linux-imx

// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0

/*******************************************************************************

 *

 * Module Name: rscreate - Create resource lists/tables

 *

 ******************************************************************************/

​

#include <acpi/acpi.h>

#include "accommon.h"

#include "acresrc.h"

#include "acnamesp.h"

​

#define _COMPONENT          ACPI_RESOURCES

ACPI_MODULE_NAME("rscreate")

​

/*******************************************************************************

 *

 * FUNCTION:    acpi_buffer_to_resource

 *

 * PARAMETERS:  aml_buffer          - Pointer to the resource byte stream

 *              aml_buffer_length   - Length of the aml_buffer

 *              resource_ptr        - Where the converted resource is returned

 *

 * RETURN:      Status

 *

 * DESCRIPTION: Convert a raw AML buffer to a resource list

 *

 ******************************************************************************/

acpi_status

acpi_buffer_to_resource(u8 *aml_buffer,

            u16 aml_buffer_length,

            struct acpi_resource **resource_ptr)

{

    acpi_status status;

    acpi_size list_size_needed;

    void *resource;

    void *current_resource_ptr;

​

    ACPI_FUNCTION_TRACE(acpi_buffer_to_resource);

​

    /*

     * Note: we allow AE_AML_NO_RESOURCE_END_TAG, since an end tag

     * is not required here.

     */

​

    /* Get the required length for the converted resource */

​

    status =

        acpi_rs_get_list_length(aml_buffer, aml_buffer_length,

                    &list_size_needed);

    if (status == AE_AML_NO_RESOURCE_END_TAG) {

        status = AE_OK;

    }

    if (ACPI_FAILURE(status)) {

        return_ACPI_STATUS(status);

    }

​

    /* Allocate a buffer for the converted resource */

​

    resource = ACPI_ALLOCATE_ZEROED(list_size_needed);

    current_resource_ptr = resource;

    if (!resource) {

        return_ACPI_STATUS(AE_NO_MEMORY);