diff --git a/sys/arm/broadcom/bcm2835/bcm2835_audio.c b/sys/arm/broadcom/bcm2835/bcm2835_audio.c
--- a/sys/arm/broadcom/bcm2835/bcm2835_audio.c
+++ b/sys/arm/broadcom/bcm2835/bcm2835_audio.c
@@ -260,8 +260,9 @@
 					device_printf(sc->dev, "available_space == %d, count = %d, perr=%d\n",
 					    ch->available_space, count, perr);
 					device_printf(sc->dev,
-					    "retrieved_samples = %lld, submitted_samples = %lld\n",
-					    ch->retrieved_samples, ch->submitted_samples);
+					    "retrieved_samples = %ju, submitted_samples = %ju\n",
+					    (uintmax_t)ch->retrieved_samples,
+					    (uintmax_t)ch->submitted_samples);
 				}
 				ch->available_space += count;
 				ch->retrieved_samples += count;
diff --git a/sys/contrib/vchiq/interface/vchiq_arm/vchiq_2835_arm.c b/sys/contrib/vchiq/interface/vchiq_arm/vchiq_2835_arm.c
--- a/sys/contrib/vchiq/interface/vchiq_arm/vchiq_2835_arm.c
+++ b/sys/contrib/vchiq/interface/vchiq_arm/vchiq_2835_arm.c
@@ -204,8 +204,8 @@
 	bcm_mbox_write(BCM2835_MBOX_CHAN_VCHIQ, (unsigned int)g_slot_phys);
 
 	vchiq_log_info(vchiq_arm_log_level,
-		"vchiq_init - done (slots %x, phys %x)",
-		(unsigned int)vchiq_slot_zero, g_slot_phys);
+		"vchiq_init - done (slots %zx, phys %zx)",
+		(size_t)vchiq_slot_zero, g_slot_phys);
 
    vchiq_call_connected_callbacks();
 
@@ -451,10 +451,7 @@
 	}
 
 	vchiq_log_trace(vchiq_arm_log_level,
-		"create_pagelist - %x (%d bytes @%p)", (unsigned int)pagelist, count, buf);
-
-	if (!pagelist)
-		return -ENOMEM;
+		"create_pagelist - %zx (%zu bytes @%p)", (size_t)pagelist, count, buf);
 
 	addrs = pagelist->addrs;
 	pages = (vm_page_t*)(addrs + num_pages);
@@ -549,7 +546,7 @@
 	pagelist = bi->pagelist;
 
 	vchiq_log_trace(vchiq_arm_log_level,
-		"free_pagelist - %x, %d (%lu bytes @%p)", (unsigned int)pagelist, actual, pagelist->length, bi->buf);
+		"free_pagelist - %zx, %d (%u bytes @%p)", (size_t)pagelist, actual, pagelist->length, bi->buf);
 
 	num_pages =
 		(pagelist->length + pagelist->offset + PAGE_SIZE - 1) /
diff --git a/sys/contrib/vchiq/interface/vchiq_arm/vchiq_arm.c b/sys/contrib/vchiq/interface/vchiq_arm/vchiq_arm.c
--- a/sys/contrib/vchiq/interface/vchiq_arm/vchiq_arm.c
+++ b/sys/contrib/vchiq/interface/vchiq_arm/vchiq_arm.c
@@ -442,8 +442,8 @@
 #define	_IOC_TYPE(x)	IOCGROUP(x)
 
 	vchiq_log_trace(vchiq_arm_log_level,
-		 "vchiq_ioctl - instance %x, cmd %s, arg %p",
-		(unsigned int)instance,
+		 "vchiq_ioctl - instance %zx, cmd %s, arg %p",
+		(size_t)instance,
 		((_IOC_TYPE(cmd) == VCHIQ_IOC_MAGIC) &&
 		(_IOC_NR(cmd) <= VCHIQ_IOC_MAX)) ?
 		ioctl_names[_IOC_NR(cmd)] : "<invalid>", arg);
@@ -745,8 +745,8 @@
 				break;
 			}
 			vchiq_log_info(vchiq_arm_log_level,
-				"found bulk_waiter %x for pid %d",
-				(unsigned int)waiter, current->p_pid);
+				"found bulk_waiter %zx for pid %d",
+				(size_t)waiter, current->p_pid);
 			args.userdata = &waiter->bulk_waiter;
 		}
 		status = vchiq_bulk_transfer
@@ -776,8 +776,8 @@
 			list_add(&waiter->list, &instance->bulk_waiter_list);
 			lmutex_unlock(&instance->bulk_waiter_list_mutex);
 			vchiq_log_info(vchiq_arm_log_level,
-				"saved bulk_waiter %x for pid %d",
-				(unsigned int)waiter, current->p_pid);
+				"saved bulk_waiter %zx for pid %d",
+				(size_t)waiter, current->p_pid);
 
 			memcpy((void *)
 				&(((VCHIQ_QUEUE_BULK_TRANSFER_T *)
@@ -860,9 +860,9 @@
 					if (args.msgbufsize < msglen) {
 						vchiq_log_error(
 							vchiq_arm_log_level,
-							"header %x: msgbufsize"
+							"header %zx: msgbufsize"
 							" %x < msglen %x",
-							(unsigned int)header,
+							(size_t)header,
 							args.msgbufsize,
 							msglen);
 						WARN(1, "invalid message "
@@ -1031,8 +1031,8 @@
 				ret = -EFAULT;
 		} else {
 			vchiq_log_error(vchiq_arm_log_level,
-				"header %x: bufsize %x < size %x",
-				(unsigned int)header, args.bufsize,
+				"header %zx: bufsize %x < size %x",
+				(size_t)header, args.bufsize,
 				header->size);
 			WARN(1, "invalid size\n");
 			ret = -EMSGSIZE;
@@ -1435,9 +1435,9 @@
 			instance = service->instance;
 			if (instance && !instance->mark) {
 				len = snprintf(buf, sizeof(buf),
-					"Instance %x: pid %d,%s completions "
+					"Instance %zx: pid %d,%s completions "
 						"%d/%d",
-					(unsigned int)instance, instance->pid,
+					(size_t)instance, instance->pid,
 					instance->connected ? " connected, " :
 						"",
 					instance->completion_insert -
@@ -1465,8 +1465,8 @@
 	char buf[80];
 	int len;
 
-	len = snprintf(buf, sizeof(buf), "  instance %x",
-		(unsigned int)service->instance);
+	len = snprintf(buf, sizeof(buf), "  instance %zx",
+		(size_t)service->instance);
 
 	if ((service->base.callback == service_callback) &&
 		user_service->is_vchi) {