v4.19.13 snapshot.
diff --git a/drivers/acpi/acpica/dsinit.c b/drivers/acpi/acpica/dsinit.c
new file mode 100644
index 0000000..e8de1b0
--- /dev/null
+++ b/drivers/acpi/acpica/dsinit.c
@@ -0,0 +1,224 @@
+// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
+/******************************************************************************
+ *
+ * Module Name: dsinit - Object initialization namespace walk
+ *
+ * Copyright (C) 2000 - 2018, Intel Corp.
+ *
+ *****************************************************************************/
+
+#include <acpi/acpi.h>
+#include "accommon.h"
+#include "acdispat.h"
+#include "acnamesp.h"
+#include "actables.h"
+#include "acinterp.h"
+
+#define _COMPONENT ACPI_DISPATCHER
+ACPI_MODULE_NAME("dsinit")
+
+/* Local prototypes */
+static acpi_status
+acpi_ds_init_one_object(acpi_handle obj_handle,
+ u32 level, void *context, void **return_value);
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ds_init_one_object
+ *
+ * PARAMETERS: obj_handle - Node for the object
+ * level - Current nesting level
+ * context - Points to a init info struct
+ * return_value - Not used
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Callback from acpi_walk_namespace. Invoked for every object
+ * within the namespace.
+ *
+ * Currently, the only objects that require initialization are:
+ * 1) Methods
+ * 2) Operation Regions
+ *
+ ******************************************************************************/
+
+static acpi_status
+acpi_ds_init_one_object(acpi_handle obj_handle,
+ u32 level, void *context, void **return_value)
+{
+ struct acpi_init_walk_info *info =
+ (struct acpi_init_walk_info *)context;
+ struct acpi_namespace_node *node =
+ (struct acpi_namespace_node *)obj_handle;
+ acpi_status status;
+ union acpi_operand_object *obj_desc;
+
+ ACPI_FUNCTION_ENTRY();
+
+ /*
+ * We are only interested in NS nodes owned by the table that
+ * was just loaded
+ */
+ if (node->owner_id != info->owner_id) {
+ return (AE_OK);
+ }
+
+ info->object_count++;
+
+ /* And even then, we are only interested in a few object types */
+
+ switch (acpi_ns_get_type(obj_handle)) {
+ case ACPI_TYPE_REGION:
+
+ status = acpi_ds_initialize_region(obj_handle);
+ if (ACPI_FAILURE(status)) {
+ ACPI_EXCEPTION((AE_INFO, status,
+ "During Region initialization %p [%4.4s]",
+ obj_handle,
+ acpi_ut_get_node_name(obj_handle)));
+ }
+
+ info->op_region_count++;
+ break;
+
+ case ACPI_TYPE_METHOD:
+ /*
+ * Auto-serialization support. We will examine each method that is
+ * not_serialized to determine if it creates any Named objects. If
+ * it does, it will be marked serialized to prevent problems if
+ * the method is entered by two or more threads and an attempt is
+ * made to create the same named object twice -- which results in
+ * an AE_ALREADY_EXISTS exception and method abort.
+ */
+ info->method_count++;
+ obj_desc = acpi_ns_get_attached_object(node);
+ if (!obj_desc) {
+ break;
+ }
+
+ /* Ignore if already serialized */
+
+ if (obj_desc->method.info_flags & ACPI_METHOD_SERIALIZED) {
+ info->serial_method_count++;
+ break;
+ }
+
+ if (acpi_gbl_auto_serialize_methods) {
+
+ /* Parse/scan method and serialize it if necessary */
+
+ acpi_ds_auto_serialize_method(node, obj_desc);
+ if (obj_desc->method.
+ info_flags & ACPI_METHOD_SERIALIZED) {
+
+ /* Method was just converted to Serialized */
+
+ info->serial_method_count++;
+ info->serialized_method_count++;
+ break;
+ }
+ }
+
+ info->non_serial_method_count++;
+ break;
+
+ case ACPI_TYPE_DEVICE:
+
+ info->device_count++;
+ break;
+
+ default:
+
+ break;
+ }
+
+ /*
+ * We ignore errors from above, and always return OK, since
+ * we don't want to abort the walk on a single error.
+ */
+ return (AE_OK);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ds_initialize_objects
+ *
+ * PARAMETERS: table_desc - Descriptor for parent ACPI table
+ * start_node - Root of subtree to be initialized.
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Walk the namespace starting at "StartNode" and perform any
+ * necessary initialization on the objects found therein
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ds_initialize_objects(u32 table_index,
+ struct acpi_namespace_node *start_node)
+{
+ acpi_status status;
+ struct acpi_init_walk_info info;
+ struct acpi_table_header *table;
+ acpi_owner_id owner_id;
+
+ ACPI_FUNCTION_TRACE(ds_initialize_objects);
+
+ status = acpi_tb_get_owner_id(table_index, &owner_id);
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
+ }
+
+ ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
+ "**** Starting initialization of namespace objects ****\n"));
+
+ /* Set all init info to zero */
+
+ memset(&info, 0, sizeof(struct acpi_init_walk_info));
+
+ info.owner_id = owner_id;
+ info.table_index = table_index;
+
+ /* Walk entire namespace from the supplied root */
+
+ /*
+ * We don't use acpi_walk_namespace since we do not want to acquire
+ * the namespace reader lock.
+ */
+ status =
+ acpi_ns_walk_namespace(ACPI_TYPE_ANY, start_node, ACPI_UINT32_MAX,
+ ACPI_NS_WALK_NO_UNLOCK,
+ acpi_ds_init_one_object, NULL, &info, NULL);
+ if (ACPI_FAILURE(status)) {
+ ACPI_EXCEPTION((AE_INFO, status, "During WalkNamespace"));
+ }
+
+ status = acpi_get_table_by_index(table_index, &table);
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
+ }
+
+ /* DSDT is always the first AML table */
+
+ if (ACPI_COMPARE_NAME(table->signature, ACPI_SIG_DSDT)) {
+ ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT,
+ "\nInitializing Namespace objects:\n"));
+ }
+
+ /* Summary of objects initialized */
+
+ ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT,
+ "Table [%4.4s: %-8.8s] (id %.2X) - %4u Objects with %3u Devices, "
+ "%3u Regions, %4u Methods (%u/%u/%u Serial/Non/Cvt)\n",
+ table->signature, table->oem_table_id, owner_id,
+ info.object_count, info.device_count,
+ info.op_region_count, info.method_count,
+ info.serial_method_count,
+ info.non_serial_method_count,
+ info.serialized_method_count));
+
+ ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "%u Methods, %u Regions\n",
+ info.method_count, info.op_region_count));
+
+ return_ACPI_STATUS(AE_OK);
+}