From 42a3c0412aff03be1f6a37e6294b389b10e233f2 Mon Sep 17 00:00:00 2001
From: Dan Newman <dan.newman@mtbaldy.us>
Date: Sat, 30 May 2015 16:29:43 -0700
Subject: [PATCH] Missing return 1 in gpx_sio_open().  Remove exit() calls in
 gpx_sio_open() and match style of gpx_sio_open() in winsio.c by returning 0
 for errors rathern then exit() for errors.

---
 src/gpx/gpx-main.c | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/src/gpx/gpx-main.c b/src/gpx/gpx-main.c
index 1f4aea2..43de5e2 100644
--- a/src/gpx/gpx-main.c
+++ b/src/gpx/gpx-main.c
@@ -220,17 +220,17 @@ int gpx_sio_open(Gpx *gpx, const char *filename, speed_t baud_rate,
     // open and configure the serial port
     if((port = open(filename, O_RDWR | O_NOCTTY | O_NONBLOCK)) < 0) {
         perror("Error opening port");
-        exit(-1);
+	return 0;
     }
 
     if(fcntl(port, F_SETFL, O_RDWR) < 0) {
         perror("Setting port descriptor flags");
-        exit(-1);
+	return 0;
     }
 
     if(tcgetattr(port, &tp) < 0) {
         perror("Error getting port attributes");
-        exit(-1);
+	return 0;
     }
 
     cfmakeraw(&tp);
@@ -275,18 +275,20 @@ int gpx_sio_open(Gpx *gpx, const char *filename, speed_t baud_rate,
 
     if(tcsetattr(port, TCSANOW, &tp) < 0) {
         perror("Error setting port attributes");
-        exit(-1);
+	return 0;
     }
 
     sleep(2);
     if(tcflush(port, TCIOFLUSH) < 0) {
         perror("Error flushing port");
-        exit(-1);
+	return 0;
     }
 
     if(gpx->flag.verboseMode) fprintf(gpx->log, "Communicating via: %s" EOL, filename);
     if(sio_port)
 	 *sio_port = port;
+
+    return 1;
 }
 #endif