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nsload.c revision 1.1.1.2.4.2
      1  1.1.1.2.4.2  rmind /******************************************************************************
      2  1.1.1.2.4.2  rmind  *
      3  1.1.1.2.4.2  rmind  * Module Name: nsload - namespace loading/expanding/contracting procedures
      4  1.1.1.2.4.2  rmind  *
      5  1.1.1.2.4.2  rmind  *****************************************************************************/
      6  1.1.1.2.4.2  rmind 
      7  1.1.1.2.4.2  rmind /*
      8  1.1.1.2.4.2  rmind  * Copyright (C) 2000 - 2011, Intel Corp.
      9  1.1.1.2.4.2  rmind  * All rights reserved.
     10  1.1.1.2.4.2  rmind  *
     11  1.1.1.2.4.2  rmind  * Redistribution and use in source and binary forms, with or without
     12  1.1.1.2.4.2  rmind  * modification, are permitted provided that the following conditions
     13  1.1.1.2.4.2  rmind  * are met:
     14  1.1.1.2.4.2  rmind  * 1. Redistributions of source code must retain the above copyright
     15  1.1.1.2.4.2  rmind  *    notice, this list of conditions, and the following disclaimer,
     16  1.1.1.2.4.2  rmind  *    without modification.
     17  1.1.1.2.4.2  rmind  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
     18  1.1.1.2.4.2  rmind  *    substantially similar to the "NO WARRANTY" disclaimer below
     19  1.1.1.2.4.2  rmind  *    ("Disclaimer") and any redistribution must be conditioned upon
     20  1.1.1.2.4.2  rmind  *    including a substantially similar Disclaimer requirement for further
     21  1.1.1.2.4.2  rmind  *    binary redistribution.
     22  1.1.1.2.4.2  rmind  * 3. Neither the names of the above-listed copyright holders nor the names
     23  1.1.1.2.4.2  rmind  *    of any contributors may be used to endorse or promote products derived
     24  1.1.1.2.4.2  rmind  *    from this software without specific prior written permission.
     25  1.1.1.2.4.2  rmind  *
     26  1.1.1.2.4.2  rmind  * Alternatively, this software may be distributed under the terms of the
     27  1.1.1.2.4.2  rmind  * GNU General Public License ("GPL") version 2 as published by the Free
     28  1.1.1.2.4.2  rmind  * Software Foundation.
     29  1.1.1.2.4.2  rmind  *
     30  1.1.1.2.4.2  rmind  * NO WARRANTY
     31  1.1.1.2.4.2  rmind  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     32  1.1.1.2.4.2  rmind  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     33  1.1.1.2.4.2  rmind  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
     34  1.1.1.2.4.2  rmind  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     35  1.1.1.2.4.2  rmind  * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     36  1.1.1.2.4.2  rmind  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     37  1.1.1.2.4.2  rmind  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     38  1.1.1.2.4.2  rmind  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
     39  1.1.1.2.4.2  rmind  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
     40  1.1.1.2.4.2  rmind  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     41  1.1.1.2.4.2  rmind  * POSSIBILITY OF SUCH DAMAGES.
     42  1.1.1.2.4.2  rmind  */
     43  1.1.1.2.4.2  rmind 
     44  1.1.1.2.4.2  rmind #define __NSLOAD_C__
     45  1.1.1.2.4.2  rmind 
     46  1.1.1.2.4.2  rmind #include "acpi.h"
     47  1.1.1.2.4.2  rmind #include "accommon.h"
     48  1.1.1.2.4.2  rmind #include "acnamesp.h"
     49  1.1.1.2.4.2  rmind #include "acdispat.h"
     50  1.1.1.2.4.2  rmind #include "actables.h"
     51  1.1.1.2.4.2  rmind 
     52  1.1.1.2.4.2  rmind 
     53  1.1.1.2.4.2  rmind #define _COMPONENT          ACPI_NAMESPACE
     54  1.1.1.2.4.2  rmind         ACPI_MODULE_NAME    ("nsload")
     55  1.1.1.2.4.2  rmind 
     56  1.1.1.2.4.2  rmind /* Local prototypes */
     57  1.1.1.2.4.2  rmind 
     58  1.1.1.2.4.2  rmind #ifdef ACPI_FUTURE_IMPLEMENTATION
     59  1.1.1.2.4.2  rmind ACPI_STATUS
     60  1.1.1.2.4.2  rmind AcpiNsUnloadNamespace (
     61  1.1.1.2.4.2  rmind     ACPI_HANDLE             Handle);
     62  1.1.1.2.4.2  rmind 
     63  1.1.1.2.4.2  rmind static ACPI_STATUS
     64  1.1.1.2.4.2  rmind AcpiNsDeleteSubtree (
     65  1.1.1.2.4.2  rmind     ACPI_HANDLE             StartHandle);
     66  1.1.1.2.4.2  rmind #endif
     67  1.1.1.2.4.2  rmind 
     68  1.1.1.2.4.2  rmind 
     69  1.1.1.2.4.2  rmind #ifndef ACPI_NO_METHOD_EXECUTION
     70  1.1.1.2.4.2  rmind /*******************************************************************************
     71  1.1.1.2.4.2  rmind  *
     72  1.1.1.2.4.2  rmind  * FUNCTION:    AcpiNsLoadTable
     73  1.1.1.2.4.2  rmind  *
     74  1.1.1.2.4.2  rmind  * PARAMETERS:  TableIndex      - Index for table to be loaded
     75  1.1.1.2.4.2  rmind  *              Node            - Owning NS node
     76  1.1.1.2.4.2  rmind  *
     77  1.1.1.2.4.2  rmind  * RETURN:      Status
     78  1.1.1.2.4.2  rmind  *
     79  1.1.1.2.4.2  rmind  * DESCRIPTION: Load one ACPI table into the namespace
     80  1.1.1.2.4.2  rmind  *
     81  1.1.1.2.4.2  rmind  ******************************************************************************/
     82  1.1.1.2.4.2  rmind 
     83  1.1.1.2.4.2  rmind ACPI_STATUS
     84  1.1.1.2.4.2  rmind AcpiNsLoadTable (
     85  1.1.1.2.4.2  rmind     UINT32                  TableIndex,
     86  1.1.1.2.4.2  rmind     ACPI_NAMESPACE_NODE     *Node)
     87  1.1.1.2.4.2  rmind {
     88  1.1.1.2.4.2  rmind     ACPI_STATUS             Status;
     89  1.1.1.2.4.2  rmind 
     90  1.1.1.2.4.2  rmind 
     91  1.1.1.2.4.2  rmind     ACPI_FUNCTION_TRACE (NsLoadTable);
     92  1.1.1.2.4.2  rmind 
     93  1.1.1.2.4.2  rmind 
     94  1.1.1.2.4.2  rmind     /*
     95  1.1.1.2.4.2  rmind      * Parse the table and load the namespace with all named
     96  1.1.1.2.4.2  rmind      * objects found within.  Control methods are NOT parsed
     97  1.1.1.2.4.2  rmind      * at this time.  In fact, the control methods cannot be
     98  1.1.1.2.4.2  rmind      * parsed until the entire namespace is loaded, because
     99  1.1.1.2.4.2  rmind      * if a control method makes a forward reference (call)
    100  1.1.1.2.4.2  rmind      * to another control method, we can't continue parsing
    101  1.1.1.2.4.2  rmind      * because we don't know how many arguments to parse next!
    102  1.1.1.2.4.2  rmind      */
    103  1.1.1.2.4.2  rmind     Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
    104  1.1.1.2.4.2  rmind     if (ACPI_FAILURE (Status))
    105  1.1.1.2.4.2  rmind     {
    106  1.1.1.2.4.2  rmind         return_ACPI_STATUS (Status);
    107  1.1.1.2.4.2  rmind     }
    108  1.1.1.2.4.2  rmind 
    109  1.1.1.2.4.2  rmind     /* If table already loaded into namespace, just return */
    110  1.1.1.2.4.2  rmind 
    111  1.1.1.2.4.2  rmind     if (AcpiTbIsTableLoaded (TableIndex))
    112  1.1.1.2.4.2  rmind     {
    113  1.1.1.2.4.2  rmind         Status = AE_ALREADY_EXISTS;
    114  1.1.1.2.4.2  rmind         goto Unlock;
    115  1.1.1.2.4.2  rmind     }
    116  1.1.1.2.4.2  rmind 
    117  1.1.1.2.4.2  rmind     ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
    118  1.1.1.2.4.2  rmind         "**** Loading table into namespace ****\n"));
    119  1.1.1.2.4.2  rmind 
    120  1.1.1.2.4.2  rmind     Status = AcpiTbAllocateOwnerId (TableIndex);
    121  1.1.1.2.4.2  rmind     if (ACPI_FAILURE (Status))
    122  1.1.1.2.4.2  rmind     {
    123  1.1.1.2.4.2  rmind         goto Unlock;
    124  1.1.1.2.4.2  rmind     }
    125  1.1.1.2.4.2  rmind 
    126  1.1.1.2.4.2  rmind     Status = AcpiNsParseTable (TableIndex, Node);
    127  1.1.1.2.4.2  rmind     if (ACPI_SUCCESS (Status))
    128  1.1.1.2.4.2  rmind     {
    129  1.1.1.2.4.2  rmind         AcpiTbSetTableLoadedFlag (TableIndex, TRUE);
    130  1.1.1.2.4.2  rmind     }
    131  1.1.1.2.4.2  rmind     else
    132  1.1.1.2.4.2  rmind     {
    133  1.1.1.2.4.2  rmind         (void) AcpiTbReleaseOwnerId (TableIndex);
    134  1.1.1.2.4.2  rmind     }
    135  1.1.1.2.4.2  rmind 
    136  1.1.1.2.4.2  rmind Unlock:
    137  1.1.1.2.4.2  rmind     (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
    138  1.1.1.2.4.2  rmind 
    139  1.1.1.2.4.2  rmind     if (ACPI_FAILURE (Status))
    140  1.1.1.2.4.2  rmind     {
    141  1.1.1.2.4.2  rmind         return_ACPI_STATUS (Status);
    142  1.1.1.2.4.2  rmind     }
    143  1.1.1.2.4.2  rmind 
    144  1.1.1.2.4.2  rmind     /*
    145  1.1.1.2.4.2  rmind      * Now we can parse the control methods.  We always parse
    146  1.1.1.2.4.2  rmind      * them here for a sanity check, and if configured for
    147  1.1.1.2.4.2  rmind      * just-in-time parsing, we delete the control method
    148  1.1.1.2.4.2  rmind      * parse trees.
    149  1.1.1.2.4.2  rmind      */
    150  1.1.1.2.4.2  rmind     ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
    151  1.1.1.2.4.2  rmind         "**** Begin Table Method Parsing and Object Initialization\n"));
    152  1.1.1.2.4.2  rmind 
    153  1.1.1.2.4.2  rmind     Status = AcpiDsInitializeObjects (TableIndex, Node);
    154  1.1.1.2.4.2  rmind 
    155  1.1.1.2.4.2  rmind     ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
    156  1.1.1.2.4.2  rmind         "**** Completed Table Method Parsing and Object Initialization\n"));
    157  1.1.1.2.4.2  rmind 
    158  1.1.1.2.4.2  rmind     return_ACPI_STATUS (Status);
    159  1.1.1.2.4.2  rmind }
    160  1.1.1.2.4.2  rmind 
    161  1.1.1.2.4.2  rmind 
    162  1.1.1.2.4.2  rmind #ifdef ACPI_OBSOLETE_FUNCTIONS
    163  1.1.1.2.4.2  rmind /*******************************************************************************
    164  1.1.1.2.4.2  rmind  *
    165  1.1.1.2.4.2  rmind  * FUNCTION:    AcpiLoadNamespace
    166  1.1.1.2.4.2  rmind  *
    167  1.1.1.2.4.2  rmind  * PARAMETERS:  None
    168  1.1.1.2.4.2  rmind  *
    169  1.1.1.2.4.2  rmind  * RETURN:      Status
    170  1.1.1.2.4.2  rmind  *
    171  1.1.1.2.4.2  rmind  * DESCRIPTION: Load the name space from what ever is pointed to by DSDT.
    172  1.1.1.2.4.2  rmind  *              (DSDT points to either the BIOS or a buffer.)
    173  1.1.1.2.4.2  rmind  *
    174  1.1.1.2.4.2  rmind  ******************************************************************************/
    175  1.1.1.2.4.2  rmind 
    176  1.1.1.2.4.2  rmind ACPI_STATUS
    177  1.1.1.2.4.2  rmind AcpiNsLoadNamespace (
    178  1.1.1.2.4.2  rmind     void)
    179  1.1.1.2.4.2  rmind {
    180  1.1.1.2.4.2  rmind     ACPI_STATUS             Status;
    181  1.1.1.2.4.2  rmind 
    182  1.1.1.2.4.2  rmind 
    183  1.1.1.2.4.2  rmind     ACPI_FUNCTION_TRACE (AcpiLoadNameSpace);
    184  1.1.1.2.4.2  rmind 
    185  1.1.1.2.4.2  rmind 
    186  1.1.1.2.4.2  rmind     /* There must be at least a DSDT installed */
    187  1.1.1.2.4.2  rmind 
    188  1.1.1.2.4.2  rmind     if (AcpiGbl_DSDT == NULL)
    189  1.1.1.2.4.2  rmind     {
    190  1.1.1.2.4.2  rmind         ACPI_ERROR ((AE_INFO, "DSDT is not in memory"));
    191  1.1.1.2.4.2  rmind         return_ACPI_STATUS (AE_NO_ACPI_TABLES);
    192  1.1.1.2.4.2  rmind     }
    193  1.1.1.2.4.2  rmind 
    194  1.1.1.2.4.2  rmind     /*
    195  1.1.1.2.4.2  rmind      * Load the namespace.  The DSDT is required,
    196  1.1.1.2.4.2  rmind      * but the SSDT and PSDT tables are optional.
    197  1.1.1.2.4.2  rmind      */
    198  1.1.1.2.4.2  rmind     Status = AcpiNsLoadTableByType (ACPI_TABLE_ID_DSDT);
    199  1.1.1.2.4.2  rmind     if (ACPI_FAILURE (Status))
    200  1.1.1.2.4.2  rmind     {
    201  1.1.1.2.4.2  rmind         return_ACPI_STATUS (Status);
    202  1.1.1.2.4.2  rmind     }
    203  1.1.1.2.4.2  rmind 
    204  1.1.1.2.4.2  rmind     /* Ignore exceptions from these */
    205  1.1.1.2.4.2  rmind 
    206  1.1.1.2.4.2  rmind     (void) AcpiNsLoadTableByType (ACPI_TABLE_ID_SSDT);
    207  1.1.1.2.4.2  rmind     (void) AcpiNsLoadTableByType (ACPI_TABLE_ID_PSDT);
    208  1.1.1.2.4.2  rmind 
    209  1.1.1.2.4.2  rmind     ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT,
    210  1.1.1.2.4.2  rmind         "ACPI Namespace successfully loaded at root %p\n",
    211  1.1.1.2.4.2  rmind         AcpiGbl_RootNode));
    212  1.1.1.2.4.2  rmind 
    213  1.1.1.2.4.2  rmind     return_ACPI_STATUS (Status);
    214  1.1.1.2.4.2  rmind }
    215  1.1.1.2.4.2  rmind #endif
    216  1.1.1.2.4.2  rmind 
    217  1.1.1.2.4.2  rmind #ifdef ACPI_FUTURE_IMPLEMENTATION
    218  1.1.1.2.4.2  rmind /*******************************************************************************
    219  1.1.1.2.4.2  rmind  *
    220  1.1.1.2.4.2  rmind  * FUNCTION:    AcpiNsDeleteSubtree
    221  1.1.1.2.4.2  rmind  *
    222  1.1.1.2.4.2  rmind  * PARAMETERS:  StartHandle         - Handle in namespace where search begins
    223  1.1.1.2.4.2  rmind  *
    224  1.1.1.2.4.2  rmind  * RETURNS      Status
    225  1.1.1.2.4.2  rmind  *
    226  1.1.1.2.4.2  rmind  * DESCRIPTION: Walks the namespace starting at the given handle and deletes
    227  1.1.1.2.4.2  rmind  *              all objects, entries, and scopes in the entire subtree.
    228  1.1.1.2.4.2  rmind  *
    229  1.1.1.2.4.2  rmind  *              Namespace/Interpreter should be locked or the subsystem should
    230  1.1.1.2.4.2  rmind  *              be in shutdown before this routine is called.
    231  1.1.1.2.4.2  rmind  *
    232  1.1.1.2.4.2  rmind  ******************************************************************************/
    233  1.1.1.2.4.2  rmind 
    234  1.1.1.2.4.2  rmind static ACPI_STATUS
    235  1.1.1.2.4.2  rmind AcpiNsDeleteSubtree (
    236  1.1.1.2.4.2  rmind     ACPI_HANDLE             StartHandle)
    237  1.1.1.2.4.2  rmind {
    238  1.1.1.2.4.2  rmind     ACPI_STATUS             Status;
    239  1.1.1.2.4.2  rmind     ACPI_HANDLE             ChildHandle;
    240  1.1.1.2.4.2  rmind     ACPI_HANDLE             ParentHandle;
    241  1.1.1.2.4.2  rmind     ACPI_HANDLE             NextChildHandle;
    242  1.1.1.2.4.2  rmind     ACPI_HANDLE             Dummy;
    243  1.1.1.2.4.2  rmind     UINT32                  Level;
    244  1.1.1.2.4.2  rmind 
    245  1.1.1.2.4.2  rmind 
    246  1.1.1.2.4.2  rmind     ACPI_FUNCTION_TRACE (NsDeleteSubtree);
    247  1.1.1.2.4.2  rmind 
    248  1.1.1.2.4.2  rmind 
    249  1.1.1.2.4.2  rmind     ParentHandle = StartHandle;
    250  1.1.1.2.4.2  rmind     ChildHandle  = NULL;
    251  1.1.1.2.4.2  rmind     Level        = 1;
    252  1.1.1.2.4.2  rmind 
    253  1.1.1.2.4.2  rmind     /*
    254  1.1.1.2.4.2  rmind      * Traverse the tree of objects until we bubble back up
    255  1.1.1.2.4.2  rmind      * to where we started.
    256  1.1.1.2.4.2  rmind      */
    257  1.1.1.2.4.2  rmind     while (Level > 0)
    258  1.1.1.2.4.2  rmind     {
    259  1.1.1.2.4.2  rmind         /* Attempt to get the next object in this scope */
    260  1.1.1.2.4.2  rmind 
    261  1.1.1.2.4.2  rmind         Status = AcpiGetNextObject (ACPI_TYPE_ANY, ParentHandle,
    262  1.1.1.2.4.2  rmind                                     ChildHandle, &NextChildHandle);
    263  1.1.1.2.4.2  rmind 
    264  1.1.1.2.4.2  rmind         ChildHandle = NextChildHandle;
    265  1.1.1.2.4.2  rmind 
    266  1.1.1.2.4.2  rmind         /* Did we get a new object? */
    267  1.1.1.2.4.2  rmind 
    268  1.1.1.2.4.2  rmind         if (ACPI_SUCCESS (Status))
    269  1.1.1.2.4.2  rmind         {
    270  1.1.1.2.4.2  rmind             /* Check if this object has any children */
    271  1.1.1.2.4.2  rmind 
    272  1.1.1.2.4.2  rmind             if (ACPI_SUCCESS (AcpiGetNextObject (ACPI_TYPE_ANY, ChildHandle,
    273  1.1.1.2.4.2  rmind                                     NULL, &Dummy)))
    274  1.1.1.2.4.2  rmind             {
    275  1.1.1.2.4.2  rmind                 /*
    276  1.1.1.2.4.2  rmind                  * There is at least one child of this object,
    277  1.1.1.2.4.2  rmind                  * visit the object
    278  1.1.1.2.4.2  rmind                  */
    279  1.1.1.2.4.2  rmind                 Level++;
    280  1.1.1.2.4.2  rmind                 ParentHandle = ChildHandle;
    281  1.1.1.2.4.2  rmind                 ChildHandle  = NULL;
    282  1.1.1.2.4.2  rmind             }
    283  1.1.1.2.4.2  rmind         }
    284  1.1.1.2.4.2  rmind         else
    285  1.1.1.2.4.2  rmind         {
    286  1.1.1.2.4.2  rmind             /*
    287  1.1.1.2.4.2  rmind              * No more children in this object, go back up to
    288  1.1.1.2.4.2  rmind              * the object's parent
    289  1.1.1.2.4.2  rmind              */
    290  1.1.1.2.4.2  rmind             Level--;
    291  1.1.1.2.4.2  rmind 
    292  1.1.1.2.4.2  rmind             /* Delete all children now */
    293  1.1.1.2.4.2  rmind 
    294  1.1.1.2.4.2  rmind             AcpiNsDeleteChildren (ChildHandle);
    295  1.1.1.2.4.2  rmind 
    296  1.1.1.2.4.2  rmind             ChildHandle = ParentHandle;
    297  1.1.1.2.4.2  rmind             Status = AcpiGetParent (ParentHandle, &ParentHandle);
    298  1.1.1.2.4.2  rmind             if (ACPI_FAILURE (Status))
    299  1.1.1.2.4.2  rmind             {
    300  1.1.1.2.4.2  rmind                 return_ACPI_STATUS (Status);
    301  1.1.1.2.4.2  rmind             }
    302  1.1.1.2.4.2  rmind         }
    303  1.1.1.2.4.2  rmind     }
    304  1.1.1.2.4.2  rmind 
    305  1.1.1.2.4.2  rmind     /* Now delete the starting object, and we are done */
    306  1.1.1.2.4.2  rmind 
    307  1.1.1.2.4.2  rmind     AcpiNsRemoveNode (ChildHandle);
    308  1.1.1.2.4.2  rmind     return_ACPI_STATUS (AE_OK);
    309  1.1.1.2.4.2  rmind }
    310  1.1.1.2.4.2  rmind 
    311  1.1.1.2.4.2  rmind 
    312  1.1.1.2.4.2  rmind /*******************************************************************************
    313  1.1.1.2.4.2  rmind  *
    314  1.1.1.2.4.2  rmind  *  FUNCTION:       AcpiNsUnloadNameSpace
    315  1.1.1.2.4.2  rmind  *
    316  1.1.1.2.4.2  rmind  *  PARAMETERS:     Handle          - Root of namespace subtree to be deleted
    317  1.1.1.2.4.2  rmind  *
    318  1.1.1.2.4.2  rmind  *  RETURN:         Status
    319  1.1.1.2.4.2  rmind  *
    320  1.1.1.2.4.2  rmind  *  DESCRIPTION:    Shrinks the namespace, typically in response to an undocking
    321  1.1.1.2.4.2  rmind  *                  event.  Deletes an entire subtree starting from (and
    322  1.1.1.2.4.2  rmind  *                  including) the given handle.
    323  1.1.1.2.4.2  rmind  *
    324  1.1.1.2.4.2  rmind  ******************************************************************************/
    325  1.1.1.2.4.2  rmind 
    326  1.1.1.2.4.2  rmind ACPI_STATUS
    327  1.1.1.2.4.2  rmind AcpiNsUnloadNamespace (
    328  1.1.1.2.4.2  rmind     ACPI_HANDLE             Handle)
    329  1.1.1.2.4.2  rmind {
    330  1.1.1.2.4.2  rmind     ACPI_STATUS             Status;
    331  1.1.1.2.4.2  rmind 
    332  1.1.1.2.4.2  rmind 
    333  1.1.1.2.4.2  rmind     ACPI_FUNCTION_TRACE (NsUnloadNameSpace);
    334  1.1.1.2.4.2  rmind 
    335  1.1.1.2.4.2  rmind 
    336  1.1.1.2.4.2  rmind     /* Parameter validation */
    337  1.1.1.2.4.2  rmind 
    338  1.1.1.2.4.2  rmind     if (!AcpiGbl_RootNode)
    339  1.1.1.2.4.2  rmind     {
    340  1.1.1.2.4.2  rmind         return_ACPI_STATUS (AE_NO_NAMESPACE);
    341  1.1.1.2.4.2  rmind     }
    342  1.1.1.2.4.2  rmind 
    343  1.1.1.2.4.2  rmind     if (!Handle)
    344  1.1.1.2.4.2  rmind     {
    345  1.1.1.2.4.2  rmind         return_ACPI_STATUS (AE_BAD_PARAMETER);
    346  1.1.1.2.4.2  rmind     }
    347  1.1.1.2.4.2  rmind 
    348  1.1.1.2.4.2  rmind     /* This function does the real work */
    349  1.1.1.2.4.2  rmind 
    350  1.1.1.2.4.2  rmind     Status = AcpiNsDeleteSubtree (Handle);
    351  1.1.1.2.4.2  rmind 
    352  1.1.1.2.4.2  rmind     return_ACPI_STATUS (Status);
    353  1.1.1.2.4.2  rmind }
    354  1.1.1.2.4.2  rmind #endif
    355  1.1.1.2.4.2  rmind #endif
    356  1.1.1.2.4.2  rmind 
    357