Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / scsi / scsi_module.c

diff --git a/kernel/drivers/scsi/scsi_module.c b/kernel/drivers/scsi/scsi_module.c
new file mode 100644 (file)
index 0000000..4891758
--- /dev/null
+++ b/kernel/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);