From 6e740108bf2c32632d8dc107270b49b6de3ba16d Mon Sep 17 00:00:00 2001
From: michael-west <michael.west@ettus.com>
Date: Tue, 15 Jul 2014 15:18:47 -0700
Subject: Fix for BUG #469 - Added mutex for write_uart()

---
 host/lib/usrp/x300/x300_fw_uart.cpp | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'host')

diff --git a/host/lib/usrp/x300/x300_fw_uart.cpp b/host/lib/usrp/x300/x300_fw_uart.cpp
index d87b9ab9f..b0fae124d 100644
--- a/host/lib/usrp/x300/x300_fw_uart.cpp
+++ b/host/lib/usrp/x300/x300_fw_uart.cpp
@@ -56,6 +56,7 @@ struct x300_uart_iface : uart_iface
 
     void write_uart(const std::string &buff)
     {
+        boost::mutex::scoped_lock(_write_mutex);
         BOOST_FOREACH(const char ch, buff)
         {
             if (ch == '\n') this->putchar('\r');
@@ -157,6 +158,7 @@ struct x300_uart_iface : uart_iface
     std::vector<boost::uint32_t> _rxcache;
     std::string _rxbuff;
     boost::mutex _read_mutex;
+    boost::mutex _write_mutex;
 };
 
 uart_iface::sptr x300_make_uart_iface(wb_iface::sptr iface)
-- 
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