File 0009-tpm2-remove-the-unnecessary-variables.patch of Package grub2

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File 0009-tpm2-remove-the-unnecessary-variables.patch of Package grub2

From ffb0fe8f2dc9256af6df2e3199e3f950e6b8b830 Mon Sep 17 00:00:00 2001
From: Gary Lin <glin@suse.com>
Date: Wed, 8 Feb 2023 10:35:49 +0800
Subject: [PATCH 09/13] tpm2: remove the unnecessary variables

Since the NULL 'encryptedSalt' of 'TPM2_StartAuthSession' is handled as
an empty TPM2B structure, there is no need to declare an empty salt.
As for 'nonceTPM', we don't use in the following TPM2 commands, so we
can safely ignore it.

Signed-off-by: Gary Lin <glin@suse.com>
---
 grub-core/tpm2/module.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/grub-core/tpm2/module.c b/grub-core/tpm2/module.c
index 8ede48bbf..3537f223c 100644
--- a/grub-core/tpm2/module.c
+++ b/grub-core/tpm2/module.c
@@ -352,9 +352,7 @@ grub_tpm2_protector_srk_recover (const struct grub_tpm2_protector_context *ctx,
   grub_size_t sealed_key_size;
   TPM_HANDLE srk_handle;
   TPM2B_NONCE nonceCaller = { 0 };
-  TPM2B_ENCRYPTED_SECRET salt = { 0 };
   TPMT_SYM_DEF symmetric = { 0 };
-  TPM2B_NONCE nonceTPM = { 0 };
   TPMI_SH_AUTH_SESSION session;
   TPML_PCR_SELECTION pcrSel = {
     .count = 1,
@@ -405,9 +403,9 @@ grub_tpm2_protector_srk_recover (const struct grub_tpm2_protector_context *ctx,
   nonceCaller.size = TPM_SHA256_DIGEST_SIZE;
   symmetric.algorithm = TPM_ALG_NULL;
 
-  rc = TPM2_StartAuthSession (TPM_RH_NULL, TPM_RH_NULL, 0, &nonceCaller, &salt,
+  rc = TPM2_StartAuthSession (TPM_RH_NULL, TPM_RH_NULL, NULL, &nonceCaller, NULL,
                               TPM_SE_POLICY, &symmetric, TPM_ALG_SHA256,
-                              &session, &nonceTPM, 0);
+                              &session, NULL, NULL);
   if (rc)
     {
       grub_error (err, N_("Failed to start auth session (TPM2_StartAuthSession "
-- 
2.35.3

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File 0009-tpm2-remove-the-unnecessary-variables.patch of Package grub2

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