[CIFS] Register and unregister cifs_spnego_key_type on module init/exit

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>

fs/cifs/cifsfs.c

@@ -43,6 +43,7 @@
 #include "cifs_debug.h"
 #include "cifs_fs_sb.h"
 #include <linux/mm.h>
+#include <linux/key-type.h>
 #define CIFS_MAGIC_NUMBER 0xFF534D42	/* the first four bytes of SMB PDUs */
 
 #ifdef CONFIG_CIFS_QUOTA
@@ -1005,12 +1006,16 @@ init_cifs(void)
 	rc = register_filesystem(&cifs_fs_type);
 	if (rc)
 		goto out_destroy_request_bufs;
-
+#ifdef CONFIG_CIFS_UPCALL
+	rc = register_key_type(&cifs_spnego_key_type);
+	if (rc)
+		goto out_unregister_filesystem;
+#endif
 	oplockThread = kthread_run(cifs_oplock_thread, NULL, "cifsoplockd");
 	if (IS_ERR(oplockThread)) {
 		rc = PTR_ERR(oplockThread);
 		cERROR(1, ("error %d create oplock thread", rc));
-		goto out_unregister_filesystem;
+		goto out_unregister_key_type;
 	}
 
 	dnotifyThread = kthread_run(cifs_dnotify_thread, NULL, "cifsdnotifyd");
@@ -1024,7 +1029,11 @@ init_cifs(void)
 
  out_stop_oplock_thread:
 	kthread_stop(oplockThread);
+ out_unregister_key_type:
+#ifdef CONFIG_CIFS_UPCALL
+	unregister_key_type(&cifs_spnego_key_type);
  out_unregister_filesystem:
+#endif
 	unregister_filesystem(&cifs_fs_type);
  out_destroy_request_bufs:
 	cifs_destroy_request_bufs();
@@ -1045,6 +1054,9 @@ exit_cifs(void)
 	cFYI(0, ("exit_cifs"));
 #ifdef CONFIG_PROC_FS
 	cifs_proc_clean();
+#endif
+#ifdef CONFIG_CIFS_UPCALL
+	unregister_key_type(&cifs_spnego_key_type);
 #endif
 	unregister_filesystem(&cifs_fs_type);
 	cifs_destroy_inodecache();