static acpi_status acpi_ns_delete_subtree(acpi_handle start_handle)
{
acpi_status status;
acpi_handle child_handle;
acpi_handle parent_handle;
acpi_handle next_child_handle;
acpi_handle dummy;
u32 level;
ACPI_FUNCTION_TRACE(ns_delete_subtree);
parent_handle = start_handle;
child_handle = NULL;
level = 1;
while (level > 0) {
status = acpi_get_next_object(ACPI_TYPE_ANY, parent_handle,
child_handle, &next_child_handle);
child_handle = next_child_handle;
if (ACPI_SUCCESS(status)) {
if (ACPI_SUCCESS
(acpi_get_next_object
(ACPI_TYPE_ANY, child_handle, NULL, &dummy))) {
level++;
parent_handle = child_handle;
child_handle = NULL;
}
} else {
level--;
acpi_ns_delete_children(child_handle);
child_handle = parent_handle;
status = acpi_get_parent(parent_handle, &parent_handle);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
}
}
acpi_ns_remove_node(child_handle);
return_ACPI_STATUS(AE_OK);
}
static acpi_status acpi_ns_delete_subtree(acpi_handle start_handle)
{
acpi_status status;
acpi_handle child_handle;
acpi_handle parent_handle;
acpi_handle next_child_handle;
acpi_handle dummy;
u32 level;
ACPI_FUNCTION_TRACE(ns_delete_subtree);
parent_handle = start_handle;
child_handle = NULL;
level = 1;
/*
* Traverse the tree of objects until we bubble back up
* to where we started.
*/
while (level > 0) {
/* Attempt to get the next object in this scope */
status = acpi_get_next_object(ACPI_TYPE_ANY, parent_handle,
child_handle, &next_child_handle);
child_handle = next_child_handle;
/* Did we get a new object? */
if (ACPI_SUCCESS(status)) {
/* Check if this object has any children */
if (ACPI_SUCCESS
(acpi_get_next_object
(ACPI_TYPE_ANY, child_handle, NULL, &dummy))) {
/*
* There is at least one child of this object,
* visit the object
*/
level++;
parent_handle = child_handle;
child_handle = NULL;
}
} else {
/*
* No more children in this object, go back up to
* the object's parent
*/
level--;
/* Delete all children now */
acpi_ns_delete_children(child_handle);
child_handle = parent_handle;
status = acpi_get_parent(parent_handle, &parent_handle);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
}
}
/* Now delete the starting object, and we are done */
acpi_ns_remove_node(child_handle);
return_ACPI_STATUS(AE_OK);
}
void acpi_ns_delete_namespace_by_owner(acpi_owner_id owner_id)
{
struct acpi_namespace_node *child_node;
struct acpi_namespace_node *deletion_node;
struct acpi_namespace_node *parent_node;
u32 level;
acpi_status status;
ACPI_FUNCTION_TRACE_U32(ns_delete_namespace_by_owner, owner_id);
if (owner_id == 0) {
return_VOID;
}
status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
if (ACPI_FAILURE(status)) {
return_VOID;
}
deletion_node = NULL;
parent_node = acpi_gbl_root_node;
child_node = NULL;
level = 1;
while (level > 0) {
child_node = acpi_ns_get_next_node(parent_node, child_node);
if (deletion_node) {
acpi_ns_delete_children(deletion_node);
acpi_ns_remove_node(deletion_node);
deletion_node = NULL;
}
if (child_node) {
if (child_node->owner_id == owner_id) {
acpi_ns_detach_object(child_node);
}
if (child_node->child) {
level++;
parent_node = child_node;
child_node = NULL;
} else if (child_node->owner_id == owner_id) {
deletion_node = child_node;
}
} else {
level--;
if (level != 0) {
if (parent_node->owner_id == owner_id) {
deletion_node = parent_node;
}
}
child_node = parent_node;
parent_node = acpi_ns_get_parent_node(parent_node);
}
}
(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
return_VOID;
}
void acpi_ns_delete_namespace_by_owner(acpi_owner_id owner_id)
{
struct acpi_namespace_node *child_node;
struct acpi_namespace_node *deletion_node;
struct acpi_namespace_node *parent_node;
u32 level;
acpi_status status;
ACPI_FUNCTION_TRACE_U32(ns_delete_namespace_by_owner, owner_id);
if (owner_id == 0) {
return_VOID;
}
/* Lock namespace for possible update */
status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
if (ACPI_FAILURE(status)) {
return_VOID;
}
deletion_node = NULL;
parent_node = acpi_gbl_root_node;
child_node = NULL;
level = 1;
/*
* Traverse the tree of nodes until we bubble back up
* to where we started.
*/
while (level > 0) {
/*
* 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(parent_node, child_node);
if (deletion_node) {
acpi_ns_delete_children(deletion_node);
acpi_ns_remove_node(deletion_node);
deletion_node = NULL;
}
if (child_node) {
if (child_node->owner_id == owner_id) {
/* Found a matching child node - detach any attached object */
acpi_ns_detach_object(child_node);
}
/* Check if this node has any children */
if (child_node->child) {
/*
* There is at least one child of this node,
* visit the node
*/
level++;
parent_node = child_node;
child_node = NULL;
} else if (child_node->owner_id == owner_id) {
deletion_node = child_node;
}
} else {
/*
* No more children of this parent node.
* Move up to the grandparent.
*/
level--;
if (level != 0) {
if (parent_node->owner_id == owner_id) {
deletion_node = parent_node;
}
}
/* New "last child" is this parent node */
child_node = parent_node;
/* Move up the tree to the grandparent */
parent_node = acpi_ns_get_parent_node(parent_node);
}
}
(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
return_VOID;
}
acpi_status
acpi_ps_complete_op(struct acpi_walk_state *walk_state,
union acpi_parse_object **op, acpi_status status)
{
acpi_status status2;
ACPI_FUNCTION_TRACE_PTR(ps_complete_op, walk_state);
/*
* Finished one argument of the containing scope
*/
walk_state->parser_state.scope->parse_scope.arg_count--;
/* Close this Op (will result in parse subtree deletion) */
status2 = acpi_ps_complete_this_op(walk_state, *op);
if (ACPI_FAILURE(status2)) {
return_ACPI_STATUS(status2);
}
*op = NULL;
switch (status) {
case AE_OK:
break;
case AE_CTRL_TRANSFER:
/* We are about to transfer to a called method */
walk_state->prev_op = NULL;
walk_state->prev_arg_types = walk_state->arg_types;
return_ACPI_STATUS(status);
case AE_CTRL_END:
acpi_ps_pop_scope(&(walk_state->parser_state), op,
&walk_state->arg_types,
&walk_state->arg_count);
if (*op) {
walk_state->op = *op;
walk_state->op_info =
acpi_ps_get_opcode_info((*op)->common.aml_opcode);
walk_state->opcode = (*op)->common.aml_opcode;
status = walk_state->ascending_callback(walk_state);
status =
acpi_ps_next_parse_state(walk_state, *op, status);
status2 = acpi_ps_complete_this_op(walk_state, *op);
if (ACPI_FAILURE(status2)) {
return_ACPI_STATUS(status2);
}
}
status = AE_OK;
break;
case AE_CTRL_BREAK:
case AE_CTRL_CONTINUE:
/* Pop off scopes until we find the While */
while (!(*op) || ((*op)->common.aml_opcode != AML_WHILE_OP)) {
acpi_ps_pop_scope(&(walk_state->parser_state), op,
&walk_state->arg_types,
&walk_state->arg_count);
}
/* Close this iteration of the While loop */
walk_state->op = *op;
walk_state->op_info =
acpi_ps_get_opcode_info((*op)->common.aml_opcode);
walk_state->opcode = (*op)->common.aml_opcode;
status = walk_state->ascending_callback(walk_state);
status = acpi_ps_next_parse_state(walk_state, *op, status);
status2 = acpi_ps_complete_this_op(walk_state, *op);
if (ACPI_FAILURE(status2)) {
return_ACPI_STATUS(status2);
}
status = AE_OK;
break;
case AE_CTRL_TERMINATE:
/* Clean up */
do {
if (*op) {
status2 =
acpi_ps_complete_this_op(walk_state, *op);
if (ACPI_FAILURE(status2)) {
return_ACPI_STATUS(status2);
}
acpi_ut_delete_generic_state
(acpi_ut_pop_generic_state
(&walk_state->control_state));
}
acpi_ps_pop_scope(&(walk_state->parser_state), op,
&walk_state->arg_types,
&walk_state->arg_count);
} while (*op);
return_ACPI_STATUS(AE_OK);
default: /* All other non-AE_OK status */
do {
if (*op) {
/*
* These Opcodes need to be removed from the namespace because they
* get created even if these opcodes cannot be created due to
* errors.
*/
if (((*op)->common.aml_opcode == AML_REGION_OP)
|| ((*op)->common.aml_opcode ==
AML_DATA_REGION_OP)) {
acpi_ns_delete_children((*op)->common.
node);
acpi_ns_remove_node((*op)->common.node);
(*op)->common.node = NULL;
acpi_ps_delete_parse_tree(*op);
}
status2 =
acpi_ps_complete_this_op(walk_state, *op);
if (ACPI_FAILURE(status2)) {
return_ACPI_STATUS(status2);
}
}
acpi_ps_pop_scope(&(walk_state->parser_state), op,
&walk_state->arg_types,
&walk_state->arg_count);
} while (*op);
#if 0
/*
* TBD: Cleanup parse ops on error
*/
if (*op == NULL) {
acpi_ps_pop_scope(parser_state, op,
&walk_state->arg_types,
&walk_state->arg_count);
}
#endif
walk_state->prev_op = NULL;
walk_state->prev_arg_types = walk_state->arg_types;
if (walk_state->parse_flags & ACPI_PARSE_MODULE_LEVEL) {
/*
* There was something that went wrong while executing code at the
* module-level. We need to skip parsing whatever caused the
* error and keep going. One runtime error during the table load
* should not cause the entire table to not be loaded. This is
* because there could be correct AML beyond the parts that caused
* the runtime error.
*/
ACPI_INFO(("Ignoring error and continuing table load"));
return_ACPI_STATUS(AE_OK);
}
return_ACPI_STATUS(status);
}
/* This scope complete? */
if (acpi_ps_has_completed_scope(&(walk_state->parser_state))) {
acpi_ps_pop_scope(&(walk_state->parser_state), op,
&walk_state->arg_types,
&walk_state->arg_count);
ACPI_DEBUG_PRINT((ACPI_DB_PARSE, "Popped scope, Op=%p\n", *op));
} else {
*op = NULL;
}
return_ACPI_STATUS(AE_OK);
}
