ACPICA: Dispatcher: Fix a resource leak issue in acpi_ds_auto_serialize_method().

ACPICA commit 29d03840cbab435e8ea82e9339ff9d84535c647d

This patch fixes a resource leak issue in acpi_ds_auto_serialize_method().
It is reported by the "Coverity" tool as unsecure code. Lv Zheng.

Link: https://github.com/acpica/acpica/commit/29d03840
Link: https://jira01.devtools.intel.com/browse/LCK-2142
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

1 files changed, 2 insertions, 3 deletions

diff --git a/drivers/acpi/acpica/dsmethod.c b/drivers/acpi/acpica/dsmethod.c
index d72565a3c646..85bb951430d9 100644
--- a/drivers/acpi/acpica/dsmethod.c
+++ b/drivers/acpi/acpica/dsmethod.c
@@ -116,6 +116,7 @@ acpi_ds_auto_serialize_method(struct acpi_namespace_node *node,
         walk_state =
             acpi_ds_create_walk_state(node->owner_id, NULL, NULL, NULL);
         if (!walk_state) {
+                acpi_ps_free_op(op);
                 return_ACPI_STATUS(AE_NO_MEMORY);
         }
 
@@ -125,6 +126,7 @@ acpi_ds_auto_serialize_method(struct acpi_namespace_node *node,
                                   obj_desc->method.aml_length, NULL, 0);
         if (ACPI_FAILURE(status)) {
                 acpi_ds_delete_walk_state(walk_state);
+                acpi_ps_free_op(op);
                 return_ACPI_STATUS(status);
         }
 
@@ -133,9 +135,6 @@ acpi_ds_auto_serialize_method(struct acpi_namespace_node *node,
         /* Parse the method, scan for creation of named objects */
 
         status = acpi_ps_parse_aml(walk_state);
-        if (ACPI_FAILURE(status)) {
-                return_ACPI_STATUS(status);
-        }
 
         acpi_ps_delete_parse_tree(op);
         return_ACPI_STATUS(status);