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diff --git a/drivers/staging/vt6656/michael.h b/drivers/staging/vt6656/michael.h
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+/*
+ * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
+ * All rights reserved.
+ *
+ * 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.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ *
+ * File: Michael.h
+ *
+ * Purpose: Reference implementation for Michael
+ * written by Niels Ferguson
+ *
+ * Author: Kyle Hsu
+ *
+ * Date: Jan 2, 2003
+ *
+ */
+
+#ifndef __MICHAEL_H__
+#define __MICHAEL_H__
+
+#include <linux/types.h>
+
+void MIC_vInit(u32 dwK0, u32 dwK1);
+
+void MIC_vUnInit(void);
+
+// Append bytes to the message to be MICed
+void MIC_vAppend(u8 * src, unsigned int nBytes);
+
+// Get the MIC result. Destination should accept 8 bytes of result.
+// This also resets the message to empty.
+void MIC_vGetMIC(u32 * pdwL, u32 * pdwR);
+
+// Rotation functions on 32 bit values
+#define ROL32(A, n) \
+ (((A) << (n)) | (((A)>>(32-(n))) & ((1UL << (n)) - 1)))
+#define ROR32(A, n) ROL32((A), 32-(n))
+
+#endif /* __MICHAEL_H__ */