From 88522b0e9118a24a44526930a4d0d5d1db447a44 Mon Sep 17 00:00:00 2001
From: Gwenhael Goavec-Merou <gwenhael.goavec-merou@trabucayre.com>
Date: Thu, 26 Nov 2020 09:26:08 +0100
Subject: [PATCH] ftdiJtagBitbang: quick fix to avoid overflow in writeTDI

---
 src/ftdiJtagBitbang.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/ftdiJtagBitbang.cpp b/src/ftdiJtagBitbang.cpp
index bb9ed6e..499a6e7 100644
--- a/src/ftdiJtagBitbang.cpp
+++ b/src/ftdiJtagBitbang.cpp
@@ -170,6 +170,10 @@ int FtdiJtagBitBang::writeTDI(uint8_t *tx, uint8_t *rx, uint32_t len, bool end)
 	if (rx)
 		memset(rx, 0, len/8);
 
+	/* quick fix: use an empty buffer */
+	if (_num != 0)
+		flush();
+
 	for (uint32_t i = 0, pos = 0; i < len; i++) {
 		/* keep tms or
 		 * set tms high if it's last bit and end true */