Index: uspace/lib/c/include/ddi.h
===================================================================
--- uspace/lib/c/include/ddi.h	(revision 7c3fb9bd77e4d2f6c10517a052e567f176fa91ee)
+++ uspace/lib/c/include/ddi.h	(revision 4e2d3870f8b872e7f87d75db6ec68ab29fe7a859)
@@ -64,5 +64,6 @@
 
 extern errno_t pio_enable_range(addr_range_t *, void **);
-extern errno_t pio_enable_resource(pio_window_t *, hw_resource_t *, void **);
+extern errno_t pio_enable_resource(pio_window_t *, hw_resource_t *, void **,
+    size_t *);
 extern errno_t pio_enable(void *, size_t, void **);
 extern errno_t pio_disable(void *, size_t);