From 20771849534341b709aef734a7f00696595fd4ee Mon Sep 17 00:00:00 2001
From: Marco Oliverio <marco@wolfssl.com>
Date: Mon, 31 Jan 2022 16:38:13 +0100
Subject: [PATCH] psa: add compile-time error if builded with crypto cb

---
 wolfssl/wolfcrypt/port/psa/psa.h | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/wolfssl/wolfcrypt/port/psa/psa.h b/wolfssl/wolfcrypt/port/psa/psa.h
index 6c19a7887..e4683b28b 100644
--- a/wolfssl/wolfcrypt/port/psa/psa.h
+++ b/wolfssl/wolfcrypt/port/psa/psa.h
@@ -44,6 +44,13 @@
 
 #include <wolfssl/wolfcrypt/settings.h>
 
+/* PSA implementation takes over the Sha struct and Sha functions implementation
+   completely. Devoiding the struct of the DevId field and hooks to make
+   crypto_cb work. */
+#if !defined(WOLFSSL_PSA_NO_HASH) && defined(WOLF_CRYPTO_CB)
+#error "WOLFSSL PSA is not supported with WOLF_CRYPTO_CB"
+#endif
+
 #if defined(WOLFSSL_HAVE_PSA)
 
 #include <psa/crypto.h>