--- old/usr/src/uts/intel/io/acpica/utilities/utalloc.c	ven. janv. 17 07:30:42 2014
+++ /dev/null	ven. janv. 17 07:30:42 2014
@@ -1,416 +0,0 @@
-/******************************************************************************
- *
- * Module Name: utalloc - local memory allocation routines
- *
- *****************************************************************************/
-
-/*
- * Copyright (C) 2000 - 2011, 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.
- */
-
-#define __UTALLOC_C__
-
-#include "acpi.h"
-#include "accommon.h"
-#include "acdebug.h"
-
-#define _COMPONENT          ACPI_UTILITIES
-        ACPI_MODULE_NAME    ("utalloc")
-
-
-/*******************************************************************************
- *
- * FUNCTION:    AcpiUtCreateCaches
- *
- * PARAMETERS:  None
- *
- * RETURN:      Status
- *
- * DESCRIPTION: Create all local caches
- *
- ******************************************************************************/
-
-ACPI_STATUS
-AcpiUtCreateCaches (
-    void)
-{
-    ACPI_STATUS             Status;
-
-
-    /* Object Caches, for frequently used objects */
-
-    Status = AcpiOsCreateCache ("Acpi-Namespace", sizeof (ACPI_NAMESPACE_NODE),
-                ACPI_MAX_NAMESPACE_CACHE_DEPTH, &AcpiGbl_NamespaceCache);
-    if (ACPI_FAILURE (Status))
-    {
-        return (Status);
-    }
-
-    Status = AcpiOsCreateCache ("Acpi-State", sizeof (ACPI_GENERIC_STATE),
-                ACPI_MAX_STATE_CACHE_DEPTH, &AcpiGbl_StateCache);
-    if (ACPI_FAILURE (Status))
-    {
-        return (Status);
-    }
-
-    Status = AcpiOsCreateCache ("Acpi-Parse", sizeof (ACPI_PARSE_OBJ_COMMON),
-                ACPI_MAX_PARSE_CACHE_DEPTH, &AcpiGbl_PsNodeCache);
-    if (ACPI_FAILURE (Status))
-    {
-        return (Status);
-    }
-
-    Status = AcpiOsCreateCache ("Acpi-ParseExt", sizeof (ACPI_PARSE_OBJ_NAMED),
-                ACPI_MAX_EXTPARSE_CACHE_DEPTH, &AcpiGbl_PsNodeExtCache);
-    if (ACPI_FAILURE (Status))
-    {
-        return (Status);
-    }
-
-    Status = AcpiOsCreateCache ("Acpi-Operand", sizeof (ACPI_OPERAND_OBJECT),
-                ACPI_MAX_OBJECT_CACHE_DEPTH, &AcpiGbl_OperandCache);
-    if (ACPI_FAILURE (Status))
-    {
-        return (Status);
-    }
-
-
-#ifdef ACPI_DBG_TRACK_ALLOCATIONS
-
-    /* Memory allocation lists */
-
-    Status = AcpiUtCreateList ("Acpi-Global", 0,
-                &AcpiGbl_GlobalList);
-    if (ACPI_FAILURE (Status))
-    {
-        return (Status);
-    }
-
-    Status = AcpiUtCreateList ("Acpi-Namespace", sizeof (ACPI_NAMESPACE_NODE),
-                &AcpiGbl_NsNodeList);
-    if (ACPI_FAILURE (Status))
-    {
-        return (Status);
-    }
-#endif
-
-    return (AE_OK);
-}
-
-
-/*******************************************************************************
- *
- * FUNCTION:    AcpiUtDeleteCaches
- *
- * PARAMETERS:  None
- *
- * RETURN:      Status
- *
- * DESCRIPTION: Purge and delete all local caches
- *
- ******************************************************************************/
-
-ACPI_STATUS
-AcpiUtDeleteCaches (
-    void)
-{
-#ifdef ACPI_DBG_TRACK_ALLOCATIONS
-    char                    Buffer[7];
-
-    if (AcpiGbl_DisplayFinalMemStats)
-    {
-        ACPI_STRCPY (Buffer, "MEMORY");
-        (void) AcpiDbDisplayStatistics (Buffer);
-    }
-#endif
-
-    (void) AcpiOsDeleteCache (AcpiGbl_NamespaceCache);
-    AcpiGbl_NamespaceCache = NULL;
-
-    (void) AcpiOsDeleteCache (AcpiGbl_StateCache);
-    AcpiGbl_StateCache = NULL;
-
-    (void) AcpiOsDeleteCache (AcpiGbl_OperandCache);
-    AcpiGbl_OperandCache = NULL;
-
-    (void) AcpiOsDeleteCache (AcpiGbl_PsNodeCache);
-    AcpiGbl_PsNodeCache = NULL;
-
-    (void) AcpiOsDeleteCache (AcpiGbl_PsNodeExtCache);
-    AcpiGbl_PsNodeExtCache = NULL;
-
-
-#ifdef ACPI_DBG_TRACK_ALLOCATIONS
-
-    /* Debug only - display leftover memory allocation, if any */
-
-    AcpiUtDumpAllocations (ACPI_UINT32_MAX, NULL);
-
-    /* Free memory lists */
-
-    AcpiOsFree (AcpiGbl_GlobalList);
-    AcpiGbl_GlobalList = NULL;
-
-    AcpiOsFree (AcpiGbl_NsNodeList);
-    AcpiGbl_NsNodeList = NULL;
-#endif
-
-    return (AE_OK);
-}
-
-
-/*******************************************************************************
- *
- * FUNCTION:    AcpiUtValidateBuffer
- *
- * PARAMETERS:  Buffer              - Buffer descriptor to be validated
- *
- * RETURN:      Status
- *
- * DESCRIPTION: Perform parameter validation checks on an ACPI_BUFFER
- *
- ******************************************************************************/
-
-ACPI_STATUS
-AcpiUtValidateBuffer (
-    ACPI_BUFFER             *Buffer)
-{
-
-    /* Obviously, the structure pointer must be valid */
-
-    if (!Buffer)
-    {
-        return (AE_BAD_PARAMETER);
-    }
-
-    /* Special semantics for the length */
-
-    if ((Buffer->Length == ACPI_NO_BUFFER)              ||
-        (Buffer->Length == ACPI_ALLOCATE_BUFFER)        ||
-        (Buffer->Length == ACPI_ALLOCATE_LOCAL_BUFFER))
-    {
-        return (AE_OK);
-    }
-
-    /* Length is valid, the buffer pointer must be also */
-
-    if (!Buffer->Pointer)
-    {
-        return (AE_BAD_PARAMETER);
-    }
-
-    return (AE_OK);
-}
-
-
-/*******************************************************************************
- *
- * FUNCTION:    AcpiUtInitializeBuffer
- *
- * PARAMETERS:  Buffer              - Buffer to be validated
- *              RequiredLength      - Length needed
- *
- * RETURN:      Status
- *
- * DESCRIPTION: Validate that the buffer is of the required length or
- *              allocate a new buffer. Returned buffer is always zeroed.
- *
- ******************************************************************************/
-
-ACPI_STATUS
-AcpiUtInitializeBuffer (
-    ACPI_BUFFER             *Buffer,
-    ACPI_SIZE               RequiredLength)
-{
-    ACPI_SIZE               InputBufferLength;
-
-
-    /* Parameter validation */
-
-    if (!Buffer || !RequiredLength)
-    {
-        return (AE_BAD_PARAMETER);
-    }
-
-    /*
-     * Buffer->Length is used as both an input and output parameter. Get the
-     * input actual length and set the output required buffer length.
-     */
-    InputBufferLength = Buffer->Length;
-    Buffer->Length = RequiredLength;
-
-    /*
-     * The input buffer length contains the actual buffer length, or the type
-     * of buffer to be allocated by this routine.
-     */
-    switch (InputBufferLength)
-    {
-    case ACPI_NO_BUFFER:
-
-        /* Return the exception (and the required buffer length) */
-
-        return (AE_BUFFER_OVERFLOW);
-
-    case ACPI_ALLOCATE_BUFFER:
-
-        /* Allocate a new buffer */
-
-        Buffer->Pointer = AcpiOsAllocate (RequiredLength);
-        break;
-
-    case ACPI_ALLOCATE_LOCAL_BUFFER:
-
-        /* Allocate a new buffer with local interface to allow tracking */
-
-        Buffer->Pointer = ACPI_ALLOCATE (RequiredLength);
-        break;
-
-    default:
-
-        /* Existing buffer: Validate the size of the buffer */
-
-        if (InputBufferLength < RequiredLength)
-        {
-            return (AE_BUFFER_OVERFLOW);
-        }
-        break;
-    }
-
-    /* Validate allocation from above or input buffer pointer */
-
-    if (!Buffer->Pointer)
-    {
-        return (AE_NO_MEMORY);
-    }
-
-    /* Have a valid buffer, clear it */
-
-    ACPI_MEMSET (Buffer->Pointer, 0, RequiredLength);
-    return (AE_OK);
-}
-
-
-/*******************************************************************************
- *
- * FUNCTION:    AcpiUtAllocate
- *
- * PARAMETERS:  Size                - Size of the allocation
- *              Component           - Component type of caller
- *              Module              - Source file name of caller
- *              Line                - Line number of caller
- *
- * RETURN:      Address of the allocated memory on success, NULL on failure.
- *
- * DESCRIPTION: Subsystem equivalent of malloc.
- *
- ******************************************************************************/
-
-void *
-AcpiUtAllocate (
-    ACPI_SIZE               Size,
-    UINT32                  Component,
-    const char              *Module,
-    UINT32                  Line)
-{
-    void                    *Allocation;
-
-
-    ACPI_FUNCTION_TRACE_U32 (UtAllocate, Size);
-
-
-    /* Check for an inadvertent size of zero bytes */
-
-    if (!Size)
-    {
-        ACPI_WARNING ((Module, Line,
-            "Attempt to allocate zero bytes, allocating 1 byte"));
-        Size = 1;
-    }
-
-    Allocation = AcpiOsAllocate (Size);
-    if (!Allocation)
-    {
-        /* Report allocation error */
-
-        ACPI_WARNING ((Module, Line,
-            "Could not allocate size %u", (UINT32) Size));
-
-        return_PTR (NULL);
-    }
-
-    return_PTR (Allocation);
-}
-
-
-/*******************************************************************************
- *
- * FUNCTION:    AcpiUtAllocateZeroed
- *
- * PARAMETERS:  Size                - Size of the allocation
- *              Component           - Component type of caller
- *              Module              - Source file name of caller
- *              Line                - Line number of caller
- *
- * RETURN:      Address of the allocated memory on success, NULL on failure.
- *
- * DESCRIPTION: Subsystem equivalent of calloc. Allocate and zero memory.
- *
- ******************************************************************************/
-
-void *
-AcpiUtAllocateZeroed (
-    ACPI_SIZE               Size,
-    UINT32                  Component,
-    const char              *Module,
-    UINT32                  Line)
-{
-    void                    *Allocation;
-
-
-    ACPI_FUNCTION_ENTRY ();
-
-
-    Allocation = AcpiUtAllocate (Size, Component, Module, Line);
-    if (Allocation)
-    {
-        /* Clear the memory block */
-
-        ACPI_MEMSET (Allocation, 0, Size);
-    }
-
-    return (Allocation);
-}
-
--- /dev/null	ven. janv. 17 07:30:42 2014
+++ new/usr/src/common/acpica/components/utilities/utalloc.c	ven. janv. 17 07:30:42 2014
@@ -0,0 +1,366 @@
+/******************************************************************************
+ *
+ * Module Name: utalloc - local memory allocation routines
+ *
+ *****************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2014, 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.
+ */
+
+#define __UTALLOC_C__
+
+#include "acpi.h"
+#include "accommon.h"
+#include "acdebug.h"
+
+#define _COMPONENT          ACPI_UTILITIES
+        ACPI_MODULE_NAME    ("utalloc")
+
+
+#if !defined (USE_NATIVE_ALLOCATE_ZEROED)
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiOsAllocateZeroed
+ *
+ * PARAMETERS:  Size                - Size of the allocation
+ *
+ * RETURN:      Address of the allocated memory on success, NULL on failure.
+ *
+ * DESCRIPTION: Subsystem equivalent of calloc. Allocate and zero memory.
+ *              This is the default implementation. Can be overridden via the
+ *              USE_NATIVE_ALLOCATE_ZEROED flag.
+ *
+ ******************************************************************************/
+
+void *
+AcpiOsAllocateZeroed (
+    ACPI_SIZE               Size)
+{
+    void                    *Allocation;
+
+
+    ACPI_FUNCTION_ENTRY ();
+
+
+    Allocation = AcpiOsAllocate (Size);
+    if (Allocation)
+    {
+        /* Clear the memory block */
+
+        ACPI_MEMSET (Allocation, 0, Size);
+    }
+
+    return (Allocation);
+}
+
+#endif /* !USE_NATIVE_ALLOCATE_ZEROED */
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiUtCreateCaches
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Create all local caches
+ *
+ ******************************************************************************/
+
+ACPI_STATUS
+AcpiUtCreateCaches (
+    void)
+{
+    ACPI_STATUS             Status;
+
+
+    /* Object Caches, for frequently used objects */
+
+    Status = AcpiOsCreateCache ("Acpi-Namespace", sizeof (ACPI_NAMESPACE_NODE),
+                ACPI_MAX_NAMESPACE_CACHE_DEPTH, &AcpiGbl_NamespaceCache);
+    if (ACPI_FAILURE (Status))
+    {
+        return (Status);
+    }
+
+    Status = AcpiOsCreateCache ("Acpi-State", sizeof (ACPI_GENERIC_STATE),
+                ACPI_MAX_STATE_CACHE_DEPTH, &AcpiGbl_StateCache);
+    if (ACPI_FAILURE (Status))
+    {
+        return (Status);
+    }
+
+    Status = AcpiOsCreateCache ("Acpi-Parse", sizeof (ACPI_PARSE_OBJ_COMMON),
+                ACPI_MAX_PARSE_CACHE_DEPTH, &AcpiGbl_PsNodeCache);
+    if (ACPI_FAILURE (Status))
+    {
+        return (Status);
+    }
+
+    Status = AcpiOsCreateCache ("Acpi-ParseExt", sizeof (ACPI_PARSE_OBJ_NAMED),
+                ACPI_MAX_EXTPARSE_CACHE_DEPTH, &AcpiGbl_PsNodeExtCache);
+    if (ACPI_FAILURE (Status))
+    {
+        return (Status);
+    }
+
+    Status = AcpiOsCreateCache ("Acpi-Operand", sizeof (ACPI_OPERAND_OBJECT),
+                ACPI_MAX_OBJECT_CACHE_DEPTH, &AcpiGbl_OperandCache);
+    if (ACPI_FAILURE (Status))
+    {
+        return (Status);
+    }
+
+
+#ifdef ACPI_DBG_TRACK_ALLOCATIONS
+
+    /* Memory allocation lists */
+
+    Status = AcpiUtCreateList ("Acpi-Global", 0,
+                &AcpiGbl_GlobalList);
+    if (ACPI_FAILURE (Status))
+    {
+        return (Status);
+    }
+
+    Status = AcpiUtCreateList ("Acpi-Namespace", sizeof (ACPI_NAMESPACE_NODE),
+                &AcpiGbl_NsNodeList);
+    if (ACPI_FAILURE (Status))
+    {
+        return (Status);
+    }
+#endif
+
+    return (AE_OK);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiUtDeleteCaches
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Purge and delete all local caches
+ *
+ ******************************************************************************/
+
+ACPI_STATUS
+AcpiUtDeleteCaches (
+    void)
+{
+#ifdef ACPI_DBG_TRACK_ALLOCATIONS
+    char                    Buffer[7];
+
+    if (AcpiGbl_DisplayFinalMemStats)
+    {
+        ACPI_STRCPY (Buffer, "MEMORY");
+        (void) AcpiDbDisplayStatistics (Buffer);
+    }
+#endif
+
+    (void) AcpiOsDeleteCache (AcpiGbl_NamespaceCache);
+    AcpiGbl_NamespaceCache = NULL;
+
+    (void) AcpiOsDeleteCache (AcpiGbl_StateCache);
+    AcpiGbl_StateCache = NULL;
+
+    (void) AcpiOsDeleteCache (AcpiGbl_OperandCache);
+    AcpiGbl_OperandCache = NULL;
+
+    (void) AcpiOsDeleteCache (AcpiGbl_PsNodeCache);
+    AcpiGbl_PsNodeCache = NULL;
+
+    (void) AcpiOsDeleteCache (AcpiGbl_PsNodeExtCache);
+    AcpiGbl_PsNodeExtCache = NULL;
+
+
+#ifdef ACPI_DBG_TRACK_ALLOCATIONS
+
+    /* Debug only - display leftover memory allocation, if any */
+
+    AcpiUtDumpAllocations (ACPI_UINT32_MAX, NULL);
+
+    /* Free memory lists */
+
+    AcpiOsFree (AcpiGbl_GlobalList);
+    AcpiGbl_GlobalList = NULL;
+
+    AcpiOsFree (AcpiGbl_NsNodeList);
+    AcpiGbl_NsNodeList = NULL;
+#endif
+
+    return (AE_OK);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiUtValidateBuffer
+ *
+ * PARAMETERS:  Buffer              - Buffer descriptor to be validated
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Perform parameter validation checks on an ACPI_BUFFER
+ *
+ ******************************************************************************/
+
+ACPI_STATUS
+AcpiUtValidateBuffer (
+    ACPI_BUFFER             *Buffer)
+{
+
+    /* Obviously, the structure pointer must be valid */
+
+    if (!Buffer)
+    {
+        return (AE_BAD_PARAMETER);
+    }
+
+    /* Special semantics for the length */
+
+    if ((Buffer->Length == ACPI_NO_BUFFER)              ||
+        (Buffer->Length == ACPI_ALLOCATE_BUFFER)        ||
+        (Buffer->Length == ACPI_ALLOCATE_LOCAL_BUFFER))
+    {
+        return (AE_OK);
+    }
+
+    /* Length is valid, the buffer pointer must be also */
+
+    if (!Buffer->Pointer)
+    {
+        return (AE_BAD_PARAMETER);
+    }
+
+    return (AE_OK);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiUtInitializeBuffer
+ *
+ * PARAMETERS:  Buffer              - Buffer to be validated
+ *              RequiredLength      - Length needed
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Validate that the buffer is of the required length or
+ *              allocate a new buffer. Returned buffer is always zeroed.
+ *
+ ******************************************************************************/
+
+ACPI_STATUS
+AcpiUtInitializeBuffer (
+    ACPI_BUFFER             *Buffer,
+    ACPI_SIZE               RequiredLength)
+{
+    ACPI_SIZE               InputBufferLength;
+
+
+    /* Parameter validation */
+
+    if (!Buffer || !RequiredLength)
+    {
+        return (AE_BAD_PARAMETER);
+    }
+
+    /*
+     * Buffer->Length is used as both an input and output parameter. Get the
+     * input actual length and set the output required buffer length.
+     */
+    InputBufferLength = Buffer->Length;
+    Buffer->Length = RequiredLength;
+
+    /*
+     * The input buffer length contains the actual buffer length, or the type
+     * of buffer to be allocated by this routine.
+     */
+    switch (InputBufferLength)
+    {
+    case ACPI_NO_BUFFER:
+
+        /* Return the exception (and the required buffer length) */
+
+        return (AE_BUFFER_OVERFLOW);
+
+    case ACPI_ALLOCATE_BUFFER:
+        /*
+         * Allocate a new buffer. We directectly call AcpiOsAllocate here to
+         * purposefully bypass the (optionally enabled) internal allocation
+         * tracking mechanism since we only want to track internal
+         * allocations. Note: The caller should use AcpiOsFree to free this
+         * buffer created via ACPI_ALLOCATE_BUFFER.
+         */
+        Buffer->Pointer = AcpiOsAllocate (RequiredLength);
+        break;
+
+    case ACPI_ALLOCATE_LOCAL_BUFFER:
+
+        /* Allocate a new buffer with local interface to allow tracking */
+
+        Buffer->Pointer = ACPI_ALLOCATE (RequiredLength);
+        break;
+
+    default:
+
+        /* Existing buffer: Validate the size of the buffer */
+
+        if (InputBufferLength < RequiredLength)
+        {
+            return (AE_BUFFER_OVERFLOW);
+        }
+        break;
+    }
+
+    /* Validate allocation from above or input buffer pointer */
+
+    if (!Buffer->Pointer)
+    {
+        return (AE_NO_MEMORY);
+    }
+
+    /* Have a valid buffer, clear it */
+
+    ACPI_MEMSET (Buffer->Pointer, 0, RequiredLength);
+    return (AE_OK);
+}
