diff --git a/arch/mips/include/asm/irq.h b/arch/mips/include/asm/irq.h
index 76941ae572b2ce3949babf921e4ca426b1e2c890..44f9824c1d8c3b855fcf4b5c6a814476d3e9452a 100644
--- a/arch/mips/include/asm/irq.h
+++ b/arch/mips/include/asm/irq.h
@@ -63,8 +63,6 @@ extern void do_domain_IRQ(struct irq_domain *domain, unsigned int irq);
 extern void arch_init_irq(void);
 extern void spurious_interrupt(void);
 
-extern int allocate_irqno(void);
-
 /*
  * Before R2 the timer and performance counter interrupts were both fixed to
  * IE7.	 Since R2 their number has to be read from the c0_intctl register.