1 files changed, 7 insertions, 7 deletions

diff --git a/drivers/acpi/resources/rscalc.c b/drivers/acpi/resources/rscalc.c
index 1dfa6906d455..7d6481d9fbec 100644
--- a/drivers/acpi/resources/rscalc.c
+++ b/drivers/acpi/resources/rscalc.c
@@ -541,13 +541,13 @@ acpi_rs_get_pci_routing_table_length(union acpi_operand_object *package_object,
 
                 for (table_index = 0; table_index < 4 && !name_found;
                      table_index++) {
-                        if ((ACPI_TYPE_STRING ==
-                             ACPI_GET_OBJECT_TYPE(*sub_object_list))
-                            ||
-                            ((ACPI_TYPE_LOCAL_REFERENCE ==
-                              ACPI_GET_OBJECT_TYPE(*sub_object_list))
-                             && ((*sub_object_list)->reference.opcode ==
-                                 AML_INT_NAMEPATH_OP))) {
+                        if (*sub_object_list && /* Null object allowed */
+                            ((ACPI_TYPE_STRING ==
+                              ACPI_GET_OBJECT_TYPE(*sub_object_list)) ||
+                             ((ACPI_TYPE_LOCAL_REFERENCE ==
+                               ACPI_GET_OBJECT_TYPE(*sub_object_list)) &&
+                              ((*sub_object_list)->reference.opcode ==
+                               AML_INT_NAMEPATH_OP)))) {
                                 name_found = TRUE;
                         } else {
                                 /* Look at the next element */