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ACPICA: Simplify and optimize NsGetNextNode function 

Reduced parameter count and reduced code for this frequently
used function.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Bob Moore 2009-05-21 10:27:51 +08:00 committed by Len Brown
parent 474caffdc1
commit 8c725bf937
4 changed files with 72 additions and 32 deletions
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13
drivers/acpi/acpica/acnamesp.h
View File

@ -99,10 +99,19 @@ acpi_ns_walk_namespace(acpi_object_type type,
acpi_walk_callback user_function,
void *context, void **return_value);
struct acpi_namespace_node *acpi_ns_get_next_node(acpi_object_type type, struct acpi_namespace_node
*parent, struct acpi_namespace_node
struct acpi_namespace_node *acpi_ns_get_next_node(struct acpi_namespace_node
*parent,
struct acpi_namespace_node
*child);
struct acpi_namespace_node *acpi_ns_get_next_node_typed(acpi_object_type type,
struct
acpi_namespace_node
*parent,
struct
acpi_namespace_node
*child);
/*
* nsparse - table parsing
*/

14
drivers/acpi/acpica/nsalloc.c
View File

@ -334,9 +334,7 @@ void acpi_ns_delete_namespace_subtree(struct acpi_namespace_node *parent_node)
/* Get the next node in this scope (NULL if none) */
child_node =
acpi_ns_get_next_node(ACPI_TYPE_ANY, parent_node,
child_node);
child_node = acpi_ns_get_next_node(parent_node, child_node);
if (child_node) {
/* Found a child node - detach any attached object */
@ -345,8 +343,7 @@ void acpi_ns_delete_namespace_subtree(struct acpi_namespace_node *parent_node)
/* Check if this node has any children */
if (acpi_ns_get_next_node
(ACPI_TYPE_ANY, child_node, NULL)) {
if (child_node->child) {
/*
* There is at least one child of this node,
* visit the node
@ -432,9 +429,7 @@ void acpi_ns_delete_namespace_by_owner(acpi_owner_id owner_id)
* Get the next child of this parent node. When child_node is NULL,
* the first child of the parent is returned
*/
child_node =
acpi_ns_get_next_node(ACPI_TYPE_ANY, parent_node,
child_node);
child_node = acpi_ns_get_next_node(parent_node, child_node);
if (deletion_node) {
acpi_ns_delete_children(deletion_node);
@ -452,8 +447,7 @@ void acpi_ns_delete_namespace_by_owner(acpi_owner_id owner_id)
/* Check if this node has any children */
if (acpi_ns_get_next_node
(ACPI_TYPE_ANY, child_node, NULL)) {
if (child_node->child) {
/*
* There is at least one child of this node,
* visit the node

75
drivers/acpi/acpica/nswalk.c
View File

@ -52,6 +52,51 @@ ACPI_MODULE_NAME("nswalk")
*
* FUNCTION: acpi_ns_get_next_node
*
* PARAMETERS: parent_node - Parent node whose children we are
* getting
* child_node - Previous child that was found.
* The NEXT child will be returned
*
* RETURN: struct acpi_namespace_node - Pointer to the NEXT child or NULL if
* none is found.
*
* DESCRIPTION: Return the next peer node within the namespace. If Handle
* is valid, Scope is ignored. Otherwise, the first node
* within Scope is returned.
*
******************************************************************************/
struct acpi_namespace_node *acpi_ns_get_next_node(struct acpi_namespace_node
*parent_node,
struct acpi_namespace_node
*child_node)
{
ACPI_FUNCTION_ENTRY();
if (!child_node) {
/* It's really the parent's _scope_ that we want */
return parent_node->child;
}
/*
* Get the next node.
*
* If we are at the end of this peer list, return NULL
*/
if (child_node->flags & ANOBJ_END_OF_PEER_LIST) {
return NULL;
}
/* Otherwise just return the next peer */
return child_node->peer;
}
/*******************************************************************************
*
* FUNCTION: acpi_ns_get_next_node_typed
*
* PARAMETERS: Type - Type of node to be searched for
* parent_node - Parent node whose children we are
* getting
@ -66,26 +111,21 @@ ACPI_MODULE_NAME("nswalk")
* 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_typed(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();
if (!child_node) {
next_node = acpi_ns_get_next_node(parent_node, child_node);
/* It's really the parent's _scope_ that we want */
next_node = parent_node->child;
}
else {
/* Start search at the NEXT node */
next_node = acpi_ns_get_next_valid_node(child_node);
}
/* If any type is OK, we are done */
@ -186,9 +226,7 @@ acpi_ns_walk_namespace(acpi_object_type type,
/* 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(parent_node, child_node);
if (child_node) {
/* Found next child, get the type if we are not searching for ANY */
@ -269,8 +307,7 @@ acpi_ns_walk_namespace(acpi_object_type type,
* function has specified that the 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 (child_node->child) {
/* There is at least one child of this node, visit it */

2
drivers/acpi/acpica/nsxfobj.c
View File

@ -268,7 +268,7 @@ acpi_get_next_object(acpi_object_type type,
/* Internal function does the real work */
node = acpi_ns_get_next_node(type, parent_node, child_node);
node = acpi_ns_get_next_node_typed(type, parent_node, child_node);
if (!node) {
status = AE_NOT_FOUND;
goto unlock_and_exit;