Index: kernel/arch/sparc64/include/types.h
===================================================================
--- kernel/arch/sparc64/include/types.h	(revision b755225b228b383f0b91e692e42e4789bac12916)
+++ kernel/arch/sparc64/include/types.h	(revision 06b2b7feafe67264246ca70e9c1b4f4fb6eefb3c)
@@ -55,8 +55,8 @@
 typedef uint64_t ipl_t;
 
-typedef uint64_t ioport_t;
-
 typedef uint64_t unative_t;
 typedef int64_t native_t;
+
+typedef uintptr_t ioport_t;
 
 /**< Formats for uintptr_t, size_t, count_t and index_t */