ACPICA: create acpica/ directory

also, delete sleep/ and delete ACPI_CFLAGS from Makefile

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

1 files changed, 752 insertions, 0 deletions

diff --git a/drivers/acpi/acpica/uteval.c b/drivers/acpi/acpica/uteval.c
new file mode 100644
index 000000000000..e1e438cd54a9
--- /dev/null
+++ b/drivers/acpi/acpica/uteval.c
@@ -0,0 +1,752 @@
+/******************************************************************************
+ *
+ * Module Name: uteval - Object evaluation
+ *
+ *****************************************************************************/
+
+/*
+ * 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/acnamesp.h>
+#include <acpi/acinterp.h>
+
+#define _COMPONENT          ACPI_UTILITIES
+ACPI_MODULE_NAME("uteval")
+
+/* Local prototypes */
+static void
+acpi_ut_copy_id_string(char *destination, char *source, acpi_size max_length);
+
+static acpi_status
+acpi_ut_translate_one_cid(union acpi_operand_object *obj_desc,
+                          struct acpi_compatible_id *one_cid);
+
+/*
+ * Strings supported by the _OSI predefined (internal) method.
+ */
+static char *acpi_interfaces_supported[] = {
+        /* Operating System Vendor Strings */
+
+        "Windows 2000",         /* Windows 2000 */
+        "Windows 2001",         /* Windows XP */
+        "Windows 2001 SP1",     /* Windows XP SP1 */
+        "Windows 2001 SP2",     /* Windows XP SP2 */
+        "Windows 2001.1",       /* Windows Server 2003 */
+        "Windows 2001.1 SP1",   /* Windows Server 2003 SP1 - Added 03/2006 */
+        "Windows 2006",         /* Windows Vista - Added 03/2006 */
+
+        /* Feature Group Strings */
+
+        "Extended Address Space Descriptor"
+            /*
+             * All "optional" feature group strings (features that are implemented
+             * by the host) should be implemented in the host version of
+             * acpi_os_validate_interface and should not be added here.
+             */
+};
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_osi_implementation
+ *
+ * PARAMETERS:  walk_state          - Current walk state
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Implementation of the _OSI predefined control method
+ *
+ ******************************************************************************/
+
+acpi_status acpi_ut_osi_implementation(struct acpi_walk_state *walk_state)
+{
+        acpi_status status;
+        union acpi_operand_object *string_desc;
+        union acpi_operand_object *return_desc;
+        u32 i;
+
+        ACPI_FUNCTION_TRACE(ut_osi_implementation);
+
+        /* Validate the string input argument */
+
+        string_desc = walk_state->arguments[0].object;
+        if (!string_desc || (string_desc->common.type != ACPI_TYPE_STRING)) {
+                return_ACPI_STATUS(AE_TYPE);
+        }
+
+        /* Create a return object */
+
+        return_desc = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER);
+        if (!return_desc) {
+                return_ACPI_STATUS(AE_NO_MEMORY);
+        }
+
+        /* Default return value is SUPPORTED */
+
+        return_desc->integer.value = ACPI_UINT32_MAX;
+        walk_state->return_desc = return_desc;
+
+        /* Compare input string to static table of supported interfaces */
+
+        for (i = 0; i < ACPI_ARRAY_LENGTH(acpi_interfaces_supported); i++) {
+                if (!ACPI_STRCMP
+                    (string_desc->string.pointer,
+                     acpi_interfaces_supported[i])) {
+
+                        /* The interface is supported */
+
+                        return_ACPI_STATUS(AE_OK);
+                }
+        }
+
+        /*
+         * Did not match the string in the static table, call the host OSL to
+         * check for a match with one of the optional strings (such as
+         * "Module Device", "3.0 Thermal Model", etc.)
+         */
+        status = acpi_os_validate_interface(string_desc->string.pointer);
+        if (ACPI_SUCCESS(status)) {
+
+                /* The interface is supported */
+
+                return_ACPI_STATUS(AE_OK);
+        }
+
+        /* The interface is not supported */
+
+        return_desc->integer.value = 0;
+        return_ACPI_STATUS(AE_OK);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_osi_invalidate
+ *
+ * PARAMETERS:  interface_string
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: invalidate string in pre-defiend _OSI string list
+ *
+ ******************************************************************************/
+
+acpi_status acpi_osi_invalidate(char *interface)
+{
+        int i;
+
+        for (i = 0; i < ACPI_ARRAY_LENGTH(acpi_interfaces_supported); i++) {
+                if (!ACPI_STRCMP(interface, acpi_interfaces_supported[i])) {
+                        *acpi_interfaces_supported[i] = '\0';
+                        return AE_OK;
+                }
+        }
+        return AE_NOT_FOUND;
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_evaluate_object
+ *
+ * PARAMETERS:  prefix_node         - Starting node
+ *              Path                - Path to object from starting node
+ *              expected_return_types - Bitmap of allowed return types
+ *              return_desc         - Where a return value is stored
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Evaluates a namespace object and verifies the type of the
+ *              return object.  Common code that simplifies accessing objects
+ *              that have required return objects of fixed types.
+ *
+ *              NOTE: Internal function, no parameter validation
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ut_evaluate_object(struct acpi_namespace_node *prefix_node,
+                        char *path,
+                        u32 expected_return_btypes,
+                        union acpi_operand_object **return_desc)
+{
+        struct acpi_evaluate_info *info;
+        acpi_status status;
+        u32 return_btype;
+
+        ACPI_FUNCTION_TRACE(ut_evaluate_object);
+
+        /* Allocate the evaluation information block */
+
+        info = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_evaluate_info));
+        if (!info) {
+                return_ACPI_STATUS(AE_NO_MEMORY);
+        }
+
+        info->prefix_node = prefix_node;
+        info->pathname = path;
+
+        /* Evaluate the object/method */
+
+        status = acpi_ns_evaluate(info);
+        if (ACPI_FAILURE(status)) {
+                if (status == AE_NOT_FOUND) {
+                        ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
+                                          "[%4.4s.%s] was not found\n",
+                                          acpi_ut_get_node_name(prefix_node),
+                                          path));
+                } else {
+                        ACPI_ERROR_METHOD("Method execution failed",
+                                          prefix_node, path, status);
+                }
+
+                goto cleanup;
+        }
+
+        /* Did we get a return object? */
+
+        if (!info->return_object) {
+                if (expected_return_btypes) {
+                        ACPI_ERROR_METHOD("No object was returned from",
+                                          prefix_node, path, AE_NOT_EXIST);
+
+                        status = AE_NOT_EXIST;
+                }
+
+                goto cleanup;
+        }
+
+        /* Map the return object type to the bitmapped type */
+
+        switch (ACPI_GET_OBJECT_TYPE(info->return_object)) {
+        case ACPI_TYPE_INTEGER:
+                return_btype = ACPI_BTYPE_INTEGER;
+                break;
+
+        case ACPI_TYPE_BUFFER:
+                return_btype = ACPI_BTYPE_BUFFER;
+                break;
+
+        case ACPI_TYPE_STRING:
+                return_btype = ACPI_BTYPE_STRING;
+                break;
+
+        case ACPI_TYPE_PACKAGE:
+                return_btype = ACPI_BTYPE_PACKAGE;
+                break;
+
+        default:
+                return_btype = 0;
+                break;
+        }
+
+        if ((acpi_gbl_enable_interpreter_slack) && (!expected_return_btypes)) {
+                /*
+                 * We received a return object, but one was not expected.  This can
+                 * happen frequently if the "implicit return" feature is enabled.
+                 * Just delete the return object and return AE_OK.
+                 */
+                acpi_ut_remove_reference(info->return_object);
+                goto cleanup;
+        }
+
+        /* Is the return object one of the expected types? */
+
+        if (!(expected_return_btypes & return_btype)) {
+                ACPI_ERROR_METHOD("Return object type is incorrect",
+                                  prefix_node, path, AE_TYPE);
+
+                ACPI_ERROR((AE_INFO,
+                            "Type returned from %s was incorrect: %s, expected Btypes: %X",
+                            path,
+                            acpi_ut_get_object_type_name(info->return_object),
+                            expected_return_btypes));
+
+                /* On error exit, we must delete the return object */
+
+                acpi_ut_remove_reference(info->return_object);
+                status = AE_TYPE;
+                goto cleanup;
+        }
+
+        /* Object type is OK, return it */
+
+        *return_desc = info->return_object;
+
+      cleanup:
+        ACPI_FREE(info);
+        return_ACPI_STATUS(status);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_evaluate_numeric_object
+ *
+ * PARAMETERS:  object_name         - Object name to be evaluated
+ *              device_node         - Node for the device
+ *              Address             - Where the value is returned
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Evaluates a numeric namespace object for a selected device
+ *              and stores result in *Address.
+ *
+ *              NOTE: Internal function, no parameter validation
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ut_evaluate_numeric_object(char *object_name,
+                                struct acpi_namespace_node *device_node,
+                                acpi_integer * address)
+{
+        union acpi_operand_object *obj_desc;
+        acpi_status status;
+
+        ACPI_FUNCTION_TRACE(ut_evaluate_numeric_object);
+
+        status = acpi_ut_evaluate_object(device_node, object_name,
+                                         ACPI_BTYPE_INTEGER, &obj_desc);
+        if (ACPI_FAILURE(status)) {
+                return_ACPI_STATUS(status);
+        }
+
+        /* Get the returned Integer */
+
+        *address = obj_desc->integer.value;
+
+        /* On exit, we must delete the return object */
+
+        acpi_ut_remove_reference(obj_desc);
+        return_ACPI_STATUS(status);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_copy_id_string
+ *
+ * PARAMETERS:  Destination         - Where to copy the string
+ *              Source              - Source string
+ *              max_length          - Length of the destination buffer
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Copies an ID string for the _HID, _CID, and _UID methods.
+ *              Performs removal of a leading asterisk if present -- workaround
+ *              for a known issue on a bunch of machines.
+ *
+ ******************************************************************************/
+
+static void
+acpi_ut_copy_id_string(char *destination, char *source, acpi_size max_length)
+{
+
+        /*
+         * Workaround for ID strings that have a leading asterisk. This construct
+         * is not allowed by the ACPI specification  (ID strings must be
+         * alphanumeric), but enough existing machines have this embedded in their
+         * ID strings that the following code is useful.
+         */
+        if (*source == '*') {
+                source++;
+        }
+
+        /* Do the actual copy */
+
+        ACPI_STRNCPY(destination, source, max_length);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_execute_HID
+ *
+ * PARAMETERS:  device_node         - Node for the device
+ *              Hid                 - Where the HID is returned
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Executes the _HID control method that returns the hardware
+ *              ID of the device.
+ *
+ *              NOTE: Internal function, no parameter validation
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ut_execute_HID(struct acpi_namespace_node *device_node,
+                    struct acpica_device_id *hid)
+{
+        union acpi_operand_object *obj_desc;
+        acpi_status status;
+
+        ACPI_FUNCTION_TRACE(ut_execute_HID);
+
+        status = acpi_ut_evaluate_object(device_node, METHOD_NAME__HID,
+                                         ACPI_BTYPE_INTEGER | ACPI_BTYPE_STRING,
+                                         &obj_desc);
+        if (ACPI_FAILURE(status)) {
+                return_ACPI_STATUS(status);
+        }
+
+        if (ACPI_GET_OBJECT_TYPE(obj_desc) == ACPI_TYPE_INTEGER) {
+
+                /* Convert the Numeric HID to string */
+
+                acpi_ex_eisa_id_to_string((u32) obj_desc->integer.value,
+                                          hid->value);
+        } else {
+                /* Copy the String HID from the returned object */
+
+                acpi_ut_copy_id_string(hid->value, obj_desc->string.pointer,
+                                       sizeof(hid->value));
+        }
+
+        /* On exit, we must delete the return object */
+
+        acpi_ut_remove_reference(obj_desc);
+        return_ACPI_STATUS(status);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_translate_one_cid
+ *
+ * PARAMETERS:  obj_desc            - _CID object, must be integer or string
+ *              one_cid             - Where the CID string is returned
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Return a numeric or string _CID value as a string.
+ *              (Compatible ID)
+ *
+ *              NOTE:  Assumes a maximum _CID string length of
+ *                     ACPI_MAX_CID_LENGTH.
+ *
+ ******************************************************************************/
+
+static acpi_status
+acpi_ut_translate_one_cid(union acpi_operand_object *obj_desc,
+                          struct acpi_compatible_id *one_cid)
+{
+
+        switch (ACPI_GET_OBJECT_TYPE(obj_desc)) {
+        case ACPI_TYPE_INTEGER:
+
+                /* Convert the Numeric CID to string */
+
+                acpi_ex_eisa_id_to_string((u32) obj_desc->integer.value,
+                                          one_cid->value);
+                return (AE_OK);
+
+        case ACPI_TYPE_STRING:
+
+                if (obj_desc->string.length > ACPI_MAX_CID_LENGTH) {
+                        return (AE_AML_STRING_LIMIT);
+                }
+
+                /* Copy the String CID from the returned object */
+
+                acpi_ut_copy_id_string(one_cid->value, obj_desc->string.pointer,
+                                       ACPI_MAX_CID_LENGTH);
+                return (AE_OK);
+
+        default:
+
+                return (AE_TYPE);
+        }
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_execute_CID
+ *
+ * PARAMETERS:  device_node         - Node for the device
+ *              return_cid_list     - Where the CID list is returned
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Executes the _CID control method that returns one or more
+ *              compatible hardware IDs for the device.
+ *
+ *              NOTE: Internal function, no parameter validation
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ut_execute_CID(struct acpi_namespace_node * device_node,
+                    struct acpi_compatible_id_list ** return_cid_list)
+{
+        union acpi_operand_object *obj_desc;
+        acpi_status status;
+        u32 count;
+        u32 size;
+        struct acpi_compatible_id_list *cid_list;
+        u32 i;
+
+        ACPI_FUNCTION_TRACE(ut_execute_CID);
+
+        /* Evaluate the _CID method for this device */
+
+        status = acpi_ut_evaluate_object(device_node, METHOD_NAME__CID,
+                                         ACPI_BTYPE_INTEGER | ACPI_BTYPE_STRING
+                                         | ACPI_BTYPE_PACKAGE, &obj_desc);
+        if (ACPI_FAILURE(status)) {
+                return_ACPI_STATUS(status);
+        }
+
+        /* Get the number of _CIDs returned */
+
+        count = 1;
+        if (ACPI_GET_OBJECT_TYPE(obj_desc) == ACPI_TYPE_PACKAGE) {
+                count = obj_desc->package.count;
+        }
+
+        /* Allocate a worst-case buffer for the _CIDs */
+
+        size = (((count - 1) * sizeof(struct acpi_compatible_id)) +
+                sizeof(struct acpi_compatible_id_list));
+
+        cid_list = ACPI_ALLOCATE_ZEROED((acpi_size) size);
+        if (!cid_list) {
+                return_ACPI_STATUS(AE_NO_MEMORY);
+        }
+
+        /* Init CID list */
+
+        cid_list->count = count;
+        cid_list->size = size;
+
+        /*
+         *  A _CID can return either a single compatible ID or a package of
+         *  compatible IDs.  Each compatible ID can be one of the following:
+         *  1) Integer (32 bit compressed EISA ID) or
+         *  2) String (PCI ID format, e.g. "PCI\VEN_vvvv&DEV_dddd&SUBSYS_ssssssss")
+         */
+
+        /* The _CID object can be either a single CID or a package (list) of CIDs */
+
+        if (ACPI_GET_OBJECT_TYPE(obj_desc) == ACPI_TYPE_PACKAGE) {
+
+                /* Translate each package element */
+
+                for (i = 0; i < count; i++) {
+                        status =
+                            acpi_ut_translate_one_cid(obj_desc->package.
+                                                      elements[i],
+                                                      &cid_list->id[i]);
+                        if (ACPI_FAILURE(status)) {
+                                break;
+                        }
+                }
+        } else {
+                /* Only one CID, translate to a string */
+
+                status = acpi_ut_translate_one_cid(obj_desc, cid_list->id);
+        }
+
+        /* Cleanup on error */
+
+        if (ACPI_FAILURE(status)) {
+                ACPI_FREE(cid_list);
+        } else {
+                *return_cid_list = cid_list;
+        }
+
+        /* On exit, we must delete the _CID return object */
+
+        acpi_ut_remove_reference(obj_desc);
+        return_ACPI_STATUS(status);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_execute_UID
+ *
+ * PARAMETERS:  device_node         - Node for the device
+ *              Uid                 - Where the UID is returned
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Executes the _UID control method that returns the hardware
+ *              ID of the device.
+ *
+ *              NOTE: Internal function, no parameter validation
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ut_execute_UID(struct acpi_namespace_node *device_node,
+                    struct acpica_device_id *uid)
+{
+        union acpi_operand_object *obj_desc;
+        acpi_status status;
+
+        ACPI_FUNCTION_TRACE(ut_execute_UID);
+
+        status = acpi_ut_evaluate_object(device_node, METHOD_NAME__UID,
+                                         ACPI_BTYPE_INTEGER | ACPI_BTYPE_STRING,
+                                         &obj_desc);
+        if (ACPI_FAILURE(status)) {
+                return_ACPI_STATUS(status);
+        }
+
+        if (ACPI_GET_OBJECT_TYPE(obj_desc) == ACPI_TYPE_INTEGER) {
+
+                /* Convert the Numeric UID to string */
+
+                acpi_ex_unsigned_integer_to_string(obj_desc->integer.value,
+                                                   uid->value);
+        } else {
+                /* Copy the String UID from the returned object */
+
+                acpi_ut_copy_id_string(uid->value, obj_desc->string.pointer,
+                                       sizeof(uid->value));
+        }
+
+        /* On exit, we must delete the return object */
+
+        acpi_ut_remove_reference(obj_desc);
+        return_ACPI_STATUS(status);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_execute_STA
+ *
+ * PARAMETERS:  device_node         - Node for the device
+ *              Flags               - Where the status flags are returned
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Executes _STA for selected device and stores results in
+ *              *Flags.
+ *
+ *              NOTE: Internal function, no parameter validation
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ut_execute_STA(struct acpi_namespace_node *device_node, u32 * flags)
+{
+        union acpi_operand_object *obj_desc;
+        acpi_status status;
+
+        ACPI_FUNCTION_TRACE(ut_execute_STA);
+
+        status = acpi_ut_evaluate_object(device_node, METHOD_NAME__STA,
+                                         ACPI_BTYPE_INTEGER, &obj_desc);
+        if (ACPI_FAILURE(status)) {
+                if (AE_NOT_FOUND == status) {
+                        ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
+                                          "_STA on %4.4s was not found, assuming device is present\n",
+                                          acpi_ut_get_node_name(device_node)));
+
+                        *flags = ACPI_UINT32_MAX;
+                        status = AE_OK;
+                }
+
+                return_ACPI_STATUS(status);
+        }
+
+        /* Extract the status flags */
+
+        *flags = (u32) obj_desc->integer.value;
+
+        /* On exit, we must delete the return object */
+
+        acpi_ut_remove_reference(obj_desc);
+        return_ACPI_STATUS(status);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_execute_Sxds
+ *
+ * PARAMETERS:  device_node         - Node for the device
+ *              Flags               - Where the status flags are returned
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Executes _STA for selected device and stores results in
+ *              *Flags.
+ *
+ *              NOTE: Internal function, no parameter validation
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ut_execute_sxds(struct acpi_namespace_node *device_node, u8 * highest)
+{
+        union acpi_operand_object *obj_desc;
+        acpi_status status;
+        u32 i;
+
+        ACPI_FUNCTION_TRACE(ut_execute_sxds);
+
+        for (i = 0; i < 4; i++) {
+                highest[i] = 0xFF;
+                status = acpi_ut_evaluate_object(device_node,
+                                                 ACPI_CAST_PTR(char,
+                                                               acpi_gbl_highest_dstate_names
+                                                               [i]),
+                                                 ACPI_BTYPE_INTEGER, &obj_desc);
+                if (ACPI_FAILURE(status)) {
+                        if (status != AE_NOT_FOUND) {
+                                ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
+                                                  "%s on Device %4.4s, %s\n",
+                                                  ACPI_CAST_PTR(char,
+                                                                acpi_gbl_highest_dstate_names
+                                                                [i]),
+                                                  acpi_ut_get_node_name
+                                                  (device_node),
+                                                  acpi_format_exception
+                                                  (status)));
+
+                                return_ACPI_STATUS(status);
+                        }
+                } else {
+                        /* Extract the Dstate value */
+
+                        highest[i] = (u8) obj_desc->integer.value;
+
+                        /* Delete the return object */
+
+                        acpi_ut_remove_reference(obj_desc);
+                }
+        }
+
+        return_ACPI_STATUS(AE_OK);
+}