diff --git a/sys/arm/arm/busdma_machdep.c b/sys/arm/arm/busdma_machdep.c
--- a/sys/arm/arm/busdma_machdep.c
+++ b/sys/arm/arm/busdma_machdep.c
@@ -240,7 +240,7 @@
  * express, so we take a fast out.
  */
 static int
-exclusion_bounce_check(vm_offset_t lowaddr, vm_offset_t highaddr)
+exclusion_bounce_check(bus_addr_t lowaddr, bus_addr_t highaddr)
 {
 	int i;