diff --git a/arch/s390/include/asm/ap.h b/arch/s390/include/asm/ap.h
index c699f251a464..0744a00f92a5 100644
--- a/arch/s390/include/asm/ap.h
+++ b/arch/s390/include/asm/ap.h
@@ -386,7 +386,7 @@ static inline struct ap_queue_status ap_nqap(ap_qid_t qid,
  * *resgr0 is to be used instead of qid to further process this entry.
  */
 static inline struct ap_queue_status ap_dqap(ap_qid_t qid,
-					     unsigned long long *psmid,
+					     unsigned long *psmid,
 					     void *msg, size_t length,
 					     size_t *reslength,
 					     unsigned long *resgr0)
@@ -429,7 +429,7 @@ static inline struct ap_queue_status ap_dqap(ap_qid_t qid,
 		if (resgr0)
 			*resgr0 = reg0;
 	} else {
-		*psmid = (((unsigned long long)rp1.even) << 32) + rp1.odd;
+		*psmid = (rp1.even << 32) + rp1.odd;
 		if (resgr0)
 			*resgr0 = 0;
 	}
diff --git a/drivers/s390/crypto/ap_bus.h b/drivers/s390/crypto/ap_bus.h
index 0f17933954fb..4ef8e6ac6323 100644
--- a/drivers/s390/crypto/ap_bus.h
+++ b/drivers/s390/crypto/ap_bus.h
@@ -242,7 +242,7 @@ enum ap_fi_flags {
 
 struct ap_message {
 	struct list_head list;		/* Request queueing. */
-	unsigned long long psmid;	/* Message id. */
+	unsigned long psmid;		/* Message id. */
 	void *msg;			/* Pointer to message buffer. */
 	unsigned int len;		/* actual msg len in msg buffer */
 	unsigned int bufsize;		/* allocated msg buffer size */
@@ -285,8 +285,8 @@ static inline void ap_release_message(struct ap_message *ap_msg)
  * for the first time. Otherwise the ap message queue will get
  * confused.
  */
-int ap_send(ap_qid_t, unsigned long long, void *, size_t);
-int ap_recv(ap_qid_t, unsigned long long *, void *, size_t);
+int ap_send(ap_qid_t qid, unsigned long psmid, void *msg, size_t length);
+int ap_recv(ap_qid_t qid, unsigned long *psmid, void *msg, size_t length);
 
 enum ap_sm_wait ap_sm_event(struct ap_queue *aq, enum ap_sm_event event);
 enum ap_sm_wait ap_sm_event_loop(struct ap_queue *aq, enum ap_sm_event event);
diff --git a/drivers/s390/crypto/ap_queue.c b/drivers/s390/crypto/ap_queue.c
index 2637fe1df727..2fe8cbf72091 100644
--- a/drivers/s390/crypto/ap_queue.c
+++ b/drivers/s390/crypto/ap_queue.c
@@ -68,7 +68,7 @@ static int ap_queue_enable_irq(struct ap_queue *aq, void *ind)
  * because a segment boundary was reached. The NQAP is repeated.
  */
 static inline struct ap_queue_status
-__ap_send(ap_qid_t qid, unsigned long long psmid, void *msg, size_t length,
+__ap_send(ap_qid_t qid, unsigned long psmid, void *msg, size_t length,
 	  int special)
 {
 	if (special)
@@ -76,7 +76,7 @@ __ap_send(ap_qid_t qid, unsigned long long psmid, void *msg, size_t length,
 	return ap_nqap(qid, psmid, msg, length);
 }
 
-int ap_send(ap_qid_t qid, unsigned long long psmid, void *msg, size_t length)
+int ap_send(ap_qid_t qid, unsigned long psmid, void *msg, size_t length)
 {
 	struct ap_queue_status status;
 
@@ -95,7 +95,7 @@ int ap_send(ap_qid_t qid, unsigned long long psmid, void *msg, size_t length)
 }
 EXPORT_SYMBOL(ap_send);
 
-int ap_recv(ap_qid_t qid, unsigned long long *psmid, void *msg, size_t length)
+int ap_recv(ap_qid_t qid, unsigned long *psmid, void *msg, size_t length)
 {
 	struct ap_queue_status status;
 
@@ -177,7 +177,7 @@ static struct ap_queue_status ap_sm_recv(struct ap_queue *aq)
 			break;
 		}
 		if (!found) {
-			AP_DBF_WARN("%s unassociated reply psmid=0x%016llx on 0x%02x.%04x\n",
+			AP_DBF_WARN("%s unassociated reply psmid=0x%016lx on 0x%02x.%04x\n",
 				    __func__, aq->reply->psmid,
 				    AP_QID_CARD(aq->qid), AP_QID_QUEUE(aq->qid));
 		}
diff --git a/drivers/s390/crypto/zcrypt_cex2c.c b/drivers/s390/crypto/zcrypt_cex2c.c
index cb7849defce3..9cabe3937c9a 100644
--- a/drivers/s390/crypto/zcrypt_cex2c.c
+++ b/drivers/s390/crypto/zcrypt_cex2c.c
@@ -181,7 +181,7 @@ static const struct attribute_group cca_queue_attr_grp = {
 static int zcrypt_cex2c_rng_supported(struct ap_queue *aq)
 {
 	struct ap_message ap_msg;
-	unsigned long long psmid;
+	unsigned long psmid;
 	unsigned int domain;
 	struct {
 		struct type86_hdr hdr;
@@ -209,7 +209,7 @@ static int zcrypt_cex2c_rng_supported(struct ap_queue *aq)
 	msg = ap_msg.msg;
 	msg->cprbx.domain = AP_QID_QUEUE(aq->qid);
 
-	rc = ap_send(aq->qid, 0x0102030405060708ULL, ap_msg.msg, ap_msg.len);
+	rc = ap_send(aq->qid, 0x0102030405060708UL, ap_msg.msg, ap_msg.len);
 	if (rc)
 		goto out_free;
 
@@ -217,7 +217,7 @@ static int zcrypt_cex2c_rng_supported(struct ap_queue *aq)
 	for (i = 0; i < 2 * HZ; i++) {
 		msleep(1000 / HZ);
 		rc = ap_recv(aq->qid, &psmid, ap_msg.msg, 4096);
-		if (rc == 0 && psmid == 0x0102030405060708ULL)
+		if (rc == 0 && psmid == 0x0102030405060708UL)
 			break;
 	}
 
diff --git a/drivers/s390/crypto/zcrypt_msgtype50.c b/drivers/s390/crypto/zcrypt_msgtype50.c
index 7d245645fdd5..1b6b60b7215b 100644
--- a/drivers/s390/crypto/zcrypt_msgtype50.c
+++ b/drivers/s390/crypto/zcrypt_msgtype50.c
@@ -476,7 +476,7 @@ static long zcrypt_cex2a_modexpo(struct zcrypt_queue *zq,
 	if (!ap_msg->msg)
 		return -ENOMEM;
 	ap_msg->receive = zcrypt_cex2a_receive;
-	ap_msg->psmid = (((unsigned long long)current->pid) << 32) +
+	ap_msg->psmid = (((unsigned long)current->pid) << 32) +
 		atomic_inc_return(&zcrypt_step);
 	ap_msg->private = &work;
 	rc = ICAMEX_msg_to_type50MEX_msg(zq, ap_msg, mex);
@@ -527,7 +527,7 @@ static long zcrypt_cex2a_modexpo_crt(struct zcrypt_queue *zq,
 	if (!ap_msg->msg)
 		return -ENOMEM;
 	ap_msg->receive = zcrypt_cex2a_receive;
-	ap_msg->psmid = (((unsigned long long)current->pid) << 32) +
+	ap_msg->psmid = (((unsigned long)current->pid) << 32) +
 		atomic_inc_return(&zcrypt_step);
 	ap_msg->private = &work;
 	rc = ICACRT_msg_to_type50CRT_msg(zq, ap_msg, crt);
diff --git a/drivers/s390/crypto/zcrypt_msgtype6.c b/drivers/s390/crypto/zcrypt_msgtype6.c
index a2e7fe33ba62..6c874808c356 100644
--- a/drivers/s390/crypto/zcrypt_msgtype6.c
+++ b/drivers/s390/crypto/zcrypt_msgtype6.c
@@ -1034,7 +1034,7 @@ static long zcrypt_msgtype6_modexpo(struct zcrypt_queue *zq,
 		return -ENOMEM;
 	ap_msg->bufsize = PAGE_SIZE;
 	ap_msg->receive = zcrypt_msgtype6_receive;
-	ap_msg->psmid = (((unsigned long long)current->pid) << 32) +
+	ap_msg->psmid = (((unsigned long)current->pid) << 32) +
 		atomic_inc_return(&zcrypt_step);
 	ap_msg->private = &resp_type;
 	rc = icamex_msg_to_type6mex_msgx(zq, ap_msg, mex);
@@ -1084,7 +1084,7 @@ static long zcrypt_msgtype6_modexpo_crt(struct zcrypt_queue *zq,
 		return -ENOMEM;
 	ap_msg->bufsize = PAGE_SIZE;
 	ap_msg->receive = zcrypt_msgtype6_receive;
-	ap_msg->psmid = (((unsigned long long)current->pid) << 32) +
+	ap_msg->psmid = (((unsigned long)current->pid) << 32) +
 		atomic_inc_return(&zcrypt_step);
 	ap_msg->private = &resp_type;
 	rc = icacrt_msg_to_type6crt_msgx(zq, ap_msg, crt);
@@ -1135,7 +1135,7 @@ int prep_cca_ap_msg(bool userspace, struct ica_xcRB *xcrb,
 	if (!ap_msg->msg)
 		return -ENOMEM;
 	ap_msg->receive = zcrypt_msgtype6_receive;
-	ap_msg->psmid = (((unsigned long long)current->pid) << 32) +
+	ap_msg->psmid = (((unsigned long)current->pid) << 32) +
 				atomic_inc_return(&zcrypt_step);
 	ap_msg->private = kmemdup(&resp_type, sizeof(resp_type), GFP_KERNEL);
 	if (!ap_msg->private)
@@ -1216,7 +1216,7 @@ int prep_ep11_ap_msg(bool userspace, struct ep11_urb *xcrb,
 	if (!ap_msg->msg)
 		return -ENOMEM;
 	ap_msg->receive = zcrypt_msgtype6_receive_ep11;
-	ap_msg->psmid = (((unsigned long long)current->pid) << 32) +
+	ap_msg->psmid = (((unsigned long)current->pid) << 32) +
 				atomic_inc_return(&zcrypt_step);
 	ap_msg->private = kmemdup(&resp_type, sizeof(resp_type), GFP_KERNEL);
 	if (!ap_msg->private)
@@ -1326,7 +1326,7 @@ int prep_rng_ap_msg(struct ap_message *ap_msg, int *func_code,
 	if (!ap_msg->msg)
 		return -ENOMEM;
 	ap_msg->receive = zcrypt_msgtype6_receive;
-	ap_msg->psmid = (((unsigned long long)current->pid) << 32) +
+	ap_msg->psmid = (((unsigned long)current->pid) << 32) +
 				atomic_inc_return(&zcrypt_step);
 	ap_msg->private = kmemdup(&resp_type, sizeof(resp_type), GFP_KERNEL);
 	if (!ap_msg->private)