*****************************************************************************/
/*
- * Copyright (C) 2000 - 2004, R. Byron Moore
+ * Copyright (C) 2000 - 2006, R. Byron Moore
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* POSSIBILITY OF SUCH DAMAGES.
*/
-
#include <acpi/acpi.h>
#include <acpi/acnamesp.h>
-
#define _COMPONENT ACPI_NAMESPACE
- ACPI_MODULE_NAME ("nswalk")
-
+ACPI_MODULE_NAME("nswalk")
/*******************************************************************************
*
*
* PARAMETERS: Type - Type of node to be searched for
* parent_node - Parent node whose children we are
- * getting
+ * getting
* child_node - Previous child that was found.
* The NEXT child will be returned
*
* within Scope is returned.
*
******************************************************************************/
-
-struct acpi_namespace_node *
-acpi_ns_get_next_node (
- acpi_object_type type,
- struct acpi_namespace_node *parent_node,
- struct acpi_namespace_node *child_node)
+struct acpi_namespace_node *acpi_ns_get_next_node(acpi_object_type type,
+ struct acpi_namespace_node
+ *parent_node,
+ struct acpi_namespace_node
+ *child_node)
{
- struct acpi_namespace_node *next_node = NULL;
-
-
- ACPI_FUNCTION_ENTRY ();
+ struct acpi_namespace_node *next_node = NULL;
+ ACPI_FUNCTION_ENTRY();
if (!child_node) {
+
/* It's really the parent's _scope_ that we want */
if (parent_node->child) {
else {
/* Start search at the NEXT node */
- next_node = acpi_ns_get_next_valid_node (child_node);
+ next_node = acpi_ns_get_next_valid_node(child_node);
}
/* If any type is OK, we are done */
if (type == ACPI_TYPE_ANY) {
+
/* next_node is NULL if we are at the end-of-list */
return (next_node);
/* Must search for the node -- but within this scope only */
while (next_node) {
+
/* If type matches, we are done */
if (next_node->type == type) {
/* Otherwise, move on to the next node */
- next_node = acpi_ns_get_next_valid_node (next_node);
+ next_node = acpi_ns_get_next_valid_node(next_node);
}
/* Not found */
return (NULL);
}
-
/*******************************************************************************
*
* FUNCTION: acpi_ns_walk_namespace
******************************************************************************/
acpi_status
-acpi_ns_walk_namespace (
- acpi_object_type type,
- acpi_handle start_node,
- u32 max_depth,
- u8 unlock_before_callback,
- acpi_walk_callback user_function,
- void *context,
- void **return_value)
+acpi_ns_walk_namespace(acpi_object_type type,
+ acpi_handle start_node,
+ u32 max_depth,
+ u8 unlock_before_callback,
+ acpi_walk_callback user_function,
+ void *context, void **return_value)
{
- acpi_status status;
- acpi_status mutex_status;
- struct acpi_namespace_node *child_node;
- struct acpi_namespace_node *parent_node;
- acpi_object_type child_type;
- u32 level;
-
-
- ACPI_FUNCTION_TRACE ("ns_walk_namespace");
+ acpi_status status;
+ acpi_status mutex_status;
+ struct acpi_namespace_node *child_node;
+ struct acpi_namespace_node *parent_node;
+ acpi_object_type child_type;
+ u32 level;
+ ACPI_FUNCTION_TRACE(ns_walk_namespace);
/* Special case for the namespace Root Node */
/* Null child means "get first node" */
parent_node = start_node;
- child_node = NULL;
- child_type = ACPI_TYPE_ANY;
- level = 1;
+ child_node = NULL;
+ child_type = ACPI_TYPE_ANY;
+ level = 1;
/*
* Traverse the tree of nodes until we bubble back up to where we
* bubbled up to (and passed) the original parent handle (start_entry)
*/
while (level > 0) {
+
/* Get the next node in this scope. Null if not found */
status = AE_OK;
- child_node = acpi_ns_get_next_node (ACPI_TYPE_ANY, parent_node, child_node);
+ child_node =
+ acpi_ns_get_next_node(ACPI_TYPE_ANY, parent_node,
+ child_node);
if (child_node) {
/*
* Found node, Get the type if we are not
* callback function
*/
if (unlock_before_callback) {
- mutex_status = acpi_ut_release_mutex (ACPI_MTX_NAMESPACE);
- if (ACPI_FAILURE (mutex_status)) {
- return_ACPI_STATUS (mutex_status);
+ mutex_status =
+ acpi_ut_release_mutex
+ (ACPI_MTX_NAMESPACE);
+ if (ACPI_FAILURE(mutex_status)) {
+ return_ACPI_STATUS
+ (mutex_status);
}
}
- status = user_function (child_node, level,
- context, return_value);
+ status = user_function(child_node, level,
+ context, return_value);
if (unlock_before_callback) {
- mutex_status = acpi_ut_acquire_mutex (ACPI_MTX_NAMESPACE);
- if (ACPI_FAILURE (mutex_status)) {
- return_ACPI_STATUS (mutex_status);
+ mutex_status =
+ acpi_ut_acquire_mutex
+ (ACPI_MTX_NAMESPACE);
+ if (ACPI_FAILURE(mutex_status)) {
+ return_ACPI_STATUS
+ (mutex_status);
}
}
/* Exit now, with OK status */
- return_ACPI_STATUS (AE_OK);
+ return_ACPI_STATUS(AE_OK);
default:
/* All others are valid exceptions */
- return_ACPI_STATUS (status);
+ return_ACPI_STATUS(status);
}
}
* maximum depth has been reached.
*/
if ((level < max_depth) && (status != AE_CTRL_DEPTH)) {
- if (acpi_ns_get_next_node (ACPI_TYPE_ANY, child_node, NULL)) {
+ if (acpi_ns_get_next_node
+ (ACPI_TYPE_ANY, child_node, NULL)) {
/*
* There is at least one child of this
* node, visit the onde
*/
level++;
- parent_node = child_node;
- child_node = NULL;
+ parent_node = child_node;
+ child_node = NULL;
}
}
- }
- else {
+ } else {
/*
* No more children of this node (acpi_ns_get_next_node
* failed), go back upwards in the namespace tree to
*/
level--;
child_node = parent_node;
- parent_node = acpi_ns_get_parent_node (parent_node);
+ parent_node = acpi_ns_get_parent_node(parent_node);
}
}
/* Complete walk, not terminated by user function */
- return_ACPI_STATUS (AE_OK);
+ return_ACPI_STATUS(AE_OK);
}
-
-
git://git.onelab.eu / linux-2.6.git / blobdiff