security/tpm: Check for NULL pointer

Change bce49c2 (security/tpm: Improve TCPA log generation) missed
checking for NULL pointer before accessing the tcpa_table returned by
tcpa_log_init. This change fixes the boot hang observed on octopus by
ensuring pointer is checked for NULL before using it.

TEST=Verified that octopus boots up fine.

Change-Id: I2e46197065f8db1dc028a85551546263e60d46b2
Signed-off-by: Furquan Shaikh <>
Tested-by: build bot (Jenkins) <>
Reviewed-by: Justin TerAvest <>
Reviewed-by: Aaron Durbin <>
diff --git a/src/security/tpm/tspi/log.c b/src/security/tpm/tspi/log.c
index 0a6655a..17f6f1f 100644
--- a/src/security/tpm/tspi/log.c
+++ b/src/security/tpm/tspi/log.c
@@ -57,6 +57,10 @@
 	struct tcpa_entry *tce;
 	tclt = tcpa_log_init();
+	if (!tclt)
+		return;
 	if (tclt->num_entries == tclt->max_entries) {
 		printk(BIOS_WARNING, "ERROR: TCPA log table is full\n");