From 353e835caab0b59bdcf0040daabe7046b4d91709 Mon Sep 17 00:00:00 2001
From: Stefan Berger <stefanb@linux.ibm.com>
Date: Sat, 28 May 2022 13:59:02 -0400
Subject: [PATCH] tpm2: Expect TPM_SUCCESS from tpm_io_getlocality() callback
 function

Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
---
 src/tpm_tpm2_interface.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/tpm_tpm2_interface.c b/src/tpm_tpm2_interface.c
index 757ff002..dd2fe3df 100644
--- a/src/tpm_tpm2_interface.c
+++ b/src/tpm_tpm2_interface.c
@@ -188,7 +188,8 @@ static TPM_RESULT TPM2_Process(unsigned char **respbuffer, uint32_t *resp_size,
     if (cbs->tpm_io_getlocality) {
         TPM_MODIFIER_INDICATOR locty;
 
-        locality = cbs->tpm_io_getlocality(&locty, 0);
+        /* called function is trusted and must return valid value */
+        cbs->tpm_io_getlocality(&locty, 0);
 
         locality = locty;
     }