ACPICA 20050408 from Bob Moore

Fixed three cases in the interpreter where an "index"
argument to an ASL function was still (internally) 32
bits instead of the required 64 bits.  This was the Index
argument to the Index, Mid, and Match operators.

The "strupr" function is now permanently local
(acpi_ut_strupr), since this is not a POSIX-defined
function and not present in most kernel-level C
libraries. References to the C library strupr function
have been removed from the headers.

Completed the deployment of static
functions/prototypes. All prototypes with the static
attribute have been moved from the headers to the owning
C file.

ACPICA 20050329 from Bob Moore

An error is now generated if an attempt is made to create
a Buffer Field of length zero (A CreateField with a length
operand of zero.)

The interpreter now issues a warning whenever executable
code at the module level is detected during ACPI table
load. This will give some idea of the prevalence of this
type of code.

Implemented support for references to named objects (other
than control methods) within package objects.

Enhanced package object output for the debug
object. Package objects are now completely dumped, showing
all elements.

Enhanced miscellaneous object output for the debug
object. Any object can now be written to the debug object
(for example, a device object can be written, and the type
of the object will be displayed.)

The "static" qualifier has been added to all local
functions across the core subsystem.

The number of "long" lines (> 80 chars) within the source
has been significantly reduced, by about 1/3.

Cleaned up all header files to ensure that all CA/iASL
functions are prototyped (even static functions) and the
formatting is consistent.

Two new header files have been added, acopcode.h and
acnames.h.

Removed several obsolete functions that were no longer
used.

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
+
+