[ACPI] merge acpi-2.6.12 branch into latest Linux 2.6.13-rc...

Signed-off-by: Len Brown <len.brown@intel.com>

11 files changed, 684 insertions, 497 deletions

diff --git a/drivers/acpi/dispatcher/dsfield.c b/drivers/acpi/dispatcher/dsfield.c
index 2779211be756..84193983d6ba 100644
--- a/drivers/acpi/dispatcher/dsfield.c
+++ b/drivers/acpi/dispatcher/dsfield.c
@@ -53,13 +53,20 @@
 #define _COMPONENT          ACPI_DISPATCHER
 	 ACPI_MODULE_NAME    ("dsfield")
 
+/* Local prototypes */
+
+static acpi_status
+acpi_ds_get_field_names (
+	struct acpi_create_field_info   *info,
+	struct acpi_walk_state          *walk_state,
+	union acpi_parse_object         *arg);
+
 
 /*******************************************************************************
  *
  * FUNCTION:    acpi_ds_create_buffer_field
  *
- * PARAMETERS:  Opcode              - The opcode to be executed
- *              Operands            - List of operands for the opcode
+ * PARAMETERS:  Op                  - Current parse op (create_xXField)
  *              walk_state          - Current state
  *
  * RETURN:      Status
@@ -70,7 +77,7 @@
  *              create_word_field_op,
  *              create_dword_field_op,
  *              create_qword_field_op,
- *              create_field_op     (all of which define fields in buffers)
+ *              create_field_op     (all of which define a field in a buffer)
  *
  ******************************************************************************/
 
@@ -119,7 +126,8 @@ acpi_ds_create_buffer_field (
 			flags = ACPI_NS_NO_UPSEARCH | ACPI_NS_DONT_OPEN_SCOPE;
 		}
 		else {
-			flags = ACPI_NS_NO_UPSEARCH | ACPI_NS_DONT_OPEN_SCOPE | ACPI_NS_ERROR_IF_FOUND;
+			flags = ACPI_NS_NO_UPSEARCH | ACPI_NS_DONT_OPEN_SCOPE |
+					ACPI_NS_ERROR_IF_FOUND;
 		}
 
 		/*
@@ -134,16 +142,16 @@ acpi_ds_create_buffer_field (
 		}
 	}
 
-	/* We could put the returned object (Node) on the object stack for later, but
-	 * for now, we will put it in the "op" object that the parser uses, so we
-	 * can get it again at the end of this scope
+	/* We could put the returned object (Node) on the object stack for later,
+	 * but for now, we will put it in the "op" object that the parser uses,
+	 * so we can get it again at the end of this scope
 	 */
 	op->common.node = node;
 
 	/*
-	 * If there is no object attached to the node, this node was just created and
-	 * we need to create the field object.  Otherwise, this was a lookup of an
-	 * existing node and we don't want to create the field object again.
+	 * If there is no object attached to the node, this node was just created
+	 * and we need to create the field object.  Otherwise, this was a lookup
+	 * of an existing node and we don't want to create the field object again.
 	 */
 	obj_desc = acpi_ns_get_attached_object (node);
 	if (obj_desc) {
@@ -205,7 +213,7 @@ cleanup:
  *
  ******************************************************************************/
 
-acpi_status
+static acpi_status
 acpi_ds_get_field_names (
 	struct acpi_create_field_info   *info,
 	struct acpi_walk_state          *walk_state,
@@ -238,7 +246,8 @@ acpi_ds_get_field_names (
 					 + (acpi_integer) arg->common.value.size;
 
 			if (position > ACPI_UINT32_MAX) {
-				ACPI_REPORT_ERROR (("Bit offset within field too large (> 0xFFFFFFFF)\n"));
+				ACPI_REPORT_ERROR ((
+					"Bit offset within field too large (> 0xFFFFFFFF)\n"));
 				return_ACPI_STATUS (AE_SUPPORT);
 			}
 
@@ -250,12 +259,15 @@ acpi_ds_get_field_names (
 
 			/*
 			 * Get a new access_type and access_attribute -- to be used for all
-			 * field units that follow, until field end or another access_as keyword.
+			 * field units that follow, until field end or another access_as
+			 * keyword.
 			 *
-			 * In field_flags, preserve the flag bits other than the ACCESS_TYPE bits
+			 * In field_flags, preserve the flag bits other than the
+			 * ACCESS_TYPE bits
 			 */
-			info->field_flags = (u8) ((info->field_flags & ~(AML_FIELD_ACCESS_TYPE_MASK)) |
-					  ((u8) ((u32) arg->common.value.integer >> 8)));
+			info->field_flags = (u8)
+				((info->field_flags & ~(AML_FIELD_ACCESS_TYPE_MASK)) |
+				((u8) ((u32) arg->common.value.integer >> 8)));
 
 			info->attribute = (u8) (arg->common.value.integer);
 			break;
@@ -267,7 +279,8 @@ acpi_ds_get_field_names (
 
 			status = acpi_ns_lookup (walk_state->scope_info,
 					  (char *) &arg->named.name,
-					  info->field_type, ACPI_IMODE_EXECUTE, ACPI_NS_DONT_OPEN_SCOPE,
+					  info->field_type, ACPI_IMODE_EXECUTE,
+					  ACPI_NS_DONT_OPEN_SCOPE,
 					  walk_state, &info->field_node);
 			if (ACPI_FAILURE (status)) {
 				ACPI_REPORT_NSERROR ((char *) &arg->named.name, status);
@@ -295,8 +308,9 @@ acpi_ds_get_field_names (
 					 + (acpi_integer) arg->common.value.size;
 
 			if (position > ACPI_UINT32_MAX) {
-				ACPI_REPORT_ERROR (("Field [%4.4s] bit offset too large (> 0xFFFFFFFF)\n",
-						(char *) &info->field_node->name));
+				ACPI_REPORT_ERROR ((
+					"Field [%4.4s] bit offset too large (> 0xFFFFFFFF)\n",
+					(char *) &info->field_node->name));
 				return_ACPI_STATUS (AE_SUPPORT);
 			}
 
@@ -306,7 +320,8 @@ acpi_ds_get_field_names (
 
 		default:
 
-			ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Invalid opcode in field list: %X\n",
+			ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+				"Invalid opcode in field list: %X\n",
 				arg->common.aml_opcode));
 			return_ACPI_STATUS (AE_AML_BAD_OPCODE);
 		}
@@ -435,7 +450,8 @@ acpi_ds_init_field_objects (
 			status = acpi_ns_lookup (walk_state->scope_info,
 					  (char *) &arg->named.name,
 					  type, ACPI_IMODE_LOAD_PASS1,
-					  ACPI_NS_NO_UPSEARCH | ACPI_NS_DONT_OPEN_SCOPE | ACPI_NS_ERROR_IF_FOUND,
+					  ACPI_NS_NO_UPSEARCH | ACPI_NS_DONT_OPEN_SCOPE |
+					  ACPI_NS_ERROR_IF_FOUND,
 					  walk_state, &node);
 			if (ACPI_FAILURE (status)) {
 				ACPI_REPORT_NSERROR ((char *) &arg->named.name, status);
diff --git a/drivers/acpi/dispatcher/dsinit.c b/drivers/acpi/dispatcher/dsinit.c
index b4d264dbbf67..d7790db50178 100644
--- a/drivers/acpi/dispatcher/dsinit.c
+++ b/drivers/acpi/dispatcher/dsinit.c
@@ -49,12 +49,21 @@
 #define _COMPONENT          ACPI_DISPATCHER
 	 ACPI_MODULE_NAME    ("dsinit")
 
+/* Local prototypes */
+
+static acpi_status
+acpi_ds_init_one_object (
+	acpi_handle                     obj_handle,
+	u32                             level,
+	void                            *context,
+	void                            **return_value);
+
 
 /*******************************************************************************
  *
  * FUNCTION:    acpi_ds_init_one_object
  *
- * PARAMETERS:  obj_handle      - Node
+ * PARAMETERS:  obj_handle      - Node for the object
  *              Level           - Current nesting level
  *              Context         - Points to a init info struct
  *              return_value    - Not used
@@ -70,7 +79,7 @@
  *
  ******************************************************************************/
 
-acpi_status
+static acpi_status
 acpi_ds_init_one_object (
 	acpi_handle                     obj_handle,
 	u32                             level,
@@ -105,7 +114,8 @@ acpi_ds_init_one_object (
 
 		status = acpi_ds_initialize_region (obj_handle);
 		if (ACPI_FAILURE (status)) {
-			ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Region %p [%4.4s] - Init failure, %s\n",
+			ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+				"Region %p [%4.4s] - Init failure, %s\n",
 				obj_handle, acpi_ut_get_node_name (obj_handle),
 				acpi_format_exception (status)));
 		}
@@ -118,8 +128,10 @@ acpi_ds_init_one_object (
 
 		info->method_count++;
 
-		/* Print a dot for each method unless we are going to print the entire pathname */
-
+		/*
+		 * Print a dot for each method unless we are going to print
+		 * the entire pathname
+		 */
 		if (!(acpi_dbg_level & ACPI_LV_INIT_NAMES)) {
 			ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT, "."));
 		}
@@ -140,7 +152,8 @@ acpi_ds_init_one_object (
 		 */
 		status = acpi_ds_parse_method (obj_handle);
 		if (ACPI_FAILURE (status)) {
-			ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Method %p [%4.4s] - parse failure, %s\n",
+			ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+				"Method %p [%4.4s] - parse failure, %s\n",
 				obj_handle, acpi_ut_get_node_name (obj_handle),
 				acpi_format_exception (status)));
 
@@ -154,7 +167,8 @@ acpi_ds_init_one_object (
 		 * for every execution since there isn't much overhead
 		 */
 		acpi_ns_delete_namespace_subtree (obj_handle);
-		acpi_ns_delete_namespace_by_owner (((struct acpi_namespace_node *) obj_handle)->object->method.owning_id);
+		acpi_ns_delete_namespace_by_owner (
+			((struct acpi_namespace_node *) obj_handle)->object->method.owning_id);
 		break;
 
 
diff --git a/drivers/acpi/dispatcher/dsmethod.c b/drivers/acpi/dispatcher/dsmethod.c
index 9f0456cb9bb5..9fc3f4c033eb 100644
--- a/drivers/acpi/dispatcher/dsmethod.c
+++ b/drivers/acpi/dispatcher/dsmethod.c
@@ -153,12 +153,11 @@ acpi_ds_parse_method (
 	/*
 	 * Parse the method, first pass
 	 *
-	 * The first pass load is where newly declared named objects are
-	 * added into the namespace.  Actual evaluation of
-	 * the named objects (what would be called a "second
-	 * pass") happens during the actual execution of the
-	 * method so that operands to the named objects can
-	 * take on dynamic run-time values.
+	 * The first pass load is where newly declared named objects are added into
+	 * the namespace.  Actual evaluation of the named objects (what would be
+	 * called a "second pass") happens during the actual execution of the
+	 * method so that operands to the named objects can take on dynamic
+	 * run-time values.
 	 */
 	status = acpi_ps_parse_aml (walk_state);
 	if (ACPI_FAILURE (status)) {
diff --git a/drivers/acpi/dispatcher/dsmthdat.c b/drivers/acpi/dispatcher/dsmthdat.c
index f31d095f9833..f7998306f756 100644
--- a/drivers/acpi/dispatcher/dsmthdat.c
+++ b/drivers/acpi/dispatcher/dsmthdat.c
@@ -52,6 +52,29 @@
 #define _COMPONENT          ACPI_DISPATCHER
 	 ACPI_MODULE_NAME    ("dsmthdat")
 
+/* Local prototypes */
+
+static void
+acpi_ds_method_data_delete_value (
+	u16                             opcode,
+	u32                             index,
+	struct acpi_walk_state          *walk_state);
+
+static acpi_status
+acpi_ds_method_data_set_value (
+	u16                             opcode,
+	u32                             index,
+	union acpi_operand_object       *object,
+	struct acpi_walk_state          *walk_state);
+
+#ifdef ACPI_OBSOLETE_FUNCTIONS
+acpi_object_type
+acpi_ds_method_data_get_type (
+	u16                             opcode,
+	u32                             index,
+	struct acpi_walk_state          *walk_state);
+#endif
+
 
 /*******************************************************************************
  *
@@ -62,8 +85,8 @@
  * RETURN:      Status
  *
  * DESCRIPTION: Initialize the data structures that hold the method's arguments
- *              and locals.  The data struct is an array of NTEs for each.
- *              This allows ref_of and de_ref_of to work properly for these
+ *              and locals.  The data struct is an array of namespace nodes for
+ *              each - this allows ref_of and de_ref_of to work properly for these
  *              special data types.
  *
  * NOTES:       walk_state fields are initialized to zero by the
@@ -92,7 +115,8 @@ acpi_ds_method_data_init (
 		walk_state->arguments[i].name.integer |= (i << 24);
 		walk_state->arguments[i].descriptor   = ACPI_DESC_TYPE_NAMED;
 		walk_state->arguments[i].type         = ACPI_TYPE_ANY;
-		walk_state->arguments[i].flags        = ANOBJ_END_OF_PEER_LIST | ANOBJ_METHOD_ARG;
+		walk_state->arguments[i].flags        = ANOBJ_END_OF_PEER_LIST |
+				  ANOBJ_METHOD_ARG;
 	}
 
 	/* Init the method locals */
@@ -104,7 +128,8 @@ acpi_ds_method_data_init (
 		walk_state->local_variables[i].name.integer |= (i << 24);
 		walk_state->local_variables[i].descriptor  = ACPI_DESC_TYPE_NAMED;
 		walk_state->local_variables[i].type        = ACPI_TYPE_ANY;
-		walk_state->local_variables[i].flags       = ANOBJ_END_OF_PEER_LIST | ANOBJ_METHOD_LOCAL;
+		walk_state->local_variables[i].flags       = ANOBJ_END_OF_PEER_LIST |
+				 ANOBJ_METHOD_LOCAL;
 	}
 
 	return_VOID;
@@ -198,15 +223,18 @@ acpi_ds_method_data_init_args (
 		return_ACPI_STATUS (AE_OK);
 	}
 
-	/* Copy passed parameters into the new method stack frame  */
+	/* Copy passed parameters into the new method stack frame */
 
-	while ((index < ACPI_METHOD_NUM_ARGS) && (index < max_param_count) && params[index]) {
+	while ((index < ACPI_METHOD_NUM_ARGS) &&
+		   (index < max_param_count)      &&
+			params[index]) {
 		/*
 		 * A valid parameter.
 		 * Store the argument in the method/walk descriptor.
 		 * Do not copy the arg in order to implement call by reference
 		 */
-		status = acpi_ds_method_data_set_value (AML_ARG_OP, index, params[index], walk_state);
+		status = acpi_ds_method_data_set_value (AML_ARG_OP, index,
+				 params[index], walk_state);
 		if (ACPI_FAILURE (status)) {
 			return_ACPI_STATUS (status);
 		}
@@ -224,11 +252,13 @@ acpi_ds_method_data_init_args (
  * FUNCTION:    acpi_ds_method_data_get_node
  *
  * PARAMETERS:  Opcode              - Either AML_LOCAL_OP or AML_ARG_OP
- *              Index               - which local_var or argument whose type
- *                                      to get
+ *              Index               - Which Local or Arg whose type to get
  *              walk_state          - Current walk state object
+ *              Node                - Where the node is returned.
  *
- * RETURN:      Get the Node associated with a local or arg.
+ * RETURN:      Status and node
+ *
+ * DESCRIPTION: Get the Node associated with a local or arg.
  *
  ******************************************************************************/
 
@@ -249,7 +279,8 @@ acpi_ds_method_data_get_node (
 	case AML_LOCAL_OP:
 
 		if (index > ACPI_METHOD_MAX_LOCAL) {
-			ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Local index %d is invalid (max %d)\n",
+			ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+				"Local index %d is invalid (max %d)\n",
 				index, ACPI_METHOD_MAX_LOCAL));
 			return_ACPI_STATUS (AE_AML_INVALID_INDEX);
 		}
@@ -262,7 +293,8 @@ acpi_ds_method_data_get_node (
 	case AML_ARG_OP:
 
 		if (index > ACPI_METHOD_MAX_ARG) {
-			ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Arg index %d is invalid (max %d)\n",
+			ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+				"Arg index %d is invalid (max %d)\n",
 				index, ACPI_METHOD_MAX_ARG));
 			return_ACPI_STATUS (AE_AML_INVALID_INDEX);
 		}
@@ -286,7 +318,7 @@ acpi_ds_method_data_get_node (
  * FUNCTION:    acpi_ds_method_data_set_value
  *
  * PARAMETERS:  Opcode              - Either AML_LOCAL_OP or AML_ARG_OP
- *              Index               - which local_var or argument to get
+ *              Index               - Which Local or Arg to get
  *              Object              - Object to be inserted into the stack entry
  *              walk_state          - Current walk state object
  *
@@ -297,7 +329,7 @@ acpi_ds_method_data_get_node (
  *
  ******************************************************************************/
 
-acpi_status
+static acpi_status
 acpi_ds_method_data_set_value (
 	u16                             opcode,
 	u32                             index,
@@ -340,68 +372,16 @@ acpi_ds_method_data_set_value (
 
 /*******************************************************************************
  *
- * FUNCTION:    acpi_ds_method_data_get_type
- *
- * PARAMETERS:  Opcode              - Either AML_LOCAL_OP or AML_ARG_OP
- *              Index               - which local_var or argument whose type
- *                                      to get
- *              walk_state          - Current walk state object
- *
- * RETURN:      Data type of current value of the selected Arg or Local
- *
- ******************************************************************************/
-#ifdef ACPI_FUTURE_USAGE
-acpi_object_type
-acpi_ds_method_data_get_type (
-	u16                             opcode,
-	u32                             index,
-	struct acpi_walk_state          *walk_state)
-{
-	acpi_status                     status;
-	struct acpi_namespace_node      *node;
-	union acpi_operand_object       *object;
-
-
-	ACPI_FUNCTION_TRACE ("ds_method_data_get_type");
-
-
-	/* Get the namespace node for the arg/local */
-
-	status = acpi_ds_method_data_get_node (opcode, index, walk_state, &node);
-	if (ACPI_FAILURE (status)) {
-		return_VALUE ((ACPI_TYPE_NOT_FOUND));
-	}
-
-	/* Get the object */
-
-	object = acpi_ns_get_attached_object (node);
-	if (!object) {
-		/* Uninitialized local/arg, return TYPE_ANY */
-
-		return_VALUE (ACPI_TYPE_ANY);
-	}
-
-	/* Get the object type */
-
-	return_VALUE (ACPI_GET_OBJECT_TYPE (object));
-}
-#endif  /*  ACPI_FUTURE_USAGE  */
-
-
-/*******************************************************************************
- *
  * FUNCTION:    acpi_ds_method_data_get_value
  *
  * PARAMETERS:  Opcode              - Either AML_LOCAL_OP or AML_ARG_OP
  *              Index               - which local_var or argument to get
  *              walk_state          - Current walk state object
- *              *dest_desc          - Ptr to Descriptor into which selected Arg
- *                                    or Local value should be copied
+ *              dest_desc           - Where Arg or Local value is returned
  *
  * RETURN:      Status
  *
- * DESCRIPTION: Retrieve value of selected Arg or Local from the method frame
- *              at the current top of the method stack.
+ * DESCRIPTION: Retrieve value of selected Arg or Local for this method
  *              Used only in acpi_ex_resolve_to_value().
  *
  ******************************************************************************/
@@ -467,14 +447,16 @@ acpi_ds_method_data_get_value (
 		else switch (opcode) {
 		case AML_ARG_OP:
 
-			ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Uninitialized Arg[%d] at node %p\n",
+			ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+				"Uninitialized Arg[%d] at node %p\n",
 				index, node));
 
 			return_ACPI_STATUS (AE_AML_UNINITIALIZED_ARG);
 
 		case AML_LOCAL_OP:
 
-			ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Uninitialized Local[%d] at node %p\n",
+			ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+				"Uninitialized Local[%d] at node %p\n",
 				index, node));
 
 			return_ACPI_STATUS (AE_AML_UNINITIALIZED_LOCAL);
@@ -506,12 +488,12 @@ acpi_ds_method_data_get_value (
  *
  * RETURN:      None
  *
- * DESCRIPTION: Delete the entry at Opcode:Index on the method stack.  Inserts
+ * DESCRIPTION: Delete the entry at Opcode:Index.  Inserts
  *              a null into the stack slot after the object is deleted.
  *
  ******************************************************************************/
 
-void
+static void
 acpi_ds_method_data_delete_value (
 	u16                             opcode,
 	u32                             index,
@@ -562,7 +544,7 @@ acpi_ds_method_data_delete_value (
  * FUNCTION:    acpi_ds_store_object_to_local
  *
  * PARAMETERS:  Opcode              - Either AML_LOCAL_OP or AML_ARG_OP
- *              Index               - which local_var or argument to set
+ *              Index               - Which Local or Arg to set
  *              obj_desc            - Value to be stored
  *              walk_state          - Current walk state
  *
@@ -651,19 +633,20 @@ acpi_ds_store_object_to_local (
 		 */
 		if (opcode == AML_ARG_OP) {
 			/*
-			 * Make sure that the object is the correct type.  This may be overkill, but
-			 * it is here because references were NS nodes in the past.  Now they are
-			 * operand objects of type Reference.
+			 * Make sure that the object is the correct type.  This may be
+			 * overkill, butit is here because references were NS nodes in
+			 *  the past.  Now they are operand objects of type Reference.
 			 */
 			if (ACPI_GET_DESCRIPTOR_TYPE (current_obj_desc) != ACPI_DESC_TYPE_OPERAND) {
-				ACPI_REPORT_ERROR (("Invalid descriptor type while storing to method arg: [%s]\n",
-						acpi_ut_get_descriptor_name (current_obj_desc)));
+				ACPI_REPORT_ERROR ((
+					"Invalid descriptor type while storing to method arg: [%s]\n",
+					acpi_ut_get_descriptor_name (current_obj_desc)));
 				return_ACPI_STATUS (AE_AML_INTERNAL);
 			}
 
 			/*
-			 * If we have a valid reference object that came from ref_of(), do the
-			 * indirect store
+			 * If we have a valid reference object that came from ref_of(),
+			 * do the indirect store
 			 */
 			if ((current_obj_desc->common.type == ACPI_TYPE_LOCAL_REFERENCE) &&
 				(current_obj_desc->reference.opcode == AML_REF_OF_OP)) {
@@ -713,3 +696,55 @@ acpi_ds_store_object_to_local (
 }
 
 
+#ifdef ACPI_OBSOLETE_FUNCTIONS
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ds_method_data_get_type
+ *
+ * PARAMETERS:  Opcode              - Either AML_LOCAL_OP or AML_ARG_OP
+ *              Index               - Which Local or Arg whose type to get
+ *              walk_state          - Current walk state object
+ *
+ * RETURN:      Data type of current value of the selected Arg or Local
+ *
+ * DESCRIPTION: Get the type of the object stored in the Local or Arg
+ *
+ ******************************************************************************/
+
+acpi_object_type
+acpi_ds_method_data_get_type (
+	u16                             opcode,
+	u32                             index,
+	struct acpi_walk_state          *walk_state)
+{
+	acpi_status                     status;
+	struct acpi_namespace_node      *node;
+	union acpi_operand_object       *object;
+
+
+	ACPI_FUNCTION_TRACE ("ds_method_data_get_type");
+
+
+	/* Get the namespace node for the arg/local */
+
+	status = acpi_ds_method_data_get_node (opcode, index, walk_state, &node);
+	if (ACPI_FAILURE (status)) {
+		return_VALUE ((ACPI_TYPE_NOT_FOUND));
+	}
+
+	/* Get the object */
+
+	object = acpi_ns_get_attached_object (node);
+	if (!object) {
+		/* Uninitialized local/arg, return TYPE_ANY */
+
+		return_VALUE (ACPI_TYPE_ANY);
+	}
+
+	/* Get the object type */
+
+	return_VALUE (ACPI_GET_OBJECT_TYPE (object));
+}
+#endif
+
+
diff --git a/drivers/acpi/dispatcher/dsobject.c b/drivers/acpi/dispatcher/dsobject.c
index eb8af4785bcb..bfbae4e4c667 100644
--- a/drivers/acpi/dispatcher/dsobject.c
+++ b/drivers/acpi/dispatcher/dsobject.c
@@ -52,9 +52,15 @@
 #define _COMPONENT          ACPI_DISPATCHER
 	 ACPI_MODULE_NAME    ("dsobject")
 
+static acpi_status
+acpi_ds_build_internal_object (
+	struct acpi_walk_state          *walk_state,
+	union acpi_parse_object         *op,
+	union acpi_operand_object       **obj_desc_ptr);
+
 
 #ifndef ACPI_NO_METHOD_EXECUTION
-/*****************************************************************************
+/*******************************************************************************
  *
  * FUNCTION:    acpi_ds_build_internal_object
  *
@@ -67,9 +73,9 @@
  * DESCRIPTION: Translate a parser Op object to the equivalent namespace object
  *              Simple objects are any objects other than a package object!
  *
- ****************************************************************************/
+ ******************************************************************************/
 
-acpi_status
+static acpi_status
 acpi_ds_build_internal_object (
 	struct acpi_walk_state          *walk_state,
 	union acpi_parse_object         *op,
@@ -90,9 +96,11 @@ acpi_ds_build_internal_object (
 		 * Otherwise, go ahead and look it up now
 		 */
 		if (!op->common.node) {
-			status = acpi_ns_lookup (walk_state->scope_info, op->common.value.string,
+			status = acpi_ns_lookup (walk_state->scope_info,
+					  op->common.value.string,
 					  ACPI_TYPE_ANY, ACPI_IMODE_EXECUTE,
-					  ACPI_NS_SEARCH_PARENT | ACPI_NS_DONT_OPEN_SCOPE, NULL,
+					  ACPI_NS_SEARCH_PARENT | ACPI_NS_DONT_OPEN_SCOPE,
+					  NULL,
 					  (struct acpi_namespace_node **) &(op->common.node));
 
 			if (ACPI_FAILURE (status)) {
@@ -104,12 +112,14 @@ acpi_ds_build_internal_object (
 
 	/* Create and init the internal ACPI object */
 
-	obj_desc = acpi_ut_create_internal_object ((acpi_ps_get_opcode_info (op->common.aml_opcode))->object_type);
+	obj_desc = acpi_ut_create_internal_object (
+			 (acpi_ps_get_opcode_info (op->common.aml_opcode))->object_type);
 	if (!obj_desc) {
 		return_ACPI_STATUS (AE_NO_MEMORY);
 	}
 
-	status = acpi_ds_init_object_from_op (walk_state, op, op->common.aml_opcode, &obj_desc);
+	status = acpi_ds_init_object_from_op (walk_state, op, op->common.aml_opcode,
+			 &obj_desc);
 	if (ACPI_FAILURE (status)) {
 		acpi_ut_remove_reference (obj_desc);
 		return_ACPI_STATUS (status);
@@ -120,7 +130,7 @@ acpi_ds_build_internal_object (
 }
 
 
-/*****************************************************************************
+/*******************************************************************************
  *
  * FUNCTION:    acpi_ds_build_internal_buffer_obj
  *
@@ -134,7 +144,7 @@ acpi_ds_build_internal_object (
  * DESCRIPTION: Translate a parser Op package object to the equivalent
  *              namespace object
  *
- ****************************************************************************/
+ ******************************************************************************/
 
 acpi_status
 acpi_ds_build_internal_buffer_obj (
@@ -229,7 +239,7 @@ acpi_ds_build_internal_buffer_obj (
 }
 
 
-/*****************************************************************************
+/*******************************************************************************
  *
  * FUNCTION:    acpi_ds_build_internal_package_obj
  *
@@ -243,7 +253,7 @@ acpi_ds_build_internal_buffer_obj (
  * DESCRIPTION: Translate a parser Op package object to the equivalent
  *              namespace object
  *
- ****************************************************************************/
+ ******************************************************************************/
 
 acpi_status
 acpi_ds_build_internal_package_obj (
@@ -331,11 +341,12 @@ acpi_ds_build_internal_package_obj (
 		if (arg->common.aml_opcode == AML_INT_RETURN_VALUE_OP) {
 			/* Object (package or buffer) is already built */
 
-			obj_desc->package.elements[i] = ACPI_CAST_PTR (union acpi_operand_object, arg->common.node);
+			obj_desc->package.elements[i] =
+				ACPI_CAST_PTR (union acpi_operand_object, arg->common.node);
 		}
 		else {
 			status = acpi_ds_build_internal_object (walk_state, arg,
-					  &obj_desc->package.elements[i]);
+					 &obj_desc->package.elements[i]);
 		}
 
 		i++;
@@ -348,7 +359,7 @@ acpi_ds_build_internal_package_obj (
 }
 
 
-/*****************************************************************************
+/*******************************************************************************
  *
  * FUNCTION:    acpi_ds_create_node
  *
@@ -360,7 +371,7 @@ acpi_ds_build_internal_package_obj (
  *
  * DESCRIPTION: Create the object to be associated with a namespace node
  *
- ****************************************************************************/
+ ******************************************************************************/
 
 acpi_status
 acpi_ds_create_node (
@@ -392,7 +403,8 @@ acpi_ds_create_node (
 
 	/* Build an internal object for the argument(s) */
 
-	status = acpi_ds_build_internal_object (walk_state, op->common.value.arg, &obj_desc);
+	status = acpi_ds_build_internal_object (walk_state, op->common.value.arg,
+			 &obj_desc);
 	if (ACPI_FAILURE (status)) {
 		return_ACPI_STATUS (status);
 	}
@@ -414,7 +426,7 @@ acpi_ds_create_node (
 #endif /* ACPI_NO_METHOD_EXECUTION */
 
 
-/*****************************************************************************
+/*******************************************************************************
  *
  * FUNCTION:    acpi_ds_init_object_from_op
  *
@@ -429,7 +441,7 @@ acpi_ds_create_node (
  *              associated arguments.  The namespace object is a more compact
  *              representation of the Op and its arguments.
  *
- ****************************************************************************/
+ ******************************************************************************/
 
 acpi_status
 acpi_ds_init_object_from_op (
@@ -462,7 +474,8 @@ acpi_ds_init_object_from_op (
 		/*
 		 * Defer evaluation of Buffer term_arg operand
 		 */
-		obj_desc->buffer.node     = (struct acpi_namespace_node *) walk_state->operands[0];
+		obj_desc->buffer.node     = (struct acpi_namespace_node *)
+				   walk_state->operands[0];
 		obj_desc->buffer.aml_start = op->named.data;
 		obj_desc->buffer.aml_length = op->named.length;
 		break;
@@ -473,7 +486,8 @@ acpi_ds_init_object_from_op (
 		/*
 		 * Defer evaluation of Package term_arg operand
 		 */
-		obj_desc->package.node     = (struct acpi_namespace_node *) walk_state->operands[0];
+		obj_desc->package.node     = (struct acpi_namespace_node *)
+				   walk_state->operands[0];
 		obj_desc->package.aml_start = op->named.data;
 		obj_desc->package.aml_length = op->named.length;
 		break;
@@ -486,9 +500,10 @@ acpi_ds_init_object_from_op (
 			/*
 			 * Resolve AML Constants here - AND ONLY HERE!
 			 * All constants are integers.
-			 * We mark the integer with a flag that indicates that it started life
-			 * as a constant -- so that stores to constants will perform as expected (noop).
-			 * (zero_op is used as a placeholder for optional target operands.)
+			 * We mark the integer with a flag that indicates that it started
+			 * life as a constant -- so that stores to constants will perform
+			 * as expected (noop). zero_op is used as a placeholder for optional
+			 * target operands.
 			 */
 			obj_desc->common.flags = AOPOBJ_AML_CONSTANT;
 
@@ -521,7 +536,8 @@ acpi_ds_init_object_from_op (
 
 			default:
 
-				ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Unknown constant opcode %X\n", opcode));
+				ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+					"Unknown constant opcode %X\n", opcode));
 				status = AE_AML_OPERAND_TYPE;
 				break;
 			}
@@ -535,7 +551,8 @@ acpi_ds_init_object_from_op (
 
 
 		default:
-			ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Unknown Integer type %X\n", op_info->type));
+			ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Unknown Integer type %X\n",
+				op_info->type));
 			status = AE_AML_OPERAND_TYPE;
 			break;
 		}
@@ -570,8 +587,10 @@ acpi_ds_init_object_from_op (
 			obj_desc->reference.offset = opcode - AML_LOCAL_OP;
 
 #ifndef ACPI_NO_METHOD_EXECUTION
-			status = acpi_ds_method_data_get_node (AML_LOCAL_OP, obj_desc->reference.offset,
-					 walk_state, (struct acpi_namespace_node **) &obj_desc->reference.object);
+			status = acpi_ds_method_data_get_node (AML_LOCAL_OP,
+					 obj_desc->reference.offset,
+					 walk_state,
+					 (struct acpi_namespace_node **) &obj_desc->reference.object);
 #endif
 			break;
 
@@ -584,8 +603,10 @@ acpi_ds_init_object_from_op (
 			obj_desc->reference.offset = opcode - AML_ARG_OP;
 
 #ifndef ACPI_NO_METHOD_EXECUTION
-			status = acpi_ds_method_data_get_node (AML_ARG_OP, obj_desc->reference.offset,
-					 walk_state, (struct acpi_namespace_node **) &obj_desc->reference.object);
+			status = acpi_ds_method_data_get_node (AML_ARG_OP,
+					 obj_desc->reference.offset,
+					 walk_state,
+					 (struct acpi_namespace_node **) &obj_desc->reference.object);
 #endif
 			break;
 
diff --git a/drivers/acpi/dispatcher/dsopcode.c b/drivers/acpi/dispatcher/dsopcode.c
index 5c987a0e7b75..ba13bca28bee 100644
--- a/drivers/acpi/dispatcher/dsopcode.c
+++ b/drivers/acpi/dispatcher/dsopcode.c
@@ -54,12 +54,31 @@
 #define _COMPONENT          ACPI_DISPATCHER
 	 ACPI_MODULE_NAME    ("dsopcode")
 
+/* Local prototypes */
 
-/*****************************************************************************
+static acpi_status
+acpi_ds_execute_arguments (
+	struct acpi_namespace_node      *node,
+	struct acpi_namespace_node      *scope_node,
+	u32                             aml_length,
+	u8                              *aml_start);
+
+static acpi_status
+acpi_ds_init_buffer_field (
+	u16                             aml_opcode,
+	union acpi_operand_object       *obj_desc,
+	union acpi_operand_object       *buffer_desc,
+	union acpi_operand_object       *offset_desc,
+	union acpi_operand_object       *length_desc,
+	union acpi_operand_object       *result_desc);
+
+
+/*******************************************************************************
  *
  * FUNCTION:    acpi_ds_execute_arguments
  *
- * PARAMETERS:  Node                - Parent NS node
+ * PARAMETERS:  Node                - Object NS node
+ *              scope_node          - Parent NS node
  *              aml_length          - Length of executable AML
  *              aml_start           - Pointer to the AML
  *
@@ -67,9 +86,9 @@
  *
  * DESCRIPTION: Late (deferred) execution of region or field arguments
  *
- ****************************************************************************/
+ ******************************************************************************/
 
-acpi_status
+static acpi_status
 acpi_ds_execute_arguments (
 	struct acpi_namespace_node      *node,
 	struct acpi_namespace_node      *scope_node,
@@ -162,7 +181,7 @@ acpi_ds_execute_arguments (
 }
 
 
-/*****************************************************************************
+/*******************************************************************************
  *
  * FUNCTION:    acpi_ds_get_buffer_field_arguments
  *
@@ -173,7 +192,7 @@ acpi_ds_execute_arguments (
  * DESCRIPTION: Get buffer_field Buffer and Index. This implements the late
  *              evaluation of these field attributes.
  *
- ****************************************************************************/
+ ******************************************************************************/
 
 acpi_status
 acpi_ds_get_buffer_field_arguments (
@@ -208,7 +227,7 @@ acpi_ds_get_buffer_field_arguments (
 }
 
 
-/*****************************************************************************
+/*******************************************************************************
  *
  * FUNCTION:    acpi_ds_get_buffer_arguments
  *
@@ -219,7 +238,7 @@ acpi_ds_get_buffer_field_arguments (
  * DESCRIPTION: Get Buffer length and initializer byte list.  This implements
  *              the late evaluation of these attributes.
  *
- ****************************************************************************/
+ ******************************************************************************/
 
 acpi_status
 acpi_ds_get_buffer_arguments (
@@ -255,7 +274,7 @@ acpi_ds_get_buffer_arguments (
 }
 
 
-/*****************************************************************************
+/*******************************************************************************
  *
  * FUNCTION:    acpi_ds_get_package_arguments
  *
@@ -266,7 +285,7 @@ acpi_ds_get_buffer_arguments (
  * DESCRIPTION: Get Package length and initializer byte list.  This implements
  *              the late evaluation of these attributes.
  *
- ****************************************************************************/
+ ******************************************************************************/
 
 acpi_status
 acpi_ds_get_package_arguments (
@@ -353,17 +372,17 @@ acpi_ds_get_region_arguments (
 }
 
 
-/*****************************************************************************
+/*******************************************************************************
  *
  * FUNCTION:    acpi_ds_initialize_region
  *
- * PARAMETERS:  Op              - A valid region Op object
+ * PARAMETERS:  obj_handle      - Region namespace node
  *
  * RETURN:      Status
  *
  * DESCRIPTION: Front end to ev_initialize_region
  *
- ****************************************************************************/
+ ******************************************************************************/
 
 acpi_status
 acpi_ds_initialize_region (
@@ -382,7 +401,7 @@ acpi_ds_initialize_region (
 }
 
 
-/*****************************************************************************
+/*******************************************************************************
  *
  * FUNCTION:    acpi_ds_init_buffer_field
  *
@@ -390,16 +409,16 @@ acpi_ds_initialize_region (
  *              obj_desc        - buffer_field object
  *              buffer_desc     - Host Buffer
  *              offset_desc     - Offset into buffer
- *              Length          - Length of field (CREATE_FIELD_OP only)
- *              Result          - Where to store the result
+ *              length_desc     - Length of field (CREATE_FIELD_OP only)
+ *              result_desc     - Where to store the result
  *
  * RETURN:      Status
  *
  * DESCRIPTION: Perform actual initialization of a buffer field
  *
- ****************************************************************************/
+ ******************************************************************************/
 
-acpi_status
+static acpi_status
 acpi_ds_init_buffer_field (
 	u16                             aml_opcode,
 	union acpi_operand_object       *obj_desc,
@@ -435,8 +454,10 @@ acpi_ds_init_buffer_field (
 	 * after resolution in acpi_ex_resolve_operands().
 	 */
 	if (ACPI_GET_DESCRIPTOR_TYPE (result_desc) != ACPI_DESC_TYPE_NAMED) {
-		ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "(%s) destination not a NS Node [%s]\n",
-				acpi_ps_get_opcode_name (aml_opcode), acpi_ut_get_descriptor_name (result_desc)));
+		ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+				"(%s) destination not a NS Node [%s]\n",
+				acpi_ps_get_opcode_name (aml_opcode),
+				acpi_ut_get_descriptor_name (result_desc)));
 
 		status = AE_AML_OPERAND_TYPE;
 		goto cleanup;
@@ -452,9 +473,18 @@ acpi_ds_init_buffer_field (
 
 		/* Offset is in bits, count is in bits */
 
+		field_flags = AML_FIELD_ACCESS_BYTE;
 		bit_offset = offset;
 		bit_count  = (u32) length_desc->integer.value;
-		field_flags = AML_FIELD_ACCESS_BYTE;
+
+		/* Must have a valid (>0) bit count */
+
+		if (bit_count == 0) {
+			ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+				"Attempt to create_field of length 0\n"));
+			status = AE_AML_OPERAND_VALUE;
+			goto cleanup;
+		}
 		break;
 
 	case AML_CREATE_BIT_FIELD_OP:
@@ -527,7 +557,8 @@ acpi_ds_init_buffer_field (
 
 	/*
 	 * Initialize areas of the field object that are common to all fields
-	 * For field_flags, use LOCK_RULE = 0 (NO_LOCK), UPDATE_RULE = 0 (UPDATE_PRESERVE)
+	 * For field_flags, use LOCK_RULE = 0 (NO_LOCK),
+	 * UPDATE_RULE = 0 (UPDATE_PRESERVE)
 	 */
 	status = acpi_ex_prep_common_field_object (obj_desc, field_flags, 0,
 			  bit_offset, bit_count);
@@ -539,8 +570,8 @@ acpi_ds_init_buffer_field (
 
 	/* Reference count for buffer_desc inherits obj_desc count */
 
-	buffer_desc->common.reference_count = (u16) (buffer_desc->common.reference_count +
-			  obj_desc->common.reference_count);
+	buffer_desc->common.reference_count = (u16)
+		(buffer_desc->common.reference_count + obj_desc->common.reference_count);
 
 
 cleanup:
@@ -569,7 +600,7 @@ cleanup:
 }
 
 
-/*****************************************************************************
+/*******************************************************************************
  *
  * FUNCTION:    acpi_ds_eval_buffer_field_operands
  *
@@ -581,7 +612,7 @@ cleanup:
  * DESCRIPTION: Get buffer_field Buffer and Index
  *              Called from acpi_ds_exec_end_op during buffer_field parse tree walk
  *
- ****************************************************************************/
+ ******************************************************************************/
 
 acpi_status
 acpi_ds_eval_buffer_field_operands (
@@ -656,7 +687,7 @@ acpi_ds_eval_buffer_field_operands (
 }
 
 
-/*****************************************************************************
+/*******************************************************************************
  *
  * FUNCTION:    acpi_ds_eval_region_operands
  *
@@ -668,7 +699,7 @@ acpi_ds_eval_buffer_field_operands (
  * DESCRIPTION: Get region address and length
  *              Called from acpi_ds_exec_end_op during op_region parse tree walk
  *
- ****************************************************************************/
+ ******************************************************************************/
 
 acpi_status
 acpi_ds_eval_region_operands (
@@ -686,7 +717,8 @@ acpi_ds_eval_region_operands (
 
 
 	/*
-	 * This is where we evaluate the address and length fields of the op_region declaration
+	 * This is where we evaluate the address and length fields of the
+	 * op_region declaration
 	 */
 	node =  op->common.node;
 
@@ -707,7 +739,8 @@ acpi_ds_eval_region_operands (
 
 	/* Resolve the length and address operands to numbers */
 
-	status = acpi_ex_resolve_operands (op->common.aml_opcode, ACPI_WALK_OPERANDS, walk_state);
+	status = acpi_ex_resolve_operands (op->common.aml_opcode,
+			 ACPI_WALK_OPERANDS, walk_state);
 	if (ACPI_FAILURE (status)) {
 		return_ACPI_STATUS (status);
 	}
@@ -736,7 +769,8 @@ acpi_ds_eval_region_operands (
 	 */
 	operand_desc = walk_state->operands[walk_state->num_operands - 2];
 
-	obj_desc->region.address = (acpi_physical_address) operand_desc->integer.value;
+	obj_desc->region.address = (acpi_physical_address)
+			  operand_desc->integer.value;
 	acpi_ut_remove_reference (operand_desc);
 
 	ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "rgn_obj %p Addr %8.8X%8.8X Len %X\n",
@@ -752,7 +786,7 @@ acpi_ds_eval_region_operands (
 }
 
 
-/*****************************************************************************
+/*******************************************************************************
  *
  * FUNCTION:    acpi_ds_eval_data_object_operands
  *
@@ -765,7 +799,7 @@ acpi_ds_eval_region_operands (
  * DESCRIPTION: Get the operands and complete the following data object types:
  *              Buffer, Package.
  *
- ****************************************************************************/
+ ******************************************************************************/
 
 acpi_status
 acpi_ds_eval_data_object_operands (
@@ -830,7 +864,7 @@ acpi_ds_eval_data_object_operands (
 
 	if (ACPI_SUCCESS (status)) {
 		/*
-		 * Return the object in the walk_state, unless the parent is a package --
+		 * Return the object in the walk_state, unless the parent is a package -
 		 * in this case, the return object will be stored in the parse tree
 		 * for the package.
 		 */
@@ -988,7 +1022,8 @@ acpi_ds_exec_end_control_op (
 			status = AE_CTRL_PENDING;
 		}
 
-		ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "[WHILE_OP] termination! Op=%p\n", op));
+		ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
+			"[WHILE_OP] termination! Op=%p\n",op));
 
 		/* Pop this control state and free it */
 
diff --git a/drivers/acpi/dispatcher/dsutils.c b/drivers/acpi/dispatcher/dsutils.c
index 462c5d83e747..9613349ac31d 100644
--- a/drivers/acpi/dispatcher/dsutils.c
+++ b/drivers/acpi/dispatcher/dsutils.c
@@ -100,7 +100,6 @@ acpi_ds_clear_implicit_return (
 
 
 #ifndef ACPI_NO_METHOD_EXECUTION
-
 /*******************************************************************************
  *
  * FUNCTION:    acpi_ds_do_implicit_return
@@ -205,7 +204,7 @@ acpi_ds_is_result_used (
 	 * NOTE: this is optional because the ASL language does not actually
 	 * support this behavior.
 	 */
-	acpi_ds_do_implicit_return (walk_state->result_obj, walk_state, TRUE);
+	(void) acpi_ds_do_implicit_return (walk_state->result_obj, walk_state, TRUE);
 
 	/*
 	 * Now determine if the parent will use the result
@@ -219,8 +218,9 @@ acpi_ds_is_result_used (
 		(op->common.parent->common.aml_opcode == AML_SCOPE_OP)) {
 		/* No parent, the return value cannot possibly be used */
 
-		ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "At Method level, result of [%s] not used\n",
-				acpi_ps_get_opcode_name (op->common.aml_opcode)));
+		ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
+			"At Method level, result of [%s] not used\n",
+			acpi_ps_get_opcode_name (op->common.aml_opcode)));
 		return_VALUE (FALSE);
 	}
 
@@ -228,7 +228,8 @@ acpi_ds_is_result_used (
 
 	parent_info = acpi_ps_get_opcode_info (op->common.parent->common.aml_opcode);
 	if (parent_info->class == AML_CLASS_UNKNOWN) {
-		ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Unknown parent opcode. Op=%p\n", op));
+		ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+			"Unknown parent opcode. Op=%p\n", op));
 		return_VALUE (FALSE);
 	}
 
@@ -309,17 +310,19 @@ acpi_ds_is_result_used (
 
 
 result_used:
-	ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Result of [%s] used by Parent [%s] Op=%p\n",
-			acpi_ps_get_opcode_name (op->common.aml_opcode),
-			acpi_ps_get_opcode_name (op->common.parent->common.aml_opcode), op));
+	ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
+		"Result of [%s] used by Parent [%s] Op=%p\n",
+		acpi_ps_get_opcode_name (op->common.aml_opcode),
+		acpi_ps_get_opcode_name (op->common.parent->common.aml_opcode), op));
 
 	return_VALUE (TRUE);
 
 
 result_not_used:
-	ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Result of [%s] not used by Parent [%s] Op=%p\n",
-			acpi_ps_get_opcode_name (op->common.aml_opcode),
-			acpi_ps_get_opcode_name (op->common.parent->common.aml_opcode), op));
+	ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
+		"Result of [%s] not used by Parent [%s] Op=%p\n",
+		acpi_ps_get_opcode_name (op->common.aml_opcode),
+		acpi_ps_get_opcode_name (op->common.parent->common.aml_opcode), op));
 
 	return_VALUE (FALSE);
 }
@@ -522,7 +525,8 @@ acpi_ds_create_operand (
 		if ((walk_state->deferred_node) &&
 			(walk_state->deferred_node->type == ACPI_TYPE_BUFFER_FIELD) &&
 			(arg_index != 0)) {
-			obj_desc = ACPI_CAST_PTR (union acpi_operand_object, walk_state->deferred_node);
+			obj_desc = ACPI_CAST_PTR (
+					 union acpi_operand_object, walk_state->deferred_node);
 			status = AE_OK;
 		}
 		else    /* All other opcodes */ {
@@ -565,7 +569,8 @@ acpi_ds_create_operand (
 					 * indicate this to the interpreter, set the
 					 * object to the root
 					 */
-					obj_desc = ACPI_CAST_PTR (union acpi_operand_object, acpi_gbl_root_node);
+					obj_desc = ACPI_CAST_PTR (
+							 union acpi_operand_object, acpi_gbl_root_node);
 					status = AE_OK;
 				}
 				else {
@@ -612,7 +617,8 @@ acpi_ds_create_operand (
 			 */
 			opcode = AML_ZERO_OP;       /* Has no arguments! */
 
-			ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Null namepath: Arg=%p\n", arg));
+			ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
+				"Null namepath: Arg=%p\n", arg));
 		}
 		else {
 			opcode = arg->common.aml_opcode;
@@ -642,7 +648,8 @@ acpi_ds_create_operand (
 				 * Only error is underflow, and this indicates
 				 * a missing or null operand!
 				 */
-				ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Missing or null operand, %s\n",
+				ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+					"Missing or null operand, %s\n",
 					acpi_format_exception (status)));
 				return_ACPI_STATUS (status);
 			}
@@ -657,8 +664,8 @@ acpi_ds_create_operand (
 
 			/* Initialize the new object */
 
-			status = acpi_ds_init_object_from_op (walk_state, arg,
-					 opcode, &obj_desc);
+			status = acpi_ds_init_object_from_op (
+					 walk_state, arg, opcode, &obj_desc);
 			if (ACPI_FAILURE (status)) {
 				acpi_ut_delete_object_desc (obj_desc);
 				return_ACPI_STATUS (status);
diff --git a/drivers/acpi/dispatcher/dswexec.c b/drivers/acpi/dispatcher/dswexec.c
index 2071a0d2bbbb..10f71318e23b 100644
--- a/drivers/acpi/dispatcher/dswexec.c
+++ b/drivers/acpi/dispatcher/dswexec.c
@@ -73,11 +73,13 @@ static ACPI_EXECUTE_OP      acpi_gbl_op_type_dispatch [] = {
 			  acpi_ex_opcode_3A_1T_1R,
 			  acpi_ex_opcode_6A_0T_1R};
 
+
 /*****************************************************************************
  *
  * FUNCTION:    acpi_ds_get_predicate_value
  *
  * PARAMETERS:  walk_state      - Current state of the parse tree walk
+ *              result_obj      - if non-zero, pop result from result stack
  *
  * RETURN:      Status
  *
@@ -124,7 +126,8 @@ acpi_ds_get_predicate_value (
 	}
 
 	if (!obj_desc) {
-		ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "No predicate obj_desc=%p State=%p\n",
+		ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+			"No predicate obj_desc=%p State=%p\n",
 			obj_desc, walk_state));
 
 		return_ACPI_STATUS (AE_AML_NO_OPERAND);
@@ -197,7 +200,7 @@ cleanup:
  * FUNCTION:    acpi_ds_exec_begin_op
  *
  * PARAMETERS:  walk_state      - Current state of the parse tree walk
- *              out_op          - Return op if a new one is created
+ *              out_op          - Where to return op if a new one is created
  *
  * RETURN:      Status
  *
@@ -233,7 +236,8 @@ acpi_ds_exec_begin_op (
 		walk_state->op_info = acpi_ps_get_opcode_info (op->common.aml_opcode);
 
 		if (acpi_ns_opens_scope (walk_state->op_info->object_type)) {
-			ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "(%s) Popping scope for Op %p\n",
+			ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
+				"(%s) Popping scope for Op %p\n",
 				acpi_ut_get_type_name (walk_state->op_info->object_type), op));
 
 			status = acpi_ds_scope_stack_pop (walk_state);
@@ -297,11 +301,10 @@ acpi_ds_exec_begin_op (
 
 		if (walk_state->walk_type == ACPI_WALK_METHOD) {
 			/*
-			 * Found a named object declaration during method
-			 * execution;  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.
+			 * Found a named object declaration during method execution;
+			 * 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.
 			 */
 			status = acpi_ds_load2_begin_op (walk_state, NULL);
 		}
@@ -338,8 +341,6 @@ acpi_ds_exec_begin_op (
  * FUNCTION:    acpi_ds_exec_end_op
  *
  * PARAMETERS:  walk_state      - Current state of the parse tree walk
- *              Op              - Op that has been just been completed in the
- *                                walk;  Arguments have now been evaluated.
  *
  * RETURN:      Status
  *
@@ -389,7 +390,7 @@ acpi_ds_exec_end_op (
 	/* Decode the Opcode Class */
 
 	switch (op_class) {
-	case AML_CLASS_ARGUMENT:    /* constants, literals, etc. -- do nothing */
+	case AML_CLASS_ARGUMENT:    /* constants, literals, etc. - do nothing */
 		break;
 
 
@@ -417,12 +418,12 @@ acpi_ds_exec_end_op (
 			/* Resolve all operands */
 
 			status = acpi_ex_resolve_operands (walk_state->opcode,
-					  &(walk_state->operands [walk_state->num_operands -1]),
-					  walk_state);
+					 &(walk_state->operands [walk_state->num_operands -1]),
+					 walk_state);
 			if (ACPI_SUCCESS (status)) {
 				ACPI_DUMP_OPERANDS (ACPI_WALK_OPERANDS, ACPI_IMODE_EXECUTE,
-						  acpi_ps_get_opcode_name (walk_state->opcode),
-						  walk_state->num_operands, "after ex_resolve_operands");
+					acpi_ps_get_opcode_name (walk_state->opcode),
+					walk_state->num_operands, "after ex_resolve_operands");
 			}
 		}
 
@@ -506,7 +507,8 @@ acpi_ds_exec_end_op (
 			if ((op->asl.parent) &&
 			   ((op->asl.parent->asl.aml_opcode == AML_PACKAGE_OP) ||
 				(op->asl.parent->asl.aml_opcode == AML_VAR_PACKAGE_OP))) {
-				ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Method Reference in a Package, Op=%p\n", op));
+				ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
+					"Method Reference in a Package, Op=%p\n", op));
 				op->common.node = (struct acpi_namespace_node *) op->asl.value.arg->asl.node->object;
 				acpi_ut_add_reference (op->asl.value.arg->asl.node->object);
 				return_ACPI_STATUS (AE_OK);
@@ -583,13 +585,15 @@ acpi_ds_exec_end_op (
 			case AML_NAME_OP:
 
 				/*
-				 * Put the Node on the object stack (Contains the ACPI Name of
-				 * this object)
+				 * Put the Node on the object stack (Contains the ACPI Name
+				 * of this object)
 				 */
 				walk_state->operands[0] = (void *) op->common.parent->common.node;
 				walk_state->num_operands = 1;
 
-				status = acpi_ds_create_node (walk_state, op->common.parent->common.node, op->common.parent);
+				status = acpi_ds_create_node (walk_state,
+						 op->common.parent->common.node,
+						 op->common.parent);
 				if (ACPI_FAILURE (status)) {
 					break;
 				}
@@ -600,7 +604,7 @@ acpi_ds_exec_end_op (
 			case AML_INT_EVAL_SUBTREE_OP:
 
 				status = acpi_ds_eval_data_object_operands (walk_state, op,
-						  acpi_ns_get_attached_object (op->common.parent->common.node));
+						 acpi_ns_get_attached_object (op->common.parent->common.node));
 				break;
 
 			default:
@@ -609,7 +613,7 @@ acpi_ds_exec_end_op (
 				break;
 			}
 
-			/* Done with this result state (Now that operand stack is built) */
+			/* Done with result state (Now that operand stack is built) */
 
 			status = acpi_ds_result_stack_pop (walk_state);
 			if (ACPI_FAILURE (status)) {
@@ -620,8 +624,7 @@ acpi_ds_exec_end_op (
 			 * If a result object was returned from above, push it on the
 			 * current result stack
 			 */
-			if (ACPI_SUCCESS (status) &&
-				walk_state->result_obj) {
+			if (walk_state->result_obj) {
 				status = acpi_ds_result_push (walk_state->result_obj, walk_state);
 			}
 			break;
@@ -654,7 +657,8 @@ acpi_ds_exec_end_op (
 
 		case AML_TYPE_UNDEFINED:
 
-			ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Undefined opcode type Op=%p\n", op));
+			ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+				"Undefined opcode type Op=%p\n", op));
 			return_ACPI_STATUS (AE_NOT_IMPLEMENTED);
 
 
@@ -709,13 +713,14 @@ cleanup:
 		status = acpi_gbl_exception_handler (status,
 				 walk_state->method_node->name.integer, walk_state->opcode,
 				 walk_state->aml_offset, NULL);
-		acpi_ex_enter_interpreter ();
+		(void) acpi_ex_enter_interpreter ();
 	}
 
 	if (walk_state->result_obj) {
 		/* Break to debugger to display result */
 
-		ACPI_DEBUGGER_EXEC (acpi_db_display_result_object (walk_state->result_obj, walk_state));
+		ACPI_DEBUGGER_EXEC (acpi_db_display_result_object (walk_state->result_obj,
+				 walk_state));
 
 		/*
 		 * Delete the result op if and only if:
diff --git a/drivers/acpi/dispatcher/dswload.c b/drivers/acpi/dispatcher/dswload.c
index 06d758679588..1ac197ccfc80 100644
--- a/drivers/acpi/dispatcher/dswload.c
+++ b/drivers/acpi/dispatcher/dswload.c
@@ -79,20 +79,23 @@ acpi_ds_init_callbacks (
 
 	switch (pass_number) {
 	case 1:
-		walk_state->parse_flags       = ACPI_PARSE_LOAD_PASS1 | ACPI_PARSE_DELETE_TREE;
+		walk_state->parse_flags       = ACPI_PARSE_LOAD_PASS1 |
+				   ACPI_PARSE_DELETE_TREE;
 		walk_state->descending_callback = acpi_ds_load1_begin_op;
 		walk_state->ascending_callback = acpi_ds_load1_end_op;
 		break;
 
 	case 2:
-		walk_state->parse_flags       = ACPI_PARSE_LOAD_PASS1 | ACPI_PARSE_DELETE_TREE;
+		walk_state->parse_flags       = ACPI_PARSE_LOAD_PASS1 |
+				   ACPI_PARSE_DELETE_TREE;
 		walk_state->descending_callback = acpi_ds_load2_begin_op;
 		walk_state->ascending_callback = acpi_ds_load2_end_op;
 		break;
 
 	case 3:
 #ifndef ACPI_NO_METHOD_EXECUTION
-		walk_state->parse_flags      |= ACPI_PARSE_EXECUTE  | ACPI_PARSE_DELETE_TREE;
+		walk_state->parse_flags      |= ACPI_PARSE_EXECUTE  |
+				   ACPI_PARSE_DELETE_TREE;
 		walk_state->descending_callback = acpi_ds_exec_begin_op;
 		walk_state->ascending_callback = acpi_ds_exec_end_op;
 #endif
@@ -111,8 +114,7 @@ acpi_ds_init_callbacks (
  * FUNCTION:    acpi_ds_load1_begin_op
  *
  * PARAMETERS:  walk_state      - Current state of the parse tree walk
- *              Op              - Op that has been just been reached in the
- *                                walk;  Arguments have not been evaluated yet.
+ *              out_op          - Where to return op if a new one is created
  *
  * RETURN:      Status
  *
@@ -146,7 +148,8 @@ acpi_ds_load1_begin_op (
 #if 0
 			if ((walk_state->op_info->class == AML_CLASS_EXECUTE) ||
 				(walk_state->op_info->class == AML_CLASS_CONTROL)) {
-				acpi_os_printf ("\n\n***EXECUTABLE OPCODE %s***\n\n", walk_state->op_info->name);
+				acpi_os_printf ("\n\n***EXECUTABLE OPCODE %s***\n\n",
+					walk_state->op_info->name);
 				*out_op = op;
 				return (AE_CTRL_SKIP);
 			}
@@ -191,7 +194,8 @@ acpi_ds_load1_begin_op (
 			 */
 			acpi_dm_add_to_external_list (path);
 			status = acpi_ns_lookup (walk_state->scope_info, path, object_type,
-					   ACPI_IMODE_LOAD_PASS1, ACPI_NS_SEARCH_PARENT, walk_state, &(node));
+					   ACPI_IMODE_LOAD_PASS1, ACPI_NS_SEARCH_PARENT,
+					   walk_state, &(node));
 		}
 #endif
 		if (ACPI_FAILURE (status)) {
@@ -224,10 +228,12 @@ acpi_ds_load1_begin_op (
 			 *  Name (DEB, 0)
 			 *  Scope (DEB) { ... }
 			 *
-			 * Note: silently change the type here.  On the second pass, we will report a warning
+			 * Note: silently change the type here.  On the second pass, we will report
+			 * a warning
 			 */
 
-			ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Type override - [%4.4s] had invalid type (%s) for Scope operator, changed to (Scope)\n",
+			ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
+				"Type override - [%4.4s] had invalid type (%s) for Scope operator, changed to (Scope)\n",
 				path, acpi_ut_get_type_name (node->type)));
 
 			node->type = ACPI_TYPE_ANY;
@@ -238,7 +244,8 @@ acpi_ds_load1_begin_op (
 
 			/* All other types are an error */
 
-			ACPI_REPORT_ERROR (("Invalid type (%s) for target of Scope operator [%4.4s] (Cannot override)\n",
+			ACPI_REPORT_ERROR ((
+				"Invalid type (%s) for target of Scope operator [%4.4s] (Cannot override)\n",
 				acpi_ut_get_type_name (node->type), path));
 
 			return (AE_AML_OPERAND_TYPE);
@@ -249,7 +256,8 @@ acpi_ds_load1_begin_op (
 	default:
 
 		/*
-		 * For all other named opcodes, we will enter the name into the namespace.
+		 * For all other named opcodes, we will enter the name into
+		 * the namespace.
 		 *
 		 * Setup the search flags.
 		 * Since we are entering a name into the namespace, we do not want to
@@ -279,14 +287,16 @@ acpi_ds_load1_begin_op (
 					acpi_ut_get_type_name (object_type)));
 		}
 		else {
-			ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "[%s] Both Find or Create allowed\n",
+			ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
+				"[%s] Both Find or Create allowed\n",
 					acpi_ut_get_type_name (object_type)));
 		}
 
 		/*
 		 * Enter the named type into the internal namespace.  We enter the name
-		 * as we go downward in the parse tree.  Any necessary subobjects that involve
-		 * arguments to the opcode must be created as we go back up the parse tree later.
+		 * as we go downward in the parse tree.  Any necessary subobjects that
+		 * involve arguments to the opcode must be created as we go back up the
+		 * parse tree later.
 		 */
 		status = acpi_ns_lookup (walk_state->scope_info, path, object_type,
 				  ACPI_IMODE_LOAD_PASS1, flags, walk_state, &(node));
@@ -335,8 +345,6 @@ acpi_ds_load1_begin_op (
  * FUNCTION:    acpi_ds_load1_end_op
  *
  * PARAMETERS:  walk_state      - Current state of the parse tree walk
- *              Op              - Op that has been just been completed in the
- *                                walk;  Arguments have now been evaluated.
  *
  * RETURN:      Status
  *
@@ -383,7 +391,9 @@ acpi_ds_load1_end_op (
 
 	if (op->common.aml_opcode == AML_REGION_OP) {
 		status = acpi_ex_create_region (op->named.data, op->named.length,
-				   (acpi_adr_space_type) ((op->common.value.arg)->common.value.integer), walk_state);
+				   (acpi_adr_space_type)
+						 ((op->common.value.arg)->common.value.integer),
+						 walk_state);
 		if (ACPI_FAILURE (status)) {
 			return (status);
 		}
@@ -394,7 +404,8 @@ acpi_ds_load1_end_op (
 		/* For Name opcode, get the object type from the argument */
 
 		if (op->common.value.arg) {
-			object_type = (acpi_ps_get_opcode_info ((op->common.value.arg)->common.aml_opcode))->object_type;
+			object_type = (acpi_ps_get_opcode_info (
+				(op->common.value.arg)->common.aml_opcode))->object_type;
 			op->common.node->type = (u8) object_type;
 		}
 	}
@@ -448,8 +459,7 @@ acpi_ds_load1_end_op (
  * FUNCTION:    acpi_ds_load2_begin_op
  *
  * PARAMETERS:  walk_state      - Current state of the parse tree walk
- *              Op              - Op that has been just been reached in the
- *                                walk;  Arguments have not been evaluated yet.
+ *              out_op          - Wher to return op if a new one is created
  *
  * RETURN:      Status
  *
@@ -478,14 +488,20 @@ acpi_ds_load2_begin_op (
 	if (op) {
 		/* We only care about Namespace opcodes here */
 
-		if ((!(walk_state->op_info->flags & AML_NSOPCODE) && (walk_state->opcode != AML_INT_NAMEPATH_OP)) ||
+		if ((!(walk_state->op_info->flags & AML_NSOPCODE) &&
+			  (walk_state->opcode != AML_INT_NAMEPATH_OP)) ||
 			(!(walk_state->op_info->flags & AML_NAMED))) {
+			if ((walk_state->op_info->class == AML_CLASS_EXECUTE) ||
+				(walk_state->op_info->class == AML_CLASS_CONTROL)) {
+				ACPI_REPORT_WARNING ((
+					"Encountered executable code at module level, [%s]\n",
+					acpi_ps_get_opcode_name (walk_state->opcode)));
+			}
 			return_ACPI_STATUS (AE_OK);
 		}
 
-		/*
-		 * Get the name we are going to enter or lookup in the namespace
-		 */
+		/* Get the name we are going to enter or lookup in the namespace */
+
 		if (walk_state->opcode == AML_INT_NAMEPATH_OP) {
 			/* For Namepath op, get the path string */
 
@@ -528,21 +544,25 @@ acpi_ds_load2_begin_op (
 	case AML_INT_NAMEPATH_OP:
 
 		/*
-		 * The name_path is an object reference to an existing object. Don't enter the
-		 * name into the namespace, but look it up for use later
+		 * The name_path is an object reference to an existing object.
+		 * Don't enter the name into the namespace, but look it up
+		 * for use later.
 		 */
 		status = acpi_ns_lookup (walk_state->scope_info, buffer_ptr, object_type,
-				  ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT, walk_state, &(node));
+				  ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT,
+				  walk_state, &(node));
 		break;
 
 	case AML_SCOPE_OP:
 
 		/*
-		 * The Path is an object reference to an existing object.  Don't enter the
-		 * name into the namespace, but look it up for use later
+		 * The Path is an object reference to an existing object.
+		 * Don't enter the name into the namespace, but look it up
+		 * for use later.
 		 */
 		status = acpi_ns_lookup (walk_state->scope_info, buffer_ptr, object_type,
-				  ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT, walk_state, &(node));
+				  ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT,
+				  walk_state, &(node));
 		if (ACPI_FAILURE (status)) {
 #ifdef _ACPI_ASL_COMPILER
 			if (status == AE_NOT_FOUND) {
@@ -582,7 +602,8 @@ acpi_ds_load2_begin_op (
 			 *  Scope (DEB) { ... }
 			 */
 
-			ACPI_REPORT_WARNING (("Type override - [%4.4s] had invalid type (%s) for Scope operator, changed to (Scope)\n",
+			ACPI_REPORT_WARNING ((
+				"Type override - [%4.4s] had invalid type (%s) for Scope operator, changed to (Scope)\n",
 				buffer_ptr, acpi_ut_get_type_name (node->type)));
 
 			node->type = ACPI_TYPE_ANY;
@@ -593,7 +614,8 @@ acpi_ds_load2_begin_op (
 
 			/* All other types are an error */
 
-			ACPI_REPORT_ERROR (("Invalid type (%s) for target of Scope operator [%4.4s]\n",
+			ACPI_REPORT_ERROR ((
+				"Invalid type (%s) for target of Scope operator [%4.4s]\n",
 				acpi_ut_get_type_name (node->type), buffer_ptr));
 
 			return (AE_AML_OPERAND_TYPE);
@@ -621,8 +643,9 @@ acpi_ds_load2_begin_op (
 
 		/*
 		 * Enter the named type into the internal namespace.  We enter the name
-		 * as we go downward in the parse tree.  Any necessary subobjects that involve
-		 * arguments to the opcode must be created as we go back up the parse tree later.
+		 * as we go downward in the parse tree.  Any necessary subobjects that
+		 * involve arguments to the opcode must be created as we go back up the
+		 * parse tree later.
 		 *
 		 * Note: Name may already exist if we are executing a deferred opcode.
 		 */
@@ -635,7 +658,8 @@ acpi_ds_load2_begin_op (
 		}
 
 		status = acpi_ns_lookup (walk_state->scope_info, buffer_ptr, object_type,
-				  ACPI_IMODE_EXECUTE, ACPI_NS_NO_UPSEARCH, walk_state, &(node));
+				  ACPI_IMODE_EXECUTE, ACPI_NS_NO_UPSEARCH,
+				  walk_state, &(node));
 		break;
 	}
 
@@ -678,8 +702,6 @@ acpi_ds_load2_begin_op (
  * FUNCTION:    acpi_ds_load2_end_op
  *
  * PARAMETERS:  walk_state      - Current state of the parse tree walk
- *              Op              - Op that has been just been completed in the
- *                                walk;  Arguments have now been evaluated.
  *
  * RETURN:      Status
  *
@@ -738,7 +760,8 @@ acpi_ds_load2_end_op (
 
 	/* Pop the scope stack */
 
-	if (acpi_ns_opens_scope (object_type) && (op->common.aml_opcode != AML_INT_METHODCALL_OP)) {
+	if (acpi_ns_opens_scope (object_type) &&
+	   (op->common.aml_opcode != AML_INT_METHODCALL_OP)) {
 		ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "(%s) Popping scope for Op %p\n",
 			acpi_ut_get_type_name (object_type), op));
 
@@ -803,7 +826,7 @@ acpi_ds_load2_end_op (
 		case AML_INDEX_FIELD_OP:
 
 			status = acpi_ds_create_index_field (op, (acpi_handle) arg->common.node,
-					   walk_state);
+					 walk_state);
 			break;
 
 		case AML_BANK_FIELD_OP:
@@ -884,14 +907,16 @@ acpi_ds_load2_end_op (
 #ifndef ACPI_NO_METHOD_EXECUTION
 		case AML_REGION_OP:
 			/*
-			 * The op_region is not fully parsed at this time. Only valid argument is the space_id.
-			 * (We must save the address of the AML of the address and length operands)
+			 * The op_region is not fully parsed at this time. Only valid
+			 * argument is the space_id. (We must save the address of the
+			 * AML of the address and length operands)
 			 */
 			/*
 			 * If we have a valid region, initialize it
 			 * Namespace is NOT locked at this point.
 			 */
-			status = acpi_ev_initialize_region (acpi_ns_get_attached_object (node), FALSE);
+			status = acpi_ev_initialize_region (acpi_ns_get_attached_object (node),
+					 FALSE);
 			if (ACPI_FAILURE (status)) {
 				/*
 				 *  If AE_NOT_EXIST is returned, it is not fatal
@@ -942,15 +967,16 @@ acpi_ds_load2_end_op (
 		if (ACPI_SUCCESS (status)) {
 			/*
 			 * Make sure that what we found is indeed a method
-			 * We didn't search for a method on purpose, to see if the name would resolve
+			 * We didn't search for a method on purpose, to see if the name
+			 * would resolve
 			 */
 			if (new_node->type != ACPI_TYPE_METHOD) {
 				status = AE_AML_OPERAND_TYPE;
 			}
 
-			/* We could put the returned object (Node) on the object stack for later, but
-			 * for now, we will put it in the "op" object that the parser uses, so we
-			 * can get it again at the end of this scope
+			/* We could put the returned object (Node) on the object stack for
+			 * later, but for now, we will put it in the "op" object that the
+			 * parser uses, so we can get it again at the end of this scope
 			 */
 			op->common.node = new_node;
 		}
diff --git a/drivers/acpi/dispatcher/dswscope.c b/drivers/acpi/dispatcher/dswscope.c
index 65f456151e25..21f4548ff323 100644
--- a/drivers/acpi/dispatcher/dswscope.c
+++ b/drivers/acpi/dispatcher/dswscope.c
@@ -50,14 +50,13 @@
 	 ACPI_MODULE_NAME    ("dswscope")
 
 
-#define STACK_POP(head) head
-
-
 /****************************************************************************
  *
  * FUNCTION:    acpi_ds_scope_stack_clear
  *
- * PARAMETERS:  None
+ * PARAMETERS:  walk_state      - Current state
+ *
+ * RETURN:      None
  *
  * DESCRIPTION: Pop (and free) everything on the scope stack except the
  *              root scope object (which remains at the stack top.)
@@ -80,7 +79,8 @@ acpi_ds_scope_stack_clear (
 		walk_state->scope_info = scope_info->scope.next;
 
 		ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
-			"Popped object type (%s)\n", acpi_ut_get_type_name (scope_info->common.value)));
+			"Popped object type (%s)\n",
+			acpi_ut_get_type_name (scope_info->common.value)));
 		acpi_ut_delete_generic_state (scope_info);
 	}
 }
@@ -90,8 +90,11 @@ acpi_ds_scope_stack_clear (
  *
  * FUNCTION:    acpi_ds_scope_stack_push
  *
- * PARAMETERS:  *Node,              - Name to be made current
- *              Type,               - Type of frame being pushed
+ * PARAMETERS:  Node            - Name to be made current
+ *              Type            - Type of frame being pushed
+ *              walk_state      - Current state
+ *
+ * RETURN:      Status
  *
  * DESCRIPTION: Push the current scope on the scope stack, and make the
  *              passed Node current.
@@ -121,7 +124,8 @@ acpi_ds_scope_stack_push (
 	/* Make sure object type is valid */
 
 	if (!acpi_ut_valid_object_type (type)) {
-		ACPI_REPORT_WARNING (("ds_scope_stack_push: Invalid object type: 0x%X\n", type));
+		ACPI_REPORT_WARNING ((
+			"ds_scope_stack_push: Invalid object type: 0x%X\n", type));
 	}
 
 	/* Allocate a new scope object */
@@ -170,16 +174,11 @@ acpi_ds_scope_stack_push (
  *
  * FUNCTION:    acpi_ds_scope_stack_pop
  *
- * PARAMETERS:  Type                - The type of frame to be found
+ * PARAMETERS:  walk_state      - Current state
  *
- * DESCRIPTION: Pop the scope stack until a frame of the requested type
- *              is found.
+ * RETURN:      Status
  *
- * RETURN:      Count of frames popped.  If no frame of the requested type
- *              was found, the count is returned as a negative number and
- *              the scope stack is emptied (which sets the current scope
- *              to the root).  If the scope stack was empty at entry, the
- *              function is a no-op and returns 0.
+ * DESCRIPTION: Pop the scope stack once.
  *
  ***************************************************************************/
 
diff --git a/drivers/acpi/dispatcher/dswstate.c b/drivers/acpi/dispatcher/dswstate.c
index e555b3fbd5e5..9cd3db652b31 100644
--- a/drivers/acpi/dispatcher/dswstate.c
+++ b/drivers/acpi/dispatcher/dswstate.c
@@ -50,67 +50,31 @@
 #define _COMPONENT          ACPI_DISPATCHER
 	 ACPI_MODULE_NAME    ("dswstate")
 
+/* Local prototypes */
 
-#ifdef ACPI_FUTURE_USAGE
-
-/*******************************************************************************
- *
- * FUNCTION:    acpi_ds_result_insert
- *
- * PARAMETERS:  Object              - Object to push
- *              Index               - Where to insert the object
- *              walk_state          - Current Walk state
- *
- * RETURN:      Status
- *
- * DESCRIPTION: Insert an object onto this walk's result stack
- *
- ******************************************************************************/
-
+#ifdef ACPI_OBSOLETE_FUNCTIONS
 acpi_status
 acpi_ds_result_insert (
 	void                            *object,
 	u32                             index,
-	struct acpi_walk_state          *walk_state)
-{
-	union acpi_generic_state        *state;
-
+	struct acpi_walk_state          *walk_state);
 
-	ACPI_FUNCTION_NAME ("ds_result_insert");
-
-
-	state = walk_state->results;
-	if (!state) {
-		ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "No result object pushed! State=%p\n",
-			walk_state));
-		return (AE_NOT_EXIST);
-	}
-
-	if (index >= ACPI_OBJ_NUM_OPERANDS) {
-		ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
-			"Index out of range: %X Obj=%p State=%p Num=%X\n",
-			index, object, walk_state, state->results.num_results));
-		return (AE_BAD_PARAMETER);
-	}
-
-	if (!object) {
-		ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
-			"Null Object! Index=%X Obj=%p State=%p Num=%X\n",
-			index, object, walk_state, state->results.num_results));
-		return (AE_BAD_PARAMETER);
-	}
-
-	state->results.obj_desc [index] = object;
-	state->results.num_results++;
+acpi_status
+acpi_ds_obj_stack_delete_all (
+	struct acpi_walk_state          *walk_state);
 
-	ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
-		"Obj=%p [%s] State=%p Num=%X Cur=%X\n",
-		object, object ? acpi_ut_get_object_type_name ((union acpi_operand_object *) object) : "NULL",
-		walk_state, state->results.num_results, walk_state->current_result));
+acpi_status
+acpi_ds_obj_stack_pop_object (
+	union acpi_operand_object       **object,
+	struct acpi_walk_state          *walk_state);
 
-	return (AE_OK);
-}
+void *
+acpi_ds_obj_stack_get_value (
+	u32                             index,
+	struct acpi_walk_state          *walk_state);
+#endif
 
+#ifdef ACPI_FUTURE_USAGE
 
 /*******************************************************************************
  *
@@ -178,7 +142,6 @@ acpi_ds_result_remove (
 
 #endif  /*  ACPI_FUTURE_USAGE  */
 
-
 /*******************************************************************************
  *
  * FUNCTION:    acpi_ds_result_pop
@@ -227,15 +190,18 @@ acpi_ds_result_pop (
 			*object = state->results.obj_desc [index -1];
 			state->results.obj_desc [index -1] = NULL;
 
-			ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Obj=%p [%s] Index=%X State=%p Num=%X\n",
-				*object, (*object) ? acpi_ut_get_object_type_name (*object) : "NULL",
+			ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
+				"Obj=%p [%s] Index=%X State=%p Num=%X\n",
+				*object,
+				(*object) ? acpi_ut_get_object_type_name (*object) : "NULL",
 				(u32) index -1, walk_state, state->results.num_results));
 
 			return (AE_OK);
 		}
 	}
 
-	ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "No result objects! State=%p\n", walk_state));
+	ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+		"No result objects! State=%p\n", walk_state));
 	return (AE_AML_NO_RETURN_VALUE);
 }
 
@@ -274,7 +240,8 @@ acpi_ds_result_pop_from_bottom (
 	}
 
 	if (!state->results.num_results) {
-		ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "No result objects! State=%p\n", walk_state));
+		ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "No result objects! State=%p\n",
+			walk_state));
 		return (AE_AML_NO_RETURN_VALUE);
 	}
 
@@ -293,7 +260,8 @@ acpi_ds_result_pop_from_bottom (
 	/* Check for a valid result object */
 
 	if (!*object) {
-		ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Null operand! State=%p #Ops=%X, Index=%X\n",
+		ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+			"Null operand! State=%p #Ops=%X, Index=%X\n",
 			walk_state, state->results.num_results, (u32) index));
 		return (AE_AML_NO_RETURN_VALUE);
 	}
@@ -344,7 +312,8 @@ acpi_ds_result_push (
 	}
 
 	if (!object) {
-		ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Null Object! Obj=%p State=%p Num=%X\n",
+		ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+			"Null Object! Obj=%p State=%p Num=%X\n",
 			object, walk_state, state->results.num_results));
 		return (AE_BAD_PARAMETER);
 	}
@@ -439,43 +408,6 @@ acpi_ds_result_stack_pop (
 
 /*******************************************************************************
  *
- * FUNCTION:    acpi_ds_obj_stack_delete_all
- *
- * PARAMETERS:  walk_state          - Current Walk state
- *
- * RETURN:      Status
- *
- * DESCRIPTION: Clear the object stack by deleting all objects that are on it.
- *              Should be used with great care, if at all!
- *
- ******************************************************************************/
-#ifdef ACPI_FUTURE_USAGE
-acpi_status
-acpi_ds_obj_stack_delete_all (
-	struct acpi_walk_state          *walk_state)
-{
-	u32                             i;
-
-
-	ACPI_FUNCTION_TRACE_PTR ("ds_obj_stack_delete_all", walk_state);
-
-
-	/* The stack size is configurable, but fixed */
-
-	for (i = 0; i < ACPI_OBJ_NUM_OPERANDS; i++) {
-		if (walk_state->operands[i]) {
-			acpi_ut_remove_reference (walk_state->operands[i]);
-			walk_state->operands[i] = NULL;
-		}
-	}
-
-	return_ACPI_STATUS (AE_OK);
-}
-#endif  /*  ACPI_FUTURE_USAGE  */
-
-
-/*******************************************************************************
- *
  * FUNCTION:    acpi_ds_obj_stack_push
  *
  * PARAMETERS:  Object              - Object to push
@@ -517,67 +449,6 @@ acpi_ds_obj_stack_push (
 }
 
 
-#if 0
-/*******************************************************************************
- *
- * FUNCTION:    acpi_ds_obj_stack_pop_object
- *
- * PARAMETERS:  pop_count           - Number of objects/entries to pop
- *              walk_state          - Current Walk state
- *
- * RETURN:      Status
- *
- * DESCRIPTION: Pop this walk's object stack.  Objects on the stack are NOT
- *              deleted by this routine.
- *
- ******************************************************************************/
-
-acpi_status
-acpi_ds_obj_stack_pop_object (
-	union acpi_operand_object       **object,
-	struct acpi_walk_state          *walk_state)
-{
-	ACPI_FUNCTION_NAME ("ds_obj_stack_pop_object");
-
-
-	/* Check for stack underflow */
-
-	if (walk_state->num_operands == 0) {
-		ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
-			"Missing operand/stack empty! State=%p #Ops=%X\n",
-			walk_state, walk_state->num_operands));
-		*object = NULL;
-		return (AE_AML_NO_OPERAND);
-	}
-
-	/* Pop the stack */
-
-	walk_state->num_operands--;
-
-	/* Check for a valid operand */
-
-	if (!walk_state->operands [walk_state->num_operands]) {
-		ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
-			"Null operand! State=%p #Ops=%X\n",
-			walk_state, walk_state->num_operands));
-		*object = NULL;
-		return (AE_AML_NO_OPERAND);
-	}
-
-	/* Get operand and set stack entry to null */
-
-	*object = walk_state->operands [walk_state->num_operands];
-	walk_state->operands [walk_state->num_operands] = NULL;
-
-	ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Obj=%p [%s] State=%p #Ops=%X\n",
-			  *object, acpi_ut_get_object_type_name (*object),
-			  walk_state, walk_state->num_operands));
-
-	return (AE_OK);
-}
-#endif
-
-
 /*******************************************************************************
  *
  * FUNCTION:    acpi_ds_obj_stack_pop
@@ -680,48 +551,6 @@ acpi_ds_obj_stack_pop_and_delete (
 
 /*******************************************************************************
  *
- * FUNCTION:    acpi_ds_obj_stack_get_value
- *
- * PARAMETERS:  Index               - Stack index whose value is desired.  Based
- *                                    on the top of the stack (index=0 == top)
- *              walk_state          - Current Walk state
- *
- * RETURN:      Status
- *
- * DESCRIPTION: Retrieve an object from this walk's object stack.  Index must
- *              be within the range of the current stack pointer.
- *
- ******************************************************************************/
-#ifdef ACPI_FUTURE_USAGE
-void *
-acpi_ds_obj_stack_get_value (
-	u32                             index,
-	struct acpi_walk_state          *walk_state)
-{
-
-	ACPI_FUNCTION_TRACE_PTR ("ds_obj_stack_get_value", walk_state);
-
-
-	/* Can't do it if the stack is empty */
-
-	if (walk_state->num_operands == 0) {
-		return_PTR (NULL);
-	}
-
-	/* or if the index is past the top of the stack */
-
-	if (index > (walk_state->num_operands - (u32) 1)) {
-		return_PTR (NULL);
-	}
-
-	return_PTR (walk_state->operands[(acpi_native_uint)(walk_state->num_operands - 1) -
-			  index]);
-}
-#endif  /*  ACPI_FUTURE_USAGE  */
-
-
-/*******************************************************************************
- *
  * FUNCTION:    acpi_ds_get_current_walk_state
  *
  * PARAMETERS:  Thread          - Get current active state for this Thread
@@ -757,11 +586,11 @@ acpi_ds_get_current_walk_state (
  * FUNCTION:    acpi_ds_push_walk_state
  *
  * PARAMETERS:  walk_state      - State to push
- *              walk_list       - The list that owns the walk stack
+ *              Thread          - Thread state object
  *
  * RETURN:      None
  *
- * DESCRIPTION: Place the walk_state at the head of the state list.
+ * DESCRIPTION: Place the Thread state at the head of the state list.
  *
  ******************************************************************************/
 
@@ -784,9 +613,9 @@ acpi_ds_push_walk_state (
  *
  * FUNCTION:    acpi_ds_pop_walk_state
  *
- * PARAMETERS:  walk_list       - The list that owns the walk stack
+ * PARAMETERS:  Thread      - Current thread state
  *
- * RETURN:      A walk_state object popped from the stack
+ * RETURN:      A walk_state object popped from the thread's stack
  *
  * DESCRIPTION: Remove and return the walkstate object that is at the head of
  *              the walk stack for the given walk list.  NULL indicates that
@@ -814,7 +643,7 @@ acpi_ds_pop_walk_state (
 		/*
 		 * Don't clear the NEXT field, this serves as an indicator
 		 * that there is a parent WALK STATE
-		 *     NO: walk_state->Next = NULL;
+		 * Do Not: walk_state->Next = NULL;
 		 */
 	}
 
@@ -826,7 +655,9 @@ acpi_ds_pop_walk_state (
  *
  * FUNCTION:    acpi_ds_create_walk_state
  *
- * PARAMETERS:  Origin          - Starting point for this walk
+ * PARAMETERS:  owner_id        - ID for object creation
+ *              Origin          - Starting point for this walk
+ *              mth_desc        - Method object
  *              Thread          - Current thread state
  *
  * RETURN:      Pointer to the new walk state.
@@ -896,8 +727,7 @@ acpi_ds_create_walk_state (
  *              method_node     - Control method NS node, if any
  *              aml_start       - Start of AML
  *              aml_length      - Length of AML
- *              Params          - Method args, if any
- *              return_obj_desc - Where to store a return object, if any
+ *              Info            - Method info block (params, etc.)
  *              pass_number     - 1, 2, or 3
  *
  * RETURN:      Status
@@ -931,7 +761,7 @@ acpi_ds_init_aml_walk (
 
 	/* The next_op of the next_walk will be the beginning of the method */
 
-	walk_state->next_op             = NULL;
+	walk_state->next_op = NULL;
 
 	if (info) {
 		if (info->parameter_type == ACPI_PARAM_GPE) {
@@ -939,8 +769,8 @@ acpi_ds_init_aml_walk (
 					   info->parameters);
 		}
 		else {
-			walk_state->params              = info->parameters;
-			walk_state->caller_return_desc  = &info->return_object;
+			walk_state->params          = info->parameters;
+			walk_state->caller_return_desc = &info->return_object;
 		}
 	}
 
@@ -964,7 +794,8 @@ acpi_ds_init_aml_walk (
 
 		/* Init the method arguments */
 
-		status = acpi_ds_method_data_init_args (walk_state->params, ACPI_METHOD_NUM_ARGS, walk_state);
+		status = acpi_ds_method_data_init_args (walk_state->params,
+				 ACPI_METHOD_NUM_ARGS, walk_state);
 		if (ACPI_FAILURE (status)) {
 			return_ACPI_STATUS (status);
 		}
@@ -1031,12 +862,14 @@ acpi_ds_delete_walk_state (
 	}
 
 	if (walk_state->data_type != ACPI_DESC_TYPE_WALK) {
-		ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "%p is not a valid walk state\n", walk_state));
+		ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "%p is not a valid walk state\n",
+			walk_state));
 		return;
 	}
 
 	if (walk_state->parser_state.scope) {
-		ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "%p walk still has a scope list\n", walk_state));
+		ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "%p walk still has a scope list\n",
+			walk_state));
 	}
 
 	/* Always must free any linked control states */
@@ -1078,7 +911,7 @@ acpi_ds_delete_walk_state (
  *
  * PARAMETERS:  None
  *
- * RETURN:      Status
+ * RETURN:      None
  *
  * DESCRIPTION: Purge the global state object cache.  Used during subsystem
  *              termination.
@@ -1098,3 +931,200 @@ acpi_ds_delete_walk_state_cache (
 #endif
 
 
+#ifdef ACPI_OBSOLETE_FUNCTIONS
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ds_result_insert
+ *
+ * PARAMETERS:  Object              - Object to push
+ *              Index               - Where to insert the object
+ *              walk_state          - Current Walk state
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Insert an object onto this walk's result stack
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ds_result_insert (
+	void                            *object,
+	u32                             index,
+	struct acpi_walk_state          *walk_state)
+{
+	union acpi_generic_state        *state;
+
+
+	ACPI_FUNCTION_NAME ("ds_result_insert");
+
+
+	state = walk_state->results;
+	if (!state) {
+		ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "No result object pushed! State=%p\n",
+			walk_state));
+		return (AE_NOT_EXIST);
+	}
+
+	if (index >= ACPI_OBJ_NUM_OPERANDS) {
+		ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+			"Index out of range: %X Obj=%p State=%p Num=%X\n",
+			index, object, walk_state, state->results.num_results));
+		return (AE_BAD_PARAMETER);
+	}
+
+	if (!object) {
+		ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+			"Null Object! Index=%X Obj=%p State=%p Num=%X\n",
+			index, object, walk_state, state->results.num_results));
+		return (AE_BAD_PARAMETER);
+	}
+
+	state->results.obj_desc [index] = object;
+	state->results.num_results++;
+
+	ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
+		"Obj=%p [%s] State=%p Num=%X Cur=%X\n",
+		object, object ? acpi_ut_get_object_type_name ((union acpi_operand_object *) object) : "NULL",
+		walk_state, state->results.num_results, walk_state->current_result));
+
+	return (AE_OK);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ds_obj_stack_delete_all
+ *
+ * PARAMETERS:  walk_state          - Current Walk state
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Clear the object stack by deleting all objects that are on it.
+ *              Should be used with great care, if at all!
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ds_obj_stack_delete_all (
+	struct acpi_walk_state          *walk_state)
+{
+	u32                             i;
+
+
+	ACPI_FUNCTION_TRACE_PTR ("ds_obj_stack_delete_all", walk_state);
+
+
+	/* The stack size is configurable, but fixed */
+
+	for (i = 0; i < ACPI_OBJ_NUM_OPERANDS; i++) {
+		if (walk_state->operands[i]) {
+			acpi_ut_remove_reference (walk_state->operands[i]);
+			walk_state->operands[i] = NULL;
+		}
+	}
+
+	return_ACPI_STATUS (AE_OK);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ds_obj_stack_pop_object
+ *
+ * PARAMETERS:  Object              - Where to return the popped object
+ *              walk_state          - Current Walk state
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Pop this walk's object stack.  Objects on the stack are NOT
+ *              deleted by this routine.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ds_obj_stack_pop_object (
+	union acpi_operand_object       **object,
+	struct acpi_walk_state          *walk_state)
+{
+	ACPI_FUNCTION_NAME ("ds_obj_stack_pop_object");
+
+
+	/* Check for stack underflow */
+
+	if (walk_state->num_operands == 0) {
+		ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+			"Missing operand/stack empty! State=%p #Ops=%X\n",
+			walk_state, walk_state->num_operands));
+		*object = NULL;
+		return (AE_AML_NO_OPERAND);
+	}
+
+	/* Pop the stack */
+
+	walk_state->num_operands--;
+
+	/* Check for a valid operand */
+
+	if (!walk_state->operands [walk_state->num_operands]) {
+		ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+			"Null operand! State=%p #Ops=%X\n",
+			walk_state, walk_state->num_operands));
+		*object = NULL;
+		return (AE_AML_NO_OPERAND);
+	}
+
+	/* Get operand and set stack entry to null */
+
+	*object = walk_state->operands [walk_state->num_operands];
+	walk_state->operands [walk_state->num_operands] = NULL;
+
+	ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Obj=%p [%s] State=%p #Ops=%X\n",
+			  *object, acpi_ut_get_object_type_name (*object),
+			  walk_state, walk_state->num_operands));
+
+	return (AE_OK);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ds_obj_stack_get_value
+ *
+ * PARAMETERS:  Index               - Stack index whose value is desired.  Based
+ *                                    on the top of the stack (index=0 == top)
+ *              walk_state          - Current Walk state
+ *
+ * RETURN:      Pointer to the requested operand
+ *
+ * DESCRIPTION: Retrieve an object from this walk's operand stack.  Index must
+ *              be within the range of the current stack pointer.
+ *
+ ******************************************************************************/
+
+void *
+acpi_ds_obj_stack_get_value (
+	u32                             index,
+	struct acpi_walk_state          *walk_state)
+{
+
+	ACPI_FUNCTION_TRACE_PTR ("ds_obj_stack_get_value", walk_state);
+
+
+	/* Can't do it if the stack is empty */
+
+	if (walk_state->num_operands == 0) {
+		return_PTR (NULL);
+	}
+
+	/* or if the index is past the top of the stack */
+
+	if (index > (walk_state->num_operands - (u32) 1)) {
+		return_PTR (NULL);
+	}
+
+	return_PTR (walk_state->operands[(acpi_native_uint)(walk_state->num_operands - 1) -
+			  index]);
+}
+#endif
+
+