ACPICA: Improve error messages for the namespace root node

Replace "\___" with actual descriptive text.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Erik Schmauss <erik.schmauss@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

drivers/acpi/acpica/dbnames.c

@@ -189,9 +189,15 @@ void acpi_db_dump_namespace(char *start_arg, char *depth_arg)
 	}
 
 	acpi_db_set_output_destination(ACPI_DB_DUPLICATE_OUTPUT);
-	acpi_os_printf("ACPI Namespace (from %4.4s (%p) subtree):\n",
-		       ((struct acpi_namespace_node *)subtree_entry)->name.
-		       ascii, subtree_entry);
+
+	if (((struct acpi_namespace_node *)subtree_entry)->parent) {
+		acpi_os_printf("ACPI Namespace (from %4.4s (%p) subtree):\n",
+			       ((struct acpi_namespace_node *)subtree_entry)->
+			       name.ascii, subtree_entry);
+	} else {
+		acpi_os_printf("ACPI Namespace (from %s):\n",
+			       ACPI_NAMESPACE_ROOT);
+	}
 
 	/* Display the subtree */
 

drivers/acpi/acpica/dswscope.c

@@ -115,7 +115,7 @@ acpi_ds_scope_stack_push(struct acpi_namespace_node *node,
 				      acpi_ut_get_type_name(old_scope_info->
 							    common.value)));
 	} else {
-		ACPI_DEBUG_PRINT_RAW((ACPI_DB_EXEC, "[\\___] (%s)", "ROOT"));
+		ACPI_DEBUG_PRINT_RAW((ACPI_DB_EXEC, ACPI_NAMESPACE_ROOT));
 	}
 
 	ACPI_DEBUG_PRINT_RAW((ACPI_DB_EXEC,
@@ -166,14 +166,14 @@ acpi_status acpi_ds_scope_stack_pop(struct acpi_walk_state *walk_state)
 
 	new_scope_info = walk_state->scope_info;
 	if (new_scope_info) {
-		ACPI_DEBUG_PRINT_RAW((ACPI_DB_EXEC,
-				      "[%4.4s] (%s)\n",
+		ACPI_DEBUG_PRINT_RAW((ACPI_DB_EXEC, "[%4.4s] (%s)\n",
 				      acpi_ut_get_node_name(new_scope_info->
 							    scope.node),
 				      acpi_ut_get_type_name(new_scope_info->
 							    common.value)));
 	} else {
-		ACPI_DEBUG_PRINT_RAW((ACPI_DB_EXEC, "[\\___] (ROOT)\n"));
+		ACPI_DEBUG_PRINT_RAW((ACPI_DB_EXEC, "%s\n",
+				      ACPI_NAMESPACE_ROOT));
 	}
 
 	acpi_ut_delete_generic_state(scope_info);

drivers/acpi/acpica/utstring.c

@@ -141,7 +141,7 @@ void acpi_ut_repair_name(char *name)
 	 * Special case for the root node. This can happen if we get an
 	 * error during the execution of module-level code.
 	 */
-	if (ACPI_COMPARE_NAME(name, "\\___")) {
+	if (ACPI_COMPARE_NAME(name, ACPI_ROOT_PATHNAME)) {
 		return;
 	}