--- zzzz-none-000/linux-3.10.107/arch/s390/include/asm/hardirq.h	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/arch/s390/include/asm/hardirq.h	2021-02-04 17:41:59.000000000 +0000
@@ -18,6 +18,9 @@
 #define __ARCH_HAS_DO_SOFTIRQ
 #define __ARCH_IRQ_EXIT_IRQS_DISABLED
 
-#define HARDIRQ_BITS	8
+static inline void ack_bad_irq(unsigned int irq)
+{
+	printk(KERN_CRIT "unexpected IRQ trap at vector %02x\n", irq);
+}
 
 #endif /* __ASM_HARDIRQ_H */