From f4f0b38f733c89929b2d108163ae5ca21719f07c Mon Sep 17 00:00:00 2001
From: Romuald Conty <romuald@libnfc.org>
Date: Wed, 20 Apr 2011 14:03:41 +0000
Subject: [PATCH] Put a comment on tcflush(), it does not produce the attempted
 effect. ie. there are remaining bytes from old connections.

---
 libnfc/buses/uart_posix.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/libnfc/buses/uart_posix.c b/libnfc/buses/uart_posix.c
index facef9e..c45afe9 100644
--- a/libnfc/buses/uart_posix.c
+++ b/libnfc/buses/uart_posix.c
@@ -100,12 +100,13 @@ uart_open (const char *pcPortName)
   sp->tiNew.c_cc[VMIN] = 0;     // block until n bytes are received
   sp->tiNew.c_cc[VTIME] = 0;    // block until a timer expires (n * 100 mSec.)
 
+  // This line seems to produce absolutely no effect on my system (GNU/Linux 2.6.35)
+  tcflush (sp->fd, TCIFLUSH);
+
   if (tcsetattr (sp->fd, TCSANOW, &sp->tiNew) == -1) {
     uart_close (sp);
     return INVALID_SERIAL_PORT;
   }
-
-  tcflush (sp->fd, TCIFLUSH);
   return sp;
 }