diff -BruN linux-2.6.5/drivers/acpi/parser/psparse.c linux-2.6.5-hack/drivers/acpi/parser/psparse.c
--- linux-2.6.5/drivers/acpi/parser/psparse.c	2004-04-03 22:36:25.000000000 -0500
+++ linux-2.6.5-hack/drivers/acpi/parser/psparse.c	2004-04-26 09:54:02.148220528 -0400
@@ -1111,7 +1111,10 @@
 			"Completed one call to walk loop, %s State=%p\n",
 			acpi_format_exception (status), walk_state));
 
-		if (status == AE_CTRL_TRANSFER) {
+		if ((status == AE_CTRL_TRANSFER) ||
+		    (status == AE_AML_NO_RETURN_VALUE) || 
+		    (status == AE_AML_UNINITIALIZED_ARG) ||
+		    (status == AE_AML_UNINITIALIZED_LOCAL) ) {
 			/*
 			 * A method call was detected.
 			 * Transfer control to the called control method