Release 4.11 drivers/acpi/acpica/nsxfobj.c
/*******************************************************************************
*
* Module Name: nsxfobj - Public interfaces to the ACPI subsystem
* ACPI Object oriented interfaces
*
******************************************************************************/
/*
* Copyright (C) 2000 - 2017, 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 EXPORT_ACPI_INTERFACES
#include <acpi/acpi.h>
#include "accommon.h"
#include "acnamesp.h"
#define _COMPONENT ACPI_NAMESPACE
ACPI_MODULE_NAME("nsxfobj")
/*******************************************************************************
*
* FUNCTION: acpi_get_type
*
* PARAMETERS: handle - Handle of object whose type is desired
* ret_type - Where the type will be placed
*
* RETURN: Status
*
* DESCRIPTION: This routine returns the type associatd with a particular handle
*
******************************************************************************/
acpi_status acpi_get_type(acpi_handle handle, acpi_object_type *ret_type)
{
struct acpi_namespace_node *node;
acpi_status status;
/* Parameter Validation */
if (!ret_type) {
return (AE_BAD_PARAMETER);
}
/* Special case for the predefined Root Node (return type ANY) */
if (handle == ACPI_ROOT_OBJECT) {
*ret_type = ACPI_TYPE_ANY;
return (AE_OK);
}
status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
if (ACPI_FAILURE(status)) {
return (status);
}
/* Convert and validate the handle */
node = acpi_ns_validate_handle(handle);
if (!node) {
(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
return (AE_BAD_PARAMETER);
}
*ret_type = node->type;
status = acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
return (status);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Andy Grover | 117 | 97.50% | 3 | 50.00% |
| Robert Moore | 2 | 1.67% | 2 | 33.33% |
| Len Brown | 1 | 0.83% | 1 | 16.67% |
| Total | 120 | 100.00% | 6 | 100.00% |
ACPI_EXPORT_SYMBOL(acpi_get_type)
/*******************************************************************************
*
* FUNCTION: acpi_get_parent
*
* PARAMETERS: handle - Handle of object whose parent is desired
* ret_handle - Where the parent handle will be placed
*
* RETURN: Status
*
* DESCRIPTION: Returns a handle to the parent of the object represented by
* Handle.
*
******************************************************************************/
acpi_status acpi_get_parent(acpi_handle handle, acpi_handle *ret_handle)
{
struct acpi_namespace_node *node;
struct acpi_namespace_node *parent_node;
acpi_status status;
if (!ret_handle) {
return (AE_BAD_PARAMETER);
}
/* Special case for the predefined Root Node (no parent) */
if (handle == ACPI_ROOT_OBJECT) {
return (AE_NULL_ENTRY);
}
status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
if (ACPI_FAILURE(status)) {
return (status);
}
/* Convert and validate the handle */
node = acpi_ns_validate_handle(handle);
if (!node) {
status = AE_BAD_PARAMETER;
goto unlock_and_exit;
}
/* Get the parent entry */
parent_node = node->parent;
*ret_handle = ACPI_CAST_PTR(acpi_handle, parent_node);
/* Return exception if parent is null */
if (!parent_node) {
status = AE_NULL_ENTRY;
}
unlock_and_exit:
(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
return (status);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Andy Grover | 117 | 84.78% | 3 | 37.50% |
| Alexander Chiang | 13 | 9.42% | 1 | 12.50% |
| Robert Moore | 4 | 2.90% | 1 | 12.50% |
| Alexey Y. Starikovskiy | 2 | 1.45% | 1 | 12.50% |
| Steven Cole | 1 | 0.72% | 1 | 12.50% |
| Len Brown | 1 | 0.72% | 1 | 12.50% |
| Total | 138 | 100.00% | 8 | 100.00% |
ACPI_EXPORT_SYMBOL(acpi_get_parent)
/*******************************************************************************
*
* FUNCTION: acpi_get_next_object
*
* PARAMETERS: type - Type of object to be searched for
* parent - Parent object whose children we are getting
* last_child - Previous child that was found.
* The NEXT child will be returned
* ret_handle - Where handle to the next object is placed
*
* RETURN: Status
*
* DESCRIPTION: Return the next peer object within the namespace. If Handle is
* valid, Scope is ignored. Otherwise, the first object within
* Scope is returned.
*
******************************************************************************/
acpi_status
acpi_get_next_object(acpi_object_type type,
acpi_handle parent,
acpi_handle child, acpi_handle *ret_handle)
{
acpi_status status;
struct acpi_namespace_node *node;
struct acpi_namespace_node *parent_node = NULL;
struct acpi_namespace_node *child_node = NULL;
/* Parameter validation */
if (type > ACPI_TYPE_EXTERNAL_MAX) {
return (AE_BAD_PARAMETER);
}
status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
if (ACPI_FAILURE(status)) {
return (status);
}
/* If null handle, use the parent */
if (!child) {
/* Start search at the beginning of the specified scope */
parent_node = acpi_ns_validate_handle(parent);
if (!parent_node) {
status = AE_BAD_PARAMETER;
goto unlock_and_exit;
}
} else {
/* Non-null handle, ignore the parent */
/* Convert and validate the handle */
child_node = acpi_ns_validate_handle(child);
if (!child_node) {
status = AE_BAD_PARAMETER;
goto unlock_and_exit;
}
}
/* Internal function does the real work */
node = acpi_ns_get_next_node_typed(type, parent_node, child_node);
if (!node) {
status = AE_NOT_FOUND;
goto unlock_and_exit;
}
if (ret_handle) {
*ret_handle = ACPI_CAST_PTR(acpi_handle, node);
}
unlock_and_exit:
(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
return (status);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Andy Grover | 182 | 96.81% | 4 | 66.67% |
| Robert Moore | 6 | 3.19% | 2 | 33.33% |
| Total | 188 | 100.00% | 6 | 100.00% |
ACPI_EXPORT_SYMBOL(acpi_get_next_object)
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Andy Grover | 418 | 86.54% | 5 | 20.83% |
| Robert Moore | 24 | 4.97% | 8 | 33.33% |
| Alexander Chiang | 13 | 2.69% | 1 | 4.17% |
| Len Brown | 10 | 2.07% | 3 | 12.50% |
| Linus Torvalds (pre-git) | 8 | 1.66% | 1 | 4.17% |
| Lv Zheng | 3 | 0.62% | 1 | 4.17% |
| Alexey Y. Starikovskiy | 2 | 0.41% | 1 | 4.17% |
| Paul Gortmaker | 2 | 0.41% | 1 | 4.17% |
| Steven Cole | 1 | 0.21% | 1 | 4.17% |
| Linus Torvalds | 1 | 0.21% | 1 | 4.17% |
| Patrick Mochel | 1 | 0.21% | 1 | 4.17% |
| Total | 483 | 100.00% | 24 | 100.00% |
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