ACPICA: Update comments (3effba32) · Commits · jan.koester / Linux

drivers/acpi/namespace/nswalk.c

+25 −21

Original line number	Original line	Diff line number	Diff line
	@@ -193,21 +193,28 @@ acpi_ns_walk_namespace(acpi_object_type type,
	acpi_ns_get_next_node(ACPI_TYPE_ANY, parent_node,		acpi_ns_get_next_node(ACPI_TYPE_ANY, parent_node,
	child_node);		child_node);
	if (child_node) {		if (child_node) {
	/*
	* Found node, Get the type if we are not		/* Found node, Get the type if we are not searching for ANY */
	* searching for ANY
	*/
	if (type != ACPI_TYPE_ANY) {		if (type != ACPI_TYPE_ANY) {
	child_type = child_node->type;		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) &&		if ((child_type == type) &&
	(!(child_node->flags & ANOBJ_TEMPORARY) \|\|		(!(child_node->flags & ANOBJ_TEMPORARY) \|\|
	(child_node->flags & ANOBJ_TEMPORARY)		(child_node->flags & ANOBJ_TEMPORARY)
	&& (flags & ACPI_NS_WALK_TEMP_NODES))) {		&& (flags & ACPI_NS_WALK_TEMP_NODES))) {
	/*		/*
	* Found a matching node, invoke the user		* Found a matching node, invoke the user callback function.
	* callback function		* Unlock the namespace if flag is set.
	*/		*/
	if (flags & ACPI_NS_WALK_UNLOCK) {		if (flags & ACPI_NS_WALK_UNLOCK) {
	mutex_status =		mutex_status =
	@@ -219,8 +226,9 @@ acpi_ns_walk_namespace(acpi_object_type type,
	}		}
	}		}

	status = user_function(child_node, level,		status =
	context, return_value);		user_function(child_node, level, context,
			return_value);

	if (flags & ACPI_NS_WALK_UNLOCK) {		if (flags & ACPI_NS_WALK_UNLOCK) {
	mutex_status =		mutex_status =
	@@ -254,20 +262,17 @@ acpi_ns_walk_namespace(acpi_object_type type,
	}		}

	/*		/*
	* Depth first search:		* Depth first search: Attempt to go down another level in the
	* Attempt to go down another level in the namespace		* namespace if we are allowed to. Don't go any further if we have
	* if we are allowed to. Don't go any further if we		* reached the caller specified maximum depth or if the user
	* have reached the caller specified maximum depth		* function has specified that the maximum depth has been reached.
	* or if the user function has specified that the
	* maximum depth has been reached.
	*/		*/
	if ((level < max_depth) && (status != AE_CTRL_DEPTH)) {		if ((level < max_depth) && (status != AE_CTRL_DEPTH)) {
	if (acpi_ns_get_next_node		if (acpi_ns_get_next_node
	(ACPI_TYPE_ANY, child_node, NULL)) {		(ACPI_TYPE_ANY, child_node, NULL)) {
	/*
	* There is at least one child of this		/* There is at least one child of this node, visit it */
	* node, visit the onde
	*/
	level++;		level++;
	parent_node = child_node;		parent_node = child_node;
	child_node = NULL;		child_node = NULL;
	@@ -275,9 +280,8 @@ acpi_ns_walk_namespace(acpi_object_type type,
	}		}
	} else {		} else {
	/*		/*
	* No more children of this node (acpi_ns_get_next_node		* No more children of this node (acpi_ns_get_next_node failed), go
	* failed), go back upwards in the namespace tree to		* back upwards in the namespace tree to the node's parent.
	* the node's parent.
	*/		*/
	level--;		level--;
	child_node = parent_node;		child_node = parent_node;