From f29b5afe645b99efc6346769a7a4a23f6e8fc644 Mon Sep 17 00:00:00 2001
From: Carles Fernandez <carles.fernandez@gmail.com>
Date: Sat, 23 May 2015 11:24:18 +0200
Subject: [PATCH] checking error

---
 src/algorithms/PVT/libs/nmea_printer.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/algorithms/PVT/libs/nmea_printer.cc b/src/algorithms/PVT/libs/nmea_printer.cc
index 617e61438..1274a9e24 100644
--- a/src/algorithms/PVT/libs/nmea_printer.cc
+++ b/src/algorithms/PVT/libs/nmea_printer.cc
@@ -101,7 +101,7 @@ int Nmea_Printer::init_serial (std::string serial_device)
     fd = open(serial_device.c_str(), O_RDWR | O_NOCTTY | O_NDELAY);
     if (fd == -1) return fd; //failed to open TTY port
 
-    fcntl(fd, F_SETFL, 0);    // clear all flags on descriptor, enable direct I/O
+    if(fcntl(fd, F_SETFL, 0) == -1) LOG(INFO) << "Error enabling direct I/O";   // clear all flags on descriptor, enable direct I/O
     tcgetattr(fd, &options);   // read serial port options
 
     BAUD  = B9600;