diff --git a/arch/mips/dec/int-handler.S b/arch/mips/dec/int-handler.S
index 31dd47d..b251ef8 100644
--- a/arch/mips/dec/int-handler.S
+++ b/arch/mips/dec/int-handler.S
@@ -267,7 +267,7 @@
 		LONG_L	s0, TI_REGS($28)
 		LONG_S	sp, TI_REGS($28)
 		PTR_LA	ra, ret_from_irq
-		j	do_IRQ
+		j	dec_irq_dispatch
 		 nop
 
 #ifdef CONFIG_32BIT
diff --git a/arch/mips/dec/setup.c b/arch/mips/dec/setup.c
index 6b7481e..d34032a 100644
--- a/arch/mips/dec/setup.c
+++ b/arch/mips/dec/setup.c
@@ -761,3 +761,9 @@
 	if (dec_interrupt[DEC_IRQ_HALT] >= 0)
 		setup_irq(dec_interrupt[DEC_IRQ_HALT], &haltirq);
 }
+
+asmlinkage unsigned int dec_irq_dispatch(unsigned int irq)
+{
+	do_IRQ(irq);
+	return 0;
+}
diff --git a/arch/mips/kernel/irq.c b/arch/mips/kernel/irq.c
index e997c94..b339798 100644
--- a/arch/mips/kernel/irq.c
+++ b/arch/mips/kernel/irq.c
@@ -88,25 +88,6 @@
 unsigned long irq_hwmask[NR_IRQS];
 #endif /* CONFIG_MIPS_MT_SMTC */
 
-#undef do_IRQ
-
-/*
- * do_IRQ handles all normal device IRQ's (the special
- * SMP cross-CPU interrupts have their own specific
- * handlers).
- */
-asmlinkage unsigned int do_IRQ(unsigned int irq)
-{
-	irq_enter();
-
-	__DO_IRQ_SMTC_HOOK();
-	__do_IRQ(irq);
-
-	irq_exit();
-
-	return 1;
-}
-
 /*
  * Generic, controller-independent functions:
  */
diff --git a/include/asm-mips/irq.h b/include/asm-mips/irq.h
index aed3707..6765708 100644
--- a/include/asm-mips/irq.h
+++ b/include/asm-mips/irq.h
@@ -24,8 +24,6 @@
 #define irq_canonicalize(irq) (irq)	/* Sane hardware, sane code ... */
 #endif
 
-extern asmlinkage unsigned int do_IRQ(unsigned int irq);
-
 #ifdef CONFIG_MIPS_MT_SMTC
 /*
  * Clear interrupt mask handling "backstop" if irq_hwmask
@@ -43,8 +41,6 @@
 #define __DO_IRQ_SMTC_HOOK() do { } while (0)
 #endif
 
-#ifdef CONFIG_PREEMPT
-
 /*
  * do_IRQ handles all normal device IRQ's (the special
  * SMP cross-CPU interrupts have their own specific
@@ -61,8 +57,6 @@
 	irq_exit();							\
 } while (0)
 
-#endif
-
 extern void arch_init_irq(void);
 extern void spurious_interrupt(void);