Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 715 insertions, 0 deletions

diff --git a/drivers/acpi/dispatcher/dsmthdat.c b/drivers/acpi/dispatcher/dsmthdat.c
new file mode 100644
index 000000000000..f31d095f9833
--- /dev/null
+++ b/drivers/acpi/dispatcher/dsmthdat.c
@@ -0,0 +1,715 @@
+/*******************************************************************************
+ *
+ * Module Name: dsmthdat - control method arguments and local variables
+ *
+ ******************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2005, R. Byron Moore
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce at minimum a disclaimer
+ *    substantially similar to the "NO WARRANTY" disclaimer below
+ *    ("Disclaimer") and any redistribution must be conditioned upon
+ *    including a substantially similar Disclaimer requirement for further
+ *    binary redistribution.
+ * 3. Neither the names of the above-listed copyright holders nor the names
+ *    of any contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2 as published by the Free
+ * Software Foundation.
+ *
+ * NO WARRANTY
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGES.
+ */
+
+
+#include <acpi/acpi.h>
+#include <acpi/acdispat.h>
+#include <acpi/amlcode.h>
+#include <acpi/acnamesp.h>
+#include <acpi/acinterp.h>
+
+
+#define _COMPONENT          ACPI_DISPATCHER
+	 ACPI_MODULE_NAME    ("dsmthdat")
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ds_method_data_init
+ *
+ * PARAMETERS:  walk_state          - Current walk state object
+ *
+ * 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
+ *              special data types.
+ *
+ * NOTES:       walk_state fields are initialized to zero by the
+ *              ACPI_MEM_CALLOCATE().
+ *
+ *              A pseudo-Namespace Node is assigned to each argument and local
+ *              so that ref_of() can return a pointer to the Node.
+ *
+ ******************************************************************************/
+
+void
+acpi_ds_method_data_init (
+	struct acpi_walk_state          *walk_state)
+{
+	u32                             i;
+
+
+	ACPI_FUNCTION_TRACE ("ds_method_data_init");
+
+
+	/* Init the method arguments */
+
+	for (i = 0; i < ACPI_METHOD_NUM_ARGS; i++) {
+		ACPI_MOVE_32_TO_32 (&walk_state->arguments[i].name,
+				   NAMEOF_ARG_NTE);
+		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;
+	}
+
+	/* Init the method locals */
+
+	for (i = 0; i < ACPI_METHOD_NUM_LOCALS; i++) {
+		ACPI_MOVE_32_TO_32 (&walk_state->local_variables[i].name,
+				   NAMEOF_LOCAL_NTE);
+
+		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;
+	}
+
+	return_VOID;
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ds_method_data_delete_all
+ *
+ * PARAMETERS:  walk_state          - Current walk state object
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Delete method locals and arguments.  Arguments are only
+ *              deleted if this method was called from another method.
+ *
+ ******************************************************************************/
+
+void
+acpi_ds_method_data_delete_all (
+	struct acpi_walk_state          *walk_state)
+{
+	u32                             index;
+
+
+	ACPI_FUNCTION_TRACE ("ds_method_data_delete_all");
+
+
+	/* Detach the locals */
+
+	for (index = 0; index < ACPI_METHOD_NUM_LOCALS; index++) {
+		if (walk_state->local_variables[index].object) {
+			ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Deleting Local%d=%p\n",
+					index, walk_state->local_variables[index].object));
+
+			/* Detach object (if present) and remove a reference */
+
+			acpi_ns_detach_object (&walk_state->local_variables[index]);
+		}
+	}
+
+	/* Detach the arguments */
+
+	for (index = 0; index < ACPI_METHOD_NUM_ARGS; index++) {
+		if (walk_state->arguments[index].object) {
+			ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Deleting Arg%d=%p\n",
+					index, walk_state->arguments[index].object));
+
+			/* Detach object (if present) and remove a reference */
+
+			acpi_ns_detach_object (&walk_state->arguments[index]);
+		}
+	}
+
+	return_VOID;
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ds_method_data_init_args
+ *
+ * PARAMETERS:  *Params         - Pointer to a parameter list for the method
+ *              max_param_count - The arg count for this method
+ *              walk_state      - Current walk state object
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Initialize arguments for a method.  The parameter list is a list
+ *              of ACPI operand objects, either null terminated or whose length
+ *              is defined by max_param_count.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ds_method_data_init_args (
+	union acpi_operand_object       **params,
+	u32                             max_param_count,
+	struct acpi_walk_state          *walk_state)
+{
+	acpi_status                     status;
+	u32                             index = 0;
+
+
+	ACPI_FUNCTION_TRACE_PTR ("ds_method_data_init_args", params);
+
+
+	if (!params) {
+		ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "No param list passed to method\n"));
+		return_ACPI_STATUS (AE_OK);
+	}
+
+	/* Copy passed parameters into the new method stack frame  */
+
+	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);
+		if (ACPI_FAILURE (status)) {
+			return_ACPI_STATUS (status);
+		}
+
+		index++;
+	}
+
+	ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "%d args passed to method\n", index));
+	return_ACPI_STATUS (AE_OK);
+}
+
+
+/*******************************************************************************
+ *
+ * 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
+ *              walk_state          - Current walk state object
+ *
+ * RETURN:      Get the Node associated with a local or arg.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ds_method_data_get_node (
+	u16                             opcode,
+	u32                             index,
+	struct acpi_walk_state          *walk_state,
+	struct acpi_namespace_node      **node)
+{
+	ACPI_FUNCTION_TRACE ("ds_method_data_get_node");
+
+
+	/*
+	 * Method Locals and Arguments are supported
+	 */
+	switch (opcode) {
+	case AML_LOCAL_OP:
+
+		if (index > ACPI_METHOD_MAX_LOCAL) {
+			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);
+		}
+
+		/* Return a pointer to the pseudo-node */
+
+		*node = &walk_state->local_variables[index];
+		break;
+
+	case AML_ARG_OP:
+
+		if (index > ACPI_METHOD_MAX_ARG) {
+			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);
+		}
+
+		/* Return a pointer to the pseudo-node */
+
+		*node = &walk_state->arguments[index];
+		break;
+
+	default:
+		ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Opcode %d is invalid\n", opcode));
+		return_ACPI_STATUS (AE_AML_BAD_OPCODE);
+	}
+
+	return_ACPI_STATUS (AE_OK);
+}
+
+
+/*******************************************************************************
+ *
+ * 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
+ *              Object              - Object to be inserted into the stack entry
+ *              walk_state          - Current walk state object
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Insert an object onto the method stack at entry Opcode:Index.
+ *              Note: There is no "implicit conversion" for locals.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ds_method_data_set_value (
+	u16                             opcode,
+	u32                             index,
+	union acpi_operand_object       *object,
+	struct acpi_walk_state          *walk_state)
+{
+	acpi_status                     status;
+	struct acpi_namespace_node      *node;
+
+
+	ACPI_FUNCTION_TRACE ("ds_method_data_set_value");
+
+
+	ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
+		"new_obj %p Opcode %X, Refs=%d [%s]\n", object,
+		opcode, object->common.reference_count,
+		acpi_ut_get_type_name (object->common.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_ACPI_STATUS (status);
+	}
+
+	/*
+	 * Increment ref count so object can't be deleted while installed.
+	 * NOTE: We do not copy the object in order to preserve the call by
+	 * reference semantics of ACPI Control Method invocation.
+	 * (See ACPI specification 2.0_c)
+	 */
+	acpi_ut_add_reference (object);
+
+	/* Install the object */
+
+	node->object = object;
+	return_ACPI_STATUS (status);
+}
+
+
+/*******************************************************************************
+ *
+ * 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
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Retrieve value of selected Arg or Local from the method frame
+ *              at the current top of the method stack.
+ *              Used only in acpi_ex_resolve_to_value().
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ds_method_data_get_value (
+	u16                             opcode,
+	u32                             index,
+	struct acpi_walk_state          *walk_state,
+	union acpi_operand_object       **dest_desc)
+{
+	acpi_status                     status;
+	struct acpi_namespace_node      *node;
+	union acpi_operand_object       *object;
+
+
+	ACPI_FUNCTION_TRACE ("ds_method_data_get_value");
+
+
+	/* Validate the object descriptor */
+
+	if (!dest_desc) {
+		ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Null object descriptor pointer\n"));
+		return_ACPI_STATUS (AE_BAD_PARAMETER);
+	}
+
+	/* 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_ACPI_STATUS (status);
+	}
+
+	/* Get the object from the node */
+
+	object = node->object;
+
+	/* Examine the returned object, it must be valid. */
+
+	if (!object) {
+		/*
+		 * Index points to uninitialized object.
+		 * This means that either 1) The expected argument was
+		 * not passed to the method, or 2) A local variable
+		 * was referenced by the method (via the ASL)
+		 * before it was initialized.  Either case is an error.
+		 */
+
+		/* If slack enabled, init the local_x/arg_x to an Integer of value zero */
+
+		if (acpi_gbl_enable_interpreter_slack) {
+			object = acpi_ut_create_internal_object (ACPI_TYPE_INTEGER);
+			if (!object) {
+				return_ACPI_STATUS (AE_NO_MEMORY);
+			}
+
+			object->integer.value = 0;
+			node->object = object;
+		}
+
+		/* Otherwise, return the error */
+
+		else switch (opcode) {
+		case AML_ARG_OP:
+
+			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",
+				index, node));
+
+			return_ACPI_STATUS (AE_AML_UNINITIALIZED_LOCAL);
+
+		default:
+			ACPI_REPORT_ERROR (("Not Arg/Local opcode: %X\n", opcode));
+			return_ACPI_STATUS (AE_AML_INTERNAL);
+		}
+	}
+
+	/*
+	 * The Index points to an initialized and valid object.
+	 * Return an additional reference to the object
+	 */
+	*dest_desc = object;
+	acpi_ut_add_reference (object);
+
+	return_ACPI_STATUS (AE_OK);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ds_method_data_delete_value
+ *
+ * PARAMETERS:  Opcode              - Either AML_LOCAL_OP or AML_ARG_OP
+ *              Index               - which local_var or argument to delete
+ *              walk_state          - Current walk state object
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Delete the entry at Opcode:Index on the method stack.  Inserts
+ *              a null into the stack slot after the object is deleted.
+ *
+ ******************************************************************************/
+
+void
+acpi_ds_method_data_delete_value (
+	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_delete_value");
+
+
+	/* 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_VOID;
+	}
+
+	/* Get the associated object */
+
+	object = acpi_ns_get_attached_object (node);
+
+	/*
+	 * Undefine the Arg or Local by setting its descriptor
+	 * pointer to NULL. Locals/Args can contain both
+	 * ACPI_OPERAND_OBJECTS and ACPI_NAMESPACE_NODEs
+	 */
+	node->object = NULL;
+
+	if ((object) &&
+		(ACPI_GET_DESCRIPTOR_TYPE (object) == ACPI_DESC_TYPE_OPERAND)) {
+		/*
+		 * There is a valid object.
+		 * Decrement the reference count by one to balance the
+		 * increment when the object was stored.
+		 */
+		acpi_ut_remove_reference (object);
+	}
+
+	return_VOID;
+}
+
+
+/*******************************************************************************
+ *
+ * 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
+ *              obj_desc            - Value to be stored
+ *              walk_state          - Current walk state
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Store a value in an Arg or Local.  The obj_desc is installed
+ *              as the new value for the Arg or Local and the reference count
+ *              for obj_desc is incremented.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ds_store_object_to_local (
+	u16                             opcode,
+	u32                             index,
+	union acpi_operand_object       *obj_desc,
+	struct acpi_walk_state          *walk_state)
+{
+	acpi_status                     status;
+	struct acpi_namespace_node      *node;
+	union acpi_operand_object       *current_obj_desc;
+	union acpi_operand_object       *new_obj_desc;
+
+
+	ACPI_FUNCTION_TRACE ("ds_store_object_to_local");
+	ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Opcode=%X Index=%d Obj=%p\n",
+		opcode, index, obj_desc));
+
+	/* Parameter validation */
+
+	if (!obj_desc) {
+		return_ACPI_STATUS (AE_BAD_PARAMETER);
+	}
+
+	/* 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_ACPI_STATUS (status);
+	}
+
+	current_obj_desc = acpi_ns_get_attached_object (node);
+	if (current_obj_desc == obj_desc) {
+		ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Obj=%p already installed!\n",
+			obj_desc));
+		return_ACPI_STATUS (status);
+	}
+
+	/*
+	 * If the reference count on the object is more than one, we must
+	 * take a copy of the object before we store.  A reference count
+	 * of exactly 1 means that the object was just created during the
+	 * evaluation of an expression, and we can safely use it since it
+	 * is not used anywhere else.
+	 */
+	new_obj_desc = obj_desc;
+	if (obj_desc->common.reference_count > 1) {
+		status = acpi_ut_copy_iobject_to_iobject (obj_desc, &new_obj_desc, walk_state);
+		if (ACPI_FAILURE (status)) {
+			return_ACPI_STATUS (status);
+		}
+	}
+
+	/*
+	 * If there is an object already in this slot, we either
+	 * have to delete it, or if this is an argument and there
+	 * is an object reference stored there, we have to do
+	 * an indirect store!
+	 */
+	if (current_obj_desc) {
+		/*
+		 * Check for an indirect store if an argument
+		 * contains an object reference (stored as an Node).
+		 * We don't allow this automatic dereferencing for
+		 * locals, since a store to a local should overwrite
+		 * anything there, including an object reference.
+		 *
+		 * If both Arg0 and Local0 contain ref_of (Local4):
+		 *
+		 * Store (1, Arg0)             - Causes indirect store to local4
+		 * Store (1, Local0)           - Stores 1 in local0, overwriting
+		 *                                  the reference to local4
+		 * Store (1, de_refof (Local0)) - Causes indirect store to local4
+		 *
+		 * Weird, but true.
+		 */
+		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.
+			 */
+			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)));
+				return_ACPI_STATUS (AE_AML_INTERNAL);
+			}
+
+			/*
+			 * 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)) {
+				ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
+						"Arg (%p) is an obj_ref(Node), storing in node %p\n",
+						new_obj_desc, current_obj_desc));
+
+				/*
+				 * Store this object to the Node (perform the indirect store)
+				 * NOTE: No implicit conversion is performed, as per the ACPI
+				 * specification rules on storing to Locals/Args.
+				 */
+				status = acpi_ex_store_object_to_node (new_obj_desc,
+						 current_obj_desc->reference.object, walk_state,
+						 ACPI_NO_IMPLICIT_CONVERSION);
+
+				/* Remove local reference if we copied the object above */
+
+				if (new_obj_desc != obj_desc) {
+					acpi_ut_remove_reference (new_obj_desc);
+				}
+				return_ACPI_STATUS (status);
+			}
+		}
+
+		/*
+		 * Delete the existing object
+		 * before storing the new one
+		 */
+		acpi_ds_method_data_delete_value (opcode, index, walk_state);
+	}
+
+	/*
+	 * Install the Obj descriptor (*new_obj_desc) into
+	 * the descriptor for the Arg or Local.
+	 * (increments the object reference count by one)
+	 */
+	status = acpi_ds_method_data_set_value (opcode, index, new_obj_desc, walk_state);
+
+	/* Remove local reference if we copied the object above */
+
+	if (new_obj_desc != obj_desc) {
+		acpi_ut_remove_reference (new_obj_desc);
+	}
+
+	return_ACPI_STATUS (status);
+}
+
+