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diff --git a/kernel/drivers/staging/comedi/comedi_compat32.h b/kernel/drivers/staging/comedi/comedi_compat32.h
new file mode 100644
index 000000000..5ce77f3e8
--- /dev/null
+++ b/kernel/drivers/staging/comedi/comedi_compat32.h
@@ -0,0 +1,36 @@
+/*
+ * comedi/comedi_compat32.h
+ * 32-bit ioctl compatibility for 64-bit comedi kernel module.
+ *
+ * Author: Ian Abbott, MEV Ltd. <abbotti@mev.co.uk>
+ * Copyright (C) 2007 MEV Ltd. <http://www.mev.co.uk/>
+ *
+ * COMEDI - Linux Control and Measurement Device Interface
+ * Copyright (C) 1997-2007 David A. Schleef <ds@schleef.org>
+ *
+ * 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.
+ */
+
+#ifndef _COMEDI_COMPAT32_H
+#define _COMEDI_COMPAT32_H
+
+#ifdef CONFIG_COMPAT
+
+struct file;
+long comedi_compat_ioctl(struct file *, unsigned int cmd, unsigned long arg);
+
+#else /* CONFIG_COMPAT */
+
+#define comedi_compat_ioctl	NULL
+
+#endif /* CONFIG_COMPAT */
+
+#endif /* _COMEDI_COMPAT32_H */