diff mbox

ACPICA: Fix Scope() op in module level code

Message ID 1287736022.6530.3216.camel@minggr.sh.intel.com (mailing list archive)
State New, archived
Headers show

Commit Message

Lin Ming Oct. 22, 2010, 8:27 a.m. UTC
None
diff mbox

Patch

diff --git a/drivers/acpi/acpica/dswexec.c b/drivers/acpi/acpica/dswexec.c
index d555b37..6b0b5d0 100644
--- a/drivers/acpi/acpica/dswexec.c
+++ b/drivers/acpi/acpica/dswexec.c
@@ -300,10 +300,25 @@  acpi_ds_exec_begin_op(struct acpi_walk_state *walk_state,
 			 * we must enter this object into the namespace.  The created
 			 * object is temporary and will be deleted upon completion of
 			 * the execution of this method.
+			 *
+			 * Note 10/2010: Except for the Scope() op. This opcode does
+			 * not actually create a new object, it refers to an existing
+			 * object. However, for Scope(), we want to indeed open a
+			 * new scope.
 			 */
-			status = acpi_ds_load2_begin_op(walk_state, NULL);
+			if (op->common.aml_opcode != AML_SCOPE_OP) {
+				status =
+				    acpi_ds_load2_begin_op(walk_state, NULL);
+			} else {
+				status =
+				    acpi_ds_scope_stack_push(op->named.node,
+							     op->named.node->
+							     type, walk_state);
+				if (ACPI_FAILURE(status)) {
+					return_ACPI_STATUS(status);
+				}
+			}
 		}
-
 		break;
 
 	case AML_CLASS_EXECUTE: