From 843d5656bd63cb651945139fe1a758398ec5e7d0 Mon Sep 17 00:00:00 2001
From: Andrzej Kapolka <drzej.k@gmail.com>
Date: Tue, 3 Sep 2013 10:45:33 -0700
Subject: [PATCH] Fix for compile warnings on Linux: check return values on
 read/write.

---
 interface/src/SerialInterface.cpp | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/interface/src/SerialInterface.cpp b/interface/src/SerialInterface.cpp
index d9c1bd928f..4082bc87ef 100644
--- a/interface/src/SerialInterface.cpp
+++ b/interface/src/SerialInterface.cpp
@@ -125,9 +125,15 @@ void SerialInterface::initializePort(char* portname) {
         tcflush(_serialDescriptor, TCIOFLUSH);
         
         // this disables streaming so there's no garbage data on reads
-        write(_serialDescriptor, "SD\n", 3);
+        if (write(_serialDescriptor, "SD\n", 3) != 3) {
+            qDebug("Failed.\n");
+            return;
+        }
         char result[4];
-        read(_serialDescriptor, result, 4);
+        if (read(_serialDescriptor, result, 4) != 4) {
+            qDebug("Failed.\n");
+            return;
+        }
         
         tty_set_file_descriptor(_serialDescriptor);
         mpu_init(0);