Index: src/sys/powerpc/powermac/ata_kauai.c
===================================================================
--- src/sys/powerpc/powermac/ata_kauai.c	(revision 46)
+++ src/sys/powerpc/powermac/ata_kauai.c	(working copy)
@@ -90,10 +90,11 @@
 
 DRIVER_MODULE(ata, pci, ata_kauai_driver, ata_devclass, 0, 0);
 
-static void
+static int
 ata_kauai_locknoop(struct ata_channel *ch, int type)
 {
 	/* XXX SMP ? */
+	return (0);
 }
 
 static void
Index: src/sys/powerpc/powermac/ata_macio.c
===================================================================
--- src/sys/powerpc/powermac/ata_macio.c	(revision 46)
+++ src/sys/powerpc/powermac/ata_macio.c	(working copy)
@@ -80,10 +80,11 @@
 
 DRIVER_MODULE(ata, macio, ata_macio_driver, ata_devclass, 0, 0);
 
-static void
+static int
 ata_macio_locknoop(struct ata_channel *ch, int type)
 {
 	/* XXX SMP ? */
+	return (0);
 }
 
 static void