From f873f170ea1c8413450e8080b1e5ca7dc450f465 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Lukas=20M=C3=A4rdian?= <slyon@ubuntu.com>
Date: Tue, 22 Aug 2023 13:02:25 +0200
Subject: [PATCH] tcti-spi-helper: uint32_t is conversion to a void* buffer
 fails on big endian

We need to convert it back to the correct endianess.
https://github.com/tpm2-software/tpm2-tss/issues/2531
---
 src/tss2-tcti/tcti-spi-helper.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/tss2-tcti/tcti-spi-helper.c b/src/tss2-tcti/tcti-spi-helper.c
index 515a53639..2d914894c 100644
--- a/src/tss2-tcti/tcti-spi-helper.c
+++ b/src/tss2-tcti/tcti-spi-helper.c
@@ -2,6 +2,8 @@
 /*
  * Copyright 2020 Fraunhofer SIT. All rights reserved.
  */
+#define _BSD_SOURCE
+#include <endian.h>
 #include <errno.h>
 #include <fcntl.h>
 #include <inttypes.h>
@@ -312,7 +314,7 @@ static uint32_t spi_tpm_helper_read_sts_reg(TSS2_TCTI_SPI_HELPER_CONTEXT* ctx)
 {
     uint32_t status = 0;
     spi_tpm_helper_read_reg(ctx, TCTI_SPI_HELPER_TPM_STS_REG, &status, sizeof(status));
-    return status;
+    return le32toh(status);
 }
 
 static void spi_tpm_helper_write_sts_reg(TSS2_TCTI_SPI_HELPER_CONTEXT* ctx, uint32_t status)