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diff --git a/include/asm-blackfin/irq.h b/include/asm-blackfin/irq.h
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+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file COPYING in the main directory of this archive
+ * for more details.
+ *
+ * Changed by HuTao Apr18, 2003
+ *
+ * Copyright was missing when I got the code so took from MIPS arch ...MaTed---
+ * Copyright (C) 1994 by Waldorf GMBH, written by Ralf Baechle
+ * Copyright (C) 1995, 96, 97, 98, 99, 2000, 2001 by Ralf Baechle
+ *
+ * Adapted for BlackFin (ADI) by Ted Ma <mated@sympatico.ca>
+ * Copyright (c) 2002 Arcturus Networks Inc. (www.arcturusnetworks.com)
+ * Copyright (c) 2002 Lineo, Inc. <mattw@lineo.com>
+ */
+
+#ifndef _BFIN_IRQ_H_
+#define _BFIN_IRQ_H_
+
+#include <asm/mach/irq.h>
+#include <asm/ptrace.h>
+
+/*******************************************************************************
+ *****   INTRODUCTION ***********
+ *   On the Blackfin, the interrupt structure allows remmapping of the hardware
+ *   levels.
+ * - I'm going to assume that the H/W level is going to stay at the default
+ *   settings. If someone wants to go through and abstart this out, feel free
+ *   to mod the interrupt numbering scheme.
+ * - I'm abstracting the interrupts so that uClinux does not know anything
+ *   about the H/W levels. If you want to change the H/W AND keep the abstracted
+ *   levels that uClinux sees, you should be able to do most of it here.
+ * - I've left the "abstract" numbering sparce in case someone wants to pull the
+ *   interrupts apart (just the TX/RX for the various devices)
+ *******************************************************************************/
+
+/* SYS_IRQS and NR_IRQS are defined in <asm/mach-bf5xx/irq.h>*/
+
+/*
+ * Machine specific interrupt sources.
+ *
+ * Adding an interrupt service routine for a source with this bit
+ * set indicates a special machine specific interrupt source.
+ * The machine specific files define these sources.
+ *
+ * The IRQ_MACHSPEC bit is now gone - the only thing it did was to
+ * introduce unnecessary overhead.
+ *
+ * All interrupt handling is actually machine specific so it is better
+ * to use function pointers, as used by the Sparc port, and select the
+ * interrupt handling functions when initializing the kernel. This way
+ * we save some unnecessary overhead at run-time.
+ *                                                      01/11/97 - Jes
+ */
+
+extern void ack_bad_irq(unsigned int irq);
+
+static __inline__ int irq_canonicalize(int irq)
+{
+	return irq;
+}
+
+/* count of spurious interrupts */
+/* extern volatile unsigned int num_spurious; */
+
+#ifndef NO_IRQ
+#define NO_IRQ ((unsigned int)(-1))
+#endif
+
+#endif				/* _BFIN_IRQ_H_ */