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ACPICA: Update comments 

Signed-off-by: Alexey Starikovskiy <alexey.y.starikovskiy@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Bob Moore 2007-02-02 19:48:21 +03:00 committed by Len Brown
parent ec3153fb0e
commit 3effba3206
1 changed files with 25 additions and 21 deletions
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46
drivers/acpi/namespace/nswalk.c
View File

@ -193,21 +193,28 @@ acpi_ns_walk_namespace(acpi_object_type type,
acpi_ns_get_next_node(ACPI_TYPE_ANY, parent_node,
child_node);
if (child_node) {
/*
* Found node, Get the type if we are not
* searching for ANY
*/
/* Found node, Get the type if we are not searching for ANY */
if (type != ACPI_TYPE_ANY) {
child_type = child_node->type;
}
/*
* 1) Type must match
* 2) Permanent namespace nodes are OK
* 3) Ignore temporary nodes unless told otherwise. Typically,
* the temporary nodes can cause a race condition where they can
* be deleted during the execution of the user function. Only the
* debugger namespace dump will examine the temporary nodes.
*/
if ((child_type == type) &&
(!(child_node->flags & ANOBJ_TEMPORARY) ||
(child_node->flags & ANOBJ_TEMPORARY)
&& (flags & ACPI_NS_WALK_TEMP_NODES))) {
/*
* Found a matching node, invoke the user
* callback function
* Found a matching node, invoke the user callback function.
* Unlock the namespace if flag is set.
*/
if (flags & ACPI_NS_WALK_UNLOCK) {
mutex_status =
@ -219,8 +226,9 @@ acpi_ns_walk_namespace(acpi_object_type type,
}
}
status = user_function(child_node, level,
context, return_value);
status =
user_function(child_node, level, context,
return_value);
if (flags & ACPI_NS_WALK_UNLOCK) {
mutex_status =
@ -254,20 +262,17 @@ acpi_ns_walk_namespace(acpi_object_type type,
}
/*
* Depth first search:
* Attempt to go down another level in the namespace
* if we are allowed to. Don't go any further if we
* have reached the caller specified maximum depth
* or if the user function has specified that the
* maximum depth has been reached.
* Depth first search: Attempt to go down another level in the
* namespace if we are allowed to. Don't go any further if we have
* reached the caller specified maximum depth or if the user
* 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)) {
/*
* There is at least one child of this
* node, visit the onde
*/
/* There is at least one child of this node, visit it */
level++;
parent_node = child_node;
child_node = NULL;
@ -275,9 +280,8 @@ acpi_ns_walk_namespace(acpi_object_type type,
}
} else {
/*
* No more children of this node (acpi_ns_get_next_node
* failed), go back upwards in the namespace tree to
* the node's parent.
* No more children of this node (acpi_ns_get_next_node failed), go
* back upwards in the namespace tree to the node's parent.
*/
level--;
child_node = parent_node;