diff --git a/drivers/char/tpm/tpm_bios.c b/drivers/char/tpm/tpm_bios.c
index 60a2d26..09bb95a 100644
--- a/drivers/char/tpm/tpm_bios.c
+++ b/drivers/char/tpm/tpm_bios.c
@@ -27,9 +27,7 @@
 #include <acpi/actbl.h>
 #include "tpm.h"
 
-#define TCG_EVENT_NAME_LEN_MAX	255
 #define MAX_TEXT_EVENT		1000	/* Max event string length */
-#define ACPI_TCPA_SIG		"TCPA"	/* 0x41504354 /'TCPA' */
 
 enum bios_platform_class {
 	BIOS_CLIENT = 0x00,