1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/acpi/acpica/tbfadt.c b/drivers/acpi/acpica/tbfadt.c
index af8fbe12d8b7..ff89cfee0e7e 100644
--- a/drivers/acpi/acpica/tbfadt.c
+++ b/drivers/acpi/acpica/tbfadt.c
@@ -491,7 +491,8 @@ static void acpi_tb_validate_fadt(void)
                  * For each extended field, check for length mismatch between the
                  * legacy length field and the corresponding 64-bit X length field.
                  */
-                if (address64 && (address64->bit_width != ACPI_MUL_8(length))) {
+                if (address64->address &&
+                    (address64->bit_width != ACPI_MUL_8(length))) {
                         ACPI_WARNING((AE_INFO,
                                       "32/64X length mismatch in %s: %d/%d",
                                       name, ACPI_MUL_8(length),