ACPICA: iasl: handle empty connection_node

[ Upstream commit a0a2459b79414584af6c46dd8c6f866d8f1aa421 ]

ACPICA commit 6c551e2c9487067d4b085333e7fe97e965a11625

Link: https://github.com/acpica/acpica/commit/6c551e2c
Signed-off-by: Aleksandrs Vinarskis <alex.vinarskis@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/acpi/acpica/exprep.c b/drivers/acpi/acpica/exprep.c
index 08196fa17080e2c4b84dda069875c74700473eeb..82b1fa2d201fedc91c1e1ae69a64150145309b5a 100644 (file)
--- a/drivers/acpi/acpica/exprep.c
+++ b/drivers/acpi/acpica/exprep.c
@@ -437,6 +437,9 @@ acpi_status acpi_ex_prep_field_value(struct acpi_create_field_info *info)
 
                if (info->connection_node) {
                        second_desc = info->connection_node->object;
+                       if (second_desc == NULL) {
+                               break;
+                       }
                        if (!(second_desc->common.flags & AOPOBJ_DATA_VALID)) {
                                status =
                                    acpi_ds_get_buffer_arguments(second_desc);