v4.19.13 snapshot.
diff --git a/drivers/acpi/acpica/dsdebug.c b/drivers/acpi/acpica/dsdebug.c
new file mode 100644
index 0000000..9d33f0b
--- /dev/null
+++ b/drivers/acpi/acpica/dsdebug.c
@@ -0,0 +1,205 @@
+// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
+/******************************************************************************
+ *
+ * Module Name: dsdebug - Parser/Interpreter interface - debugging
+ *
+ * Copyright (C) 2000 - 2018, Intel Corp.
+ *
+ *****************************************************************************/
+
+#include <acpi/acpi.h>
+#include "accommon.h"
+#include "acdispat.h"
+#include "acnamesp.h"
+#ifdef ACPI_DISASSEMBLER
+#include "acdisasm.h"
+#endif
+#include "acinterp.h"
+
+#define _COMPONENT ACPI_DISPATCHER
+ACPI_MODULE_NAME("dsdebug")
+
+#if defined(ACPI_DEBUG_OUTPUT) || defined(ACPI_DEBUGGER)
+/* Local prototypes */
+static void
+acpi_ds_print_node_pathname(struct acpi_namespace_node *node,
+ const char *message);
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ds_print_node_pathname
+ *
+ * PARAMETERS: node - Object
+ * message - Prefix message
+ *
+ * DESCRIPTION: Print an object's full namespace pathname
+ * Manages allocation/freeing of a pathname buffer
+ *
+ ******************************************************************************/
+
+static void
+acpi_ds_print_node_pathname(struct acpi_namespace_node *node,
+ const char *message)
+{
+ struct acpi_buffer buffer;
+ acpi_status status;
+
+ ACPI_FUNCTION_TRACE(ds_print_node_pathname);
+
+ if (!node) {
+ ACPI_DEBUG_PRINT_RAW((ACPI_DB_DISPATCH, "[NULL NAME]"));
+ return_VOID;
+ }
+
+ /* Convert handle to full pathname and print it (with supplied message) */
+
+ buffer.length = ACPI_ALLOCATE_LOCAL_BUFFER;
+
+ status = acpi_ns_handle_to_pathname(node, &buffer, TRUE);
+ if (ACPI_SUCCESS(status)) {
+ if (message) {
+ ACPI_DEBUG_PRINT_RAW((ACPI_DB_DISPATCH, "%s ",
+ message));
+ }
+
+ ACPI_DEBUG_PRINT_RAW((ACPI_DB_DISPATCH, "[%s] (Node %p)",
+ (char *)buffer.pointer, node));
+ ACPI_FREE(buffer.pointer);
+ }
+
+ return_VOID;
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ds_dump_method_stack
+ *
+ * PARAMETERS: status - Method execution status
+ * walk_state - Current state of the parse tree walk
+ * op - Executing parse op
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Called when a method has been aborted because of an error.
+ * Dumps the method execution stack.
+ *
+ ******************************************************************************/
+
+void
+acpi_ds_dump_method_stack(acpi_status status,
+ struct acpi_walk_state *walk_state,
+ union acpi_parse_object *op)
+{
+ union acpi_parse_object *next;
+ struct acpi_thread_state *thread;
+ struct acpi_walk_state *next_walk_state;
+ struct acpi_namespace_node *previous_method = NULL;
+ union acpi_operand_object *method_desc;
+
+ ACPI_FUNCTION_TRACE(ds_dump_method_stack);
+
+ /* Ignore control codes, they are not errors */
+
+ if ((status & AE_CODE_MASK) == AE_CODE_CONTROL) {
+ return_VOID;
+ }
+
+ /* We may be executing a deferred opcode */
+
+ if (walk_state->deferred_node) {
+ ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
+ "Executing subtree for Buffer/Package/Region\n"));
+ return_VOID;
+ }
+
+ /*
+ * If there is no Thread, we are not actually executing a method.
+ * This can happen when the iASL compiler calls the interpreter
+ * to perform constant folding.
+ */
+ thread = walk_state->thread;
+ if (!thread) {
+ return_VOID;
+ }
+
+ /* Display exception and method name */
+
+ ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
+ "\n**** Exception %s during execution of method ",
+ acpi_format_exception(status)));
+
+ acpi_ds_print_node_pathname(walk_state->method_node, NULL);
+
+ /* Display stack of executing methods */
+
+ ACPI_DEBUG_PRINT_RAW((ACPI_DB_DISPATCH,
+ "\n\nMethod Execution Stack:\n"));
+ next_walk_state = thread->walk_state_list;
+
+ /* Walk list of linked walk states */
+
+ while (next_walk_state) {
+ method_desc = next_walk_state->method_desc;
+ if (method_desc) {
+ acpi_ex_stop_trace_method((struct acpi_namespace_node *)
+ method_desc->method.node,
+ method_desc, walk_state);
+ }
+
+ ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
+ " Method [%4.4s] executing: ",
+ acpi_ut_get_node_name(next_walk_state->
+ method_node)));
+
+ /* First method is the currently executing method */
+
+ if (next_walk_state == walk_state) {
+ if (op) {
+
+ /* Display currently executing ASL statement */
+
+ next = op->common.next;
+ op->common.next = NULL;
+
+#ifdef ACPI_DISASSEMBLER
+ if (walk_state->method_node !=
+ acpi_gbl_root_node) {
+
+ /* More verbose if not module-level code */
+
+ acpi_os_printf("Failed at ");
+ acpi_dm_disassemble(next_walk_state, op,
+ ACPI_UINT32_MAX);
+ }
+#endif
+ op->common.next = next;
+ }
+ } else {
+ /*
+ * This method has called another method
+ * NOTE: the method call parse subtree is already deleted at
+ * this point, so we cannot disassemble the method invocation.
+ */
+ ACPI_DEBUG_PRINT_RAW((ACPI_DB_DISPATCH,
+ "Call to method "));
+ acpi_ds_print_node_pathname(previous_method, NULL);
+ }
+
+ previous_method = next_walk_state->method_node;
+ next_walk_state = next_walk_state->next;
+ ACPI_DEBUG_PRINT_RAW((ACPI_DB_DISPATCH, "\n"));
+ }
+
+ return_VOID;
+}
+
+#else
+void
+acpi_ds_dump_method_stack(acpi_status status,
+ struct acpi_walk_state *walk_state,
+ union acpi_parse_object *op)
+{
+ return;
+}
+
+#endif