1 files changed, 716 insertions, 0 deletions

diff --git a/drivers/acpi/acpica/exstore.c b/drivers/acpi/acpica/exstore.c
new file mode 100644
index 000000000000..6f5647fdc006
--- /dev/null
+++ b/drivers/acpi/acpica/exstore.c
@@ -0,0 +1,716 @@
+
+/******************************************************************************
+ *
+ * Module Name: exstore - AML Interpreter object store support
+ *
+ *****************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2008, Intel Corp.
+ * 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/accommon.h>
+#include <acpi/acdispat.h>
+#include <acpi/acinterp.h>
+#include <acpi/amlcode.h>
+#include <acpi/acnamesp.h>
+
+#define _COMPONENT          ACPI_EXECUTER
+ACPI_MODULE_NAME("exstore")
+
+/* Local prototypes */
+static void
+acpi_ex_do_debug_object(union acpi_operand_object *source_desc,
+                        u32 level, u32 index);
+
+static acpi_status
+acpi_ex_store_object_to_index(union acpi_operand_object *val_desc,
+                              union acpi_operand_object *dest_desc,
+                              struct acpi_walk_state *walk_state);
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ex_do_debug_object
+ *
+ * PARAMETERS:  source_desc         - Value to be stored
+ *              Level               - Indentation level (used for packages)
+ *              Index               - Current package element, zero if not pkg
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Handles stores to the Debug Object.
+ *
+ ******************************************************************************/
+
+static void
+acpi_ex_do_debug_object(union acpi_operand_object *source_desc,
+                        u32 level, u32 index)
+{
+        u32 i;
+
+        ACPI_FUNCTION_TRACE_PTR(ex_do_debug_object, source_desc);
+
+        /* Print line header as long as we are not in the middle of an object display */
+
+        if (!((level > 0) && index == 0)) {
+                ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT, "[ACPI Debug] %*s",
+                                      level, " "));
+        }
+
+        /* Display index for package output only */
+
+        if (index > 0) {
+                ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT,
+                                      "(%.2u) ", index - 1));
+        }
+
+        if (!source_desc) {
+                ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT, "[Null Object]\n"));
+                return_VOID;
+        }
+
+        if (ACPI_GET_DESCRIPTOR_TYPE(source_desc) == ACPI_DESC_TYPE_OPERAND) {
+                ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT, "%s ",
+                                      acpi_ut_get_object_type_name
+                                      (source_desc)));
+
+                if (!acpi_ut_valid_internal_object(source_desc)) {
+                        ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT,
+                                              "%p, Invalid Internal Object!\n",
+                                              source_desc));
+                        return_VOID;
+                }
+        } else if (ACPI_GET_DESCRIPTOR_TYPE(source_desc) ==
+                   ACPI_DESC_TYPE_NAMED) {
+                ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT, "%s: %p\n",
+                                      acpi_ut_get_type_name(((struct
+                                                              acpi_namespace_node
+                                                              *)source_desc)->
+                                                            type),
+                                      source_desc));
+                return_VOID;
+        } else {
+                return_VOID;
+        }
+
+        /* source_desc is of type ACPI_DESC_TYPE_OPERAND */
+
+        switch (ACPI_GET_OBJECT_TYPE(source_desc)) {
+        case ACPI_TYPE_INTEGER:
+
+                /* Output correct integer width */
+
+                if (acpi_gbl_integer_byte_width == 4) {
+                        ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT, "0x%8.8X\n",
+                                              (u32) source_desc->integer.
+                                              value));
+                } else {
+                        ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT,
+                                              "0x%8.8X%8.8X\n",
+                                              ACPI_FORMAT_UINT64(source_desc->
+                                                                 integer.
+                                                                 value)));
+                }
+                break;
+
+        case ACPI_TYPE_BUFFER:
+
+                ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT, "[0x%.2X]\n",
+                                      (u32) source_desc->buffer.length));
+                ACPI_DUMP_BUFFER(source_desc->buffer.pointer,
+                                 (source_desc->buffer.length <
+                                  256) ? source_desc->buffer.length : 256);
+                break;
+
+        case ACPI_TYPE_STRING:
+
+                ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT, "[0x%.2X] \"%s\"\n",
+                                      source_desc->string.length,
+                                      source_desc->string.pointer));
+                break;
+
+        case ACPI_TYPE_PACKAGE:
+
+                ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT,
+                                      "[Contains 0x%.2X Elements]\n",
+                                      source_desc->package.count));
+
+                /* Output the entire contents of the package */
+
+                for (i = 0; i < source_desc->package.count; i++) {
+                        acpi_ex_do_debug_object(source_desc->package.
+                                                elements[i], level + 4, i + 1);
+                }
+                break;
+
+        case ACPI_TYPE_LOCAL_REFERENCE:
+
+                ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT, "[%s] ",
+                                      acpi_ut_get_reference_name(source_desc)));
+
+                /* Decode the reference */
+
+                switch (source_desc->reference.class) {
+                case ACPI_REFCLASS_INDEX:
+
+                        ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT, "0x%X\n",
+                                              source_desc->reference.value));
+                        break;
+
+                case ACPI_REFCLASS_TABLE:
+
+                        ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT,
+                                              "Table Index 0x%X\n",
+                                              source_desc->reference.value));
+                        break;
+
+                default:
+                        break;
+                }
+
+                ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT, "  "));
+
+                /* Check for valid node first, then valid object */
+
+                if (source_desc->reference.node) {
+                        if (ACPI_GET_DESCRIPTOR_TYPE
+                            (source_desc->reference.node) !=
+                            ACPI_DESC_TYPE_NAMED) {
+                                ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT,
+                                                      " %p - Not a valid namespace node\n",
+                                                      source_desc->reference.
+                                                      node));
+                        } else {
+                                ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT,
+                                                      "Node %p [%4.4s] ",
+                                                      source_desc->reference.
+                                                      node,
+                                                      (source_desc->reference.
+                                                       node)->name.ascii));
+
+                                switch ((source_desc->reference.node)->type) {
+
+                                        /* These types have no attached object */
+
+                                case ACPI_TYPE_DEVICE:
+                                        acpi_os_printf("Device\n");
+                                        break;
+
+                                case ACPI_TYPE_THERMAL:
+                                        acpi_os_printf("Thermal Zone\n");
+                                        break;
+
+                                default:
+                                        acpi_ex_do_debug_object((source_desc->
+                                                                 reference.
+                                                                 node)->object,
+                                                                level + 4, 0);
+                                        break;
+                                }
+                        }
+                } else if (source_desc->reference.object) {
+                        if (ACPI_GET_DESCRIPTOR_TYPE
+                            (source_desc->reference.object) ==
+                            ACPI_DESC_TYPE_NAMED) {
+                                acpi_ex_do_debug_object(((struct
+                                                          acpi_namespace_node *)
+                                                         source_desc->reference.
+                                                         object)->object,
+                                                        level + 4, 0);
+                        } else {
+                                acpi_ex_do_debug_object(source_desc->reference.
+                                                        object, level + 4, 0);
+                        }
+                }
+                break;
+
+        default:
+
+                ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT, "%p\n",
+                                      source_desc));
+                break;
+        }
+
+        ACPI_DEBUG_PRINT_RAW((ACPI_DB_EXEC, "\n"));
+        return_VOID;
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ex_store
+ *
+ * PARAMETERS:  *source_desc        - Value to be stored
+ *              *dest_desc          - Where to store it.  Must be an NS node
+ *                                    or an union acpi_operand_object of type
+ *                                    Reference;
+ *              walk_state          - Current walk state
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Store the value described by source_desc into the location
+ *              described by dest_desc. Called by various interpreter
+ *              functions to store the result of an operation into
+ *              the destination operand -- not just simply the actual "Store"
+ *              ASL operator.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ex_store(union acpi_operand_object *source_desc,
+              union acpi_operand_object *dest_desc,
+              struct acpi_walk_state *walk_state)
+{
+        acpi_status status = AE_OK;
+        union acpi_operand_object *ref_desc = dest_desc;
+
+        ACPI_FUNCTION_TRACE_PTR(ex_store, dest_desc);
+
+        /* Validate parameters */
+
+        if (!source_desc || !dest_desc) {
+                ACPI_ERROR((AE_INFO, "Null parameter"));
+                return_ACPI_STATUS(AE_AML_NO_OPERAND);
+        }
+
+        /* dest_desc can be either a namespace node or an ACPI object */
+
+        if (ACPI_GET_DESCRIPTOR_TYPE(dest_desc) == ACPI_DESC_TYPE_NAMED) {
+                /*
+                 * Dest is a namespace node,
+                 * Storing an object into a Named node.
+                 */
+                status = acpi_ex_store_object_to_node(source_desc,
+                                                      (struct
+                                                       acpi_namespace_node *)
+                                                      dest_desc, walk_state,
+                                                      ACPI_IMPLICIT_CONVERSION);
+
+                return_ACPI_STATUS(status);
+        }
+
+        /* Destination object must be a Reference or a Constant object */
+
+        switch (ACPI_GET_OBJECT_TYPE(dest_desc)) {
+        case ACPI_TYPE_LOCAL_REFERENCE:
+                break;
+
+        case ACPI_TYPE_INTEGER:
+
+                /* Allow stores to Constants -- a Noop as per ACPI spec */
+
+                if (dest_desc->common.flags & AOPOBJ_AML_CONSTANT) {
+                        return_ACPI_STATUS(AE_OK);
+                }
+
+                /*lint -fallthrough */
+
+        default:
+
+                /* Destination is not a Reference object */
+
+                ACPI_ERROR((AE_INFO,
+                            "Target is not a Reference or Constant object - %s [%p]",
+                            acpi_ut_get_object_type_name(dest_desc),
+                            dest_desc));
+
+                return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
+        }
+
+        /*
+         * Examine the Reference class. These cases are handled:
+         *
+         * 1) Store to Name (Change the object associated with a name)
+         * 2) Store to an indexed area of a Buffer or Package
+         * 3) Store to a Method Local or Arg
+         * 4) Store to the debug object
+         */
+        switch (ref_desc->reference.class) {
+        case ACPI_REFCLASS_REFOF:
+
+                /* Storing an object into a Name "container" */
+
+                status = acpi_ex_store_object_to_node(source_desc,
+                                                      ref_desc->reference.
+                                                      object, walk_state,
+                                                      ACPI_IMPLICIT_CONVERSION);
+                break;
+
+        case ACPI_REFCLASS_INDEX:
+
+                /* Storing to an Index (pointer into a packager or buffer) */
+
+                status =
+                    acpi_ex_store_object_to_index(source_desc, ref_desc,
+                                                  walk_state);
+                break;
+
+        case ACPI_REFCLASS_LOCAL:
+        case ACPI_REFCLASS_ARG:
+
+                /* Store to a method local/arg  */
+
+                status =
+                    acpi_ds_store_object_to_local(ref_desc->reference.class,
+                                                  ref_desc->reference.value,
+                                                  source_desc, walk_state);
+                break;
+
+        case ACPI_REFCLASS_DEBUG:
+
+                /*
+                 * Storing to the Debug object causes the value stored to be
+                 * displayed and otherwise has no effect -- see ACPI Specification
+                 */
+                ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
+                                  "**** Write to Debug Object: Object %p %s ****:\n\n",
+                                  source_desc,
+                                  acpi_ut_get_object_type_name(source_desc)));
+
+                acpi_ex_do_debug_object(source_desc, 0, 0);
+                break;
+
+        default:
+
+                ACPI_ERROR((AE_INFO, "Unknown Reference Class %2.2X",
+                            ref_desc->reference.class));
+                ACPI_DUMP_ENTRY(ref_desc, ACPI_LV_INFO);
+
+                status = AE_AML_INTERNAL;
+                break;
+        }
+
+        return_ACPI_STATUS(status);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ex_store_object_to_index
+ *
+ * PARAMETERS:  *source_desc            - Value to be stored
+ *              *dest_desc              - Named object to receive the value
+ *              walk_state              - Current walk state
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Store the object to indexed Buffer or Package element
+ *
+ ******************************************************************************/
+
+static acpi_status
+acpi_ex_store_object_to_index(union acpi_operand_object *source_desc,
+                              union acpi_operand_object *index_desc,
+                              struct acpi_walk_state *walk_state)
+{
+        acpi_status status = AE_OK;
+        union acpi_operand_object *obj_desc;
+        union acpi_operand_object *new_desc;
+        u8 value = 0;
+        u32 i;
+
+        ACPI_FUNCTION_TRACE(ex_store_object_to_index);
+
+        /*
+         * Destination must be a reference pointer, and
+         * must point to either a buffer or a package
+         */
+        switch (index_desc->reference.target_type) {
+        case ACPI_TYPE_PACKAGE:
+                /*
+                 * Storing to a package element. Copy the object and replace
+                 * any existing object with the new object. No implicit
+                 * conversion is performed.
+                 *
+                 * The object at *(index_desc->Reference.Where) is the
+                 * element within the package that is to be modified.
+                 * The parent package object is at index_desc->Reference.Object
+                 */
+                obj_desc = *(index_desc->reference.where);
+
+                if (ACPI_GET_OBJECT_TYPE(source_desc) ==
+                    ACPI_TYPE_LOCAL_REFERENCE
+                    && source_desc->reference.class == ACPI_REFCLASS_TABLE) {
+
+                        /* This is a DDBHandle, just add a reference to it */
+
+                        acpi_ut_add_reference(source_desc);
+                        new_desc = source_desc;
+                } else {
+                        /* Normal object, copy it */
+
+                        status =
+                            acpi_ut_copy_iobject_to_iobject(source_desc,
+                                                            &new_desc,
+                                                            walk_state);
+                        if (ACPI_FAILURE(status)) {
+                                return_ACPI_STATUS(status);
+                        }
+                }
+
+                if (obj_desc) {
+
+                        /* Decrement reference count by the ref count of the parent package */
+
+                        for (i = 0; i < ((union acpi_operand_object *)
+                                         index_desc->reference.object)->common.
+                             reference_count; i++) {
+                                acpi_ut_remove_reference(obj_desc);
+                        }
+                }
+
+                *(index_desc->reference.where) = new_desc;
+
+                /* Increment ref count by the ref count of the parent package-1 */
+
+                for (i = 1; i < ((union acpi_operand_object *)
+                                 index_desc->reference.object)->common.
+                     reference_count; i++) {
+                        acpi_ut_add_reference(new_desc);
+                }
+
+                break;
+
+        case ACPI_TYPE_BUFFER_FIELD:
+
+                /*
+                 * Store into a Buffer or String (not actually a real buffer_field)
+                 * at a location defined by an Index.
+                 *
+                 * The first 8-bit element of the source object is written to the
+                 * 8-bit Buffer location defined by the Index destination object,
+                 * according to the ACPI 2.0 specification.
+                 */
+
+                /*
+                 * Make sure the target is a Buffer or String. An error should
+                 * not happen here, since the reference_object was constructed
+                 * by the INDEX_OP code.
+                 */
+                obj_desc = index_desc->reference.object;
+                if ((ACPI_GET_OBJECT_TYPE(obj_desc) != ACPI_TYPE_BUFFER) &&
+                    (ACPI_GET_OBJECT_TYPE(obj_desc) != ACPI_TYPE_STRING)) {
+                        return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
+                }
+
+                /*
+                 * The assignment of the individual elements will be slightly
+                 * different for each source type.
+                 */
+                switch (ACPI_GET_OBJECT_TYPE(source_desc)) {
+                case ACPI_TYPE_INTEGER:
+
+                        /* Use the least-significant byte of the integer */
+
+                        value = (u8) (source_desc->integer.value);
+                        break;
+
+                case ACPI_TYPE_BUFFER:
+                case ACPI_TYPE_STRING:
+
+                        /* Note: Takes advantage of common string/buffer fields */
+
+                        value = source_desc->buffer.pointer[0];
+                        break;
+
+                default:
+
+                        /* All other types are invalid */
+
+                        ACPI_ERROR((AE_INFO,
+                                    "Source must be Integer/Buffer/String type, not %s",
+                                    acpi_ut_get_object_type_name(source_desc)));
+                        return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
+                }
+
+                /* Store the source value into the target buffer byte */
+
+                obj_desc->buffer.pointer[index_desc->reference.value] = value;
+                break;
+
+        default:
+                ACPI_ERROR((AE_INFO, "Target is not a Package or BufferField"));
+                status = AE_AML_OPERAND_TYPE;
+                break;
+        }
+
+        return_ACPI_STATUS(status);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ex_store_object_to_node
+ *
+ * PARAMETERS:  source_desc             - Value to be stored
+ *              Node                    - Named object to receive the value
+ *              walk_state              - Current walk state
+ *              implicit_conversion     - Perform implicit conversion (yes/no)
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Store the object to the named object.
+ *
+ *              The Assignment of an object to a named object is handled here
+ *              The value passed in will replace the current value (if any)
+ *              with the input value.
+ *
+ *              When storing into an object the data is converted to the
+ *              target object type then stored in the object.  This means
+ *              that the target object type (for an initialized target) will
+ *              not be changed by a store operation.
+ *
+ *              Assumes parameters are already validated.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ex_store_object_to_node(union acpi_operand_object *source_desc,
+                             struct acpi_namespace_node *node,
+                             struct acpi_walk_state *walk_state,
+                             u8 implicit_conversion)
+{
+        acpi_status status = AE_OK;
+        union acpi_operand_object *target_desc;
+        union acpi_operand_object *new_desc;
+        acpi_object_type target_type;
+
+        ACPI_FUNCTION_TRACE_PTR(ex_store_object_to_node, source_desc);
+
+        /* Get current type of the node, and object attached to Node */
+
+        target_type = acpi_ns_get_type(node);
+        target_desc = acpi_ns_get_attached_object(node);
+
+        ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Storing %p(%s) into node %p(%s)\n",
+                          source_desc,
+                          acpi_ut_get_object_type_name(source_desc), node,
+                          acpi_ut_get_type_name(target_type)));
+
+        /*
+         * Resolve the source object to an actual value
+         * (If it is a reference object)
+         */
+        status = acpi_ex_resolve_object(&source_desc, target_type, walk_state);
+        if (ACPI_FAILURE(status)) {
+                return_ACPI_STATUS(status);
+        }
+
+        /* If no implicit conversion, drop into the default case below */
+
+        if ((!implicit_conversion) ||
+            ((walk_state->opcode == AML_COPY_OP) &&
+             (target_type != ACPI_TYPE_LOCAL_REGION_FIELD) &&
+             (target_type != ACPI_TYPE_LOCAL_BANK_FIELD) &&
+             (target_type != ACPI_TYPE_LOCAL_INDEX_FIELD))) {
+                /*
+                 * Force execution of default (no implicit conversion). Note:
+                 * copy_object does not perform an implicit conversion, as per the ACPI
+                 * spec -- except in case of region/bank/index fields -- because these
+                 * objects must retain their original type permanently.
+                 */
+                target_type = ACPI_TYPE_ANY;
+        }
+
+        /* Do the actual store operation */
+
+        switch (target_type) {
+        case ACPI_TYPE_BUFFER_FIELD:
+        case ACPI_TYPE_LOCAL_REGION_FIELD:
+        case ACPI_TYPE_LOCAL_BANK_FIELD:
+        case ACPI_TYPE_LOCAL_INDEX_FIELD:
+
+                /* For fields, copy the source data to the target field. */
+
+                status = acpi_ex_write_data_to_field(source_desc, target_desc,
+                                                     &walk_state->result_obj);
+                break;
+
+        case ACPI_TYPE_INTEGER:
+        case ACPI_TYPE_STRING:
+        case ACPI_TYPE_BUFFER:
+
+                /*
+                 * These target types are all of type Integer/String/Buffer, and
+                 * therefore support implicit conversion before the store.
+                 *
+                 * Copy and/or convert the source object to a new target object
+                 */
+                status =
+                    acpi_ex_store_object_to_object(source_desc, target_desc,
+                                                   &new_desc, walk_state);
+                if (ACPI_FAILURE(status)) {
+                        return_ACPI_STATUS(status);
+                }
+
+                if (new_desc != target_desc) {
+                        /*
+                         * Store the new new_desc as the new value of the Name, and set
+                         * the Name's type to that of the value being stored in it.
+                         * source_desc reference count is incremented by attach_object.
+                         *
+                         * Note: This may change the type of the node if an explicit store
+                         * has been performed such that the node/object type has been
+                         * changed.
+                         */
+                        status =
+                            acpi_ns_attach_object(node, new_desc,
+                                                  new_desc->common.type);
+
+                        ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
+                                          "Store %s into %s via Convert/Attach\n",
+                                          acpi_ut_get_object_type_name
+                                          (source_desc),
+                                          acpi_ut_get_object_type_name
+                                          (new_desc)));
+                }
+                break;
+
+        default:
+
+                ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
+                                  "Storing %s (%p) directly into node (%p) with no implicit conversion\n",
+                                  acpi_ut_get_object_type_name(source_desc),
+                                  source_desc, node));
+
+                /* No conversions for all other types.  Just attach the source object */
+
+                status = acpi_ns_attach_object(node, source_desc,
+                                               ACPI_GET_OBJECT_TYPE
+                                               (source_desc));
+                break;
+        }
+
+        return_ACPI_STATUS(status);
+}