ACPICA: Namespace: fix memory leak from building prefixed pathname

ACPICA commit f8ca5db30605467b851f86d152079631c27eeca8

Link: https://github.com/acpica/acpica/commit/f8ca5db3
Signed-off-by: Erik Schmauss <erik.schmauss@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

diff --git a/drivers/acpi/acpica/nsnames.c b/drivers/acpi/acpica/nsnames.c
index 4203d4589b6d64ff97cf00fe0caad6c366fa9ab6..22c92d1a24d8f8e48567b5c06c5540e67da4b456 100644 (file)
--- a/drivers/acpi/acpica/nsnames.c
+++ b/drivers/acpi/acpica/nsnames.c
@@ -377,7 +377,7 @@ char *acpi_ns_build_prefixed_pathname(union acpi_generic_state *prefix_scope,
 {
        acpi_status status;
        char *full_path = NULL;
-       char *external_path;
+       char *external_path = NULL;
        char *prefix_path = NULL;
        u32 prefix_path_length = 0;
 
@@ -423,6 +423,9 @@ cleanup:
        if (prefix_path) {
                ACPI_FREE(prefix_path);
        }
+       if (external_path) {
+               ACPI_FREE(external_path);
+       }
 
        return (full_path);
 }