diff --git a/arch/s390/include/asm/ap.h b/arch/s390/include/asm/ap.h
index 3afbee21dc1f..c0c8a1f6c35d 100644
--- a/arch/s390/include/asm/ap.h
+++ b/arch/s390/include/asm/ap.h
@@ -12,6 +12,8 @@
 #ifndef _ASM_S390_AP_H_
 #define _ASM_S390_AP_H_
 
+#include <linux/io.h>
+
 /**
  * The ap_qid_t identifier of an ap queue.
  * If the AP facilities test (APFT) facility is available,
@@ -238,7 +240,7 @@ static inline struct ap_queue_status ap_aqic(ap_qid_t qid,
 		struct ap_qirq_ctrl qirqctrl;
 		struct ap_queue_status status;
 	} reg1;
-	void *reg2 = ind;
+	unsigned long reg2 = virt_to_phys(ind);
 
 	reg1.qirqctrl = qirqctrl;