diff --git a/arch/arm/include/asm/hw_irq.h b/arch/arm/include/asm/hw_irq.h
index a71b417b18568101df9def0d0ad9db84e1980e21..af79da40af2a1b949e94de520d867dd08c5c628d 100644
--- a/arch/arm/include/asm/hw_irq.h
+++ b/arch/arm/include/asm/hw_irq.h
@@ -8,6 +8,7 @@ static inline void ack_bad_irq(int irq)
 {
 	extern unsigned long irq_err_count;
 	irq_err_count++;
+	pr_crit("unexpected IRQ trap at vector %02x\n", irq);
 }
 
 void set_irq_flags(unsigned int irq, unsigned int flags);