From 7721aca114564e2cf74b3b786c1e5afbe9655a8b Mon Sep 17 00:00:00 2001
From: Sean Parkinson <sean@wolfssl.com>
Date: Thu, 14 Sep 2017 09:07:04 +1000
Subject: [PATCH] Fix ChaCha to check for AVX1

---
 wolfcrypt/src/chacha.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/wolfcrypt/src/chacha.c b/wolfcrypt/src/chacha.c
index 25995431c..45b0bbeef 100644
--- a/wolfcrypt/src/chacha.c
+++ b/wolfcrypt/src/chacha.c
@@ -1003,12 +1003,15 @@ int wc_Chacha_Process(ChaCha* ctx, byte* output, const byte* input,
 
 #ifdef USE_INTEL_CHACHA_SPEEDUP
     #ifdef HAVE_INTEL_AVX2
-    if (IS_INTEL_AVX2(cpuid_get_flags()))
+    if (IS_INTEL_AVX2(cpuid_get_flags())) {
         chacha_encrypt_avx2(ctx, input, output, msglen);
-    else
+        return 0;
+    }
     #endif
+    if (IS_INTEL_AVX1(cpuid_get_flags())) {
         chacha_encrypt_avx(ctx, input, output, msglen);
-    return 0;
+        return 0;
+    }
 #endif
     wc_Chacha_encrypt_bytes(ctx, input, output, msglen);