From: Bob Moore <robert.moore@intel.com>
Date: Thu, 3 Aug 2017 14:26:31 +0800
Subject: ACPICA: Namespace: Update/fix an error message
Patch-mainline: v4.14-rc1
Git-commit: 6d9229d67df35f9b7f922d6bdb4d6505eb0b900f
References: bsc#1117419

ACPICA commit 8b7fa979ef81469e70f501f582466a265d6f595b

Was emitting an internal namestring without converting it to
the external format.

Link: https://github.com/acpica/acpica/commit/8b7fa979
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Lee, Chun-Yi <jlee@suse.com>
---
 drivers/acpi/acpica/nsaccess.c |   20 +++++++++++++++-----
 1 file changed, 15 insertions(+), 5 deletions(-)

--- a/drivers/acpi/acpica/nsaccess.c
+++ b/drivers/acpi/acpica/nsaccess.c
@@ -292,6 +292,7 @@ acpi_ns_lookup(union acpi_generic_state
 {
 	acpi_status status;
 	char *path = pathname;
+	char *external_path;
 	struct acpi_namespace_node *prefix_node;
 	struct acpi_namespace_node *current_node = NULL;
 	struct acpi_namespace_node *this_node = NULL;
@@ -427,13 +428,22 @@ acpi_ns_lookup(union acpi_generic_state
 				num_carats++;
 				this_node = this_node->parent;
 				if (!this_node) {
+					/*
+					 * Current scope has no parent scope. Externalize
+					 * the internal path for error message.
+					 */
+					status =
+					    acpi_ns_externalize_name
+					    (ACPI_UINT32_MAX, pathname, NULL,
+					     &external_path);
+					if (ACPI_SUCCESS(status)) {
+						ACPI_ERROR((AE_INFO,
+							    "%s: Path has too many parent prefixes (^)",
+							    external_path));
 
-					/* Current scope has no parent scope */
+						ACPI_FREE(external_path);
+					}
 
-					ACPI_ERROR((AE_INFO,
-						    "%s: Path has too many parent prefixes (^) "
-						    "- reached beyond root node",
-						    pathname));
 					return_ACPI_STATUS(AE_NOT_FOUND);
 				}
 			}