diff --git a/drivers/mca/mca-driver.c b/drivers/mca/mca-driver.c
new file mode 100644
index 0000000..2223466
--- /dev/null
+++ b/drivers/mca/mca-driver.c
@@ -0,0 +1,50 @@
+/* -*- mode: c; c-basic-offset: 8 -*- */
+
+/*
+ * MCA driver support functions for sysfs.
+ *
+ * (C) 2002 James Bottomley <James.Bottomley@HansenPartnership.com>
+ *
+**-----------------------------------------------------------------------------
+**  
+**  This program is free software; you can redistribute it and/or modify
+**  it under the terms of the GNU General Public License as published by
+**  the Free Software Foundation; either version 2 of the License, or
+**  (at your option) any later version.
+**
+**  This program is distributed in the hope that it will be useful,
+**  but WITHOUT ANY WARRANTY; without even the implied warranty of
+**  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+**  GNU General Public License for more details.
+**
+**  You should have received a copy of the GNU General Public License
+**  along with this program; if not, write to the Free Software
+**  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+**
+**-----------------------------------------------------------------------------
+ */
+
+#include <linux/device.h>
+#include <linux/mca.h>
+#include <linux/module.h>
+
+int mca_register_driver(struct mca_driver *mca_drv)
+{
+	int r;
+
+	if (MCA_bus) {
+		mca_drv->driver.bus = &mca_bus_type;
+		if ((r = driver_register(&mca_drv->driver)) < 0)
+			return r;
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL(mca_register_driver);
+
+void mca_unregister_driver(struct mca_driver *mca_drv)
+{
+	if (MCA_bus)
+		driver_unregister(&mca_drv->driver);
+}
+EXPORT_SYMBOL(mca_unregister_driver);