi_module.c73
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);