GPS driver feedback cleanup

src/drivers/gps/gps.cpp

@@ -552,7 +552,7 @@ start(const char *uart_path, bool fake_gps, bool enable_sat_info)
 	fd = open(GPS_DEVICE_PATH, O_RDONLY);
 
 	if (fd < 0) {
-		errx(1, "Could not open device path: %s\n", GPS_DEVICE_PATH);
+		errx(1, "open: %s\n", GPS_DEVICE_PATH);
 		goto fail;
 	}
 
@@ -565,7 +565,7 @@ fail:
 		g_dev = nullptr;
 	}
 
-	errx(1, "driver start failed");
+	errx(1, "start failed");
 }
 
 /**
@@ -604,7 +604,7 @@ reset()
 		err(1, "failed ");
 
 	if (ioctl(fd, SENSORIOCRESET, 0) < 0)
-		err(1, "driver reset failed");
+		err(1, "reset failed");
 
 	exit(0);
 }
@@ -616,7 +616,7 @@ void
 info()
 {
 	if (g_dev == nullptr)
-		errx(1, "driver not running");
+		errx(1, "not running");
 
 	g_dev->print_info();
 

src/drivers/gps/gps_helper.cpp

@@ -1,6 +1,6 @@
 /****************************************************************************
  *
- *   Copyright (c) 2012-2014 PX4 Development Team. All rights reserved.
+ *   Copyright (c) 2012-2015 PX4 Development Team. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ -91,7 +91,7 @@ GPS_Helper::set_baudrate(const int &fd, unsigned baud)
 		warnx("try baudrate: %d\n", speed);
 
 	default:
-		warnx("ERROR: Unsupported baudrate: %d\n", baud);
+		warnx("ERR: baudrate: %d\n", baud);
 		return -EINVAL;
 	}
 
@@ -109,20 +109,19 @@ GPS_Helper::set_baudrate(const int &fd, unsigned baud)
 
 	/* set baud rate */
 	if ((termios_state = cfsetispeed(&uart_config, speed)) < 0) {
-		warnx("ERROR setting config: %d (cfsetispeed)\n", termios_state);
+		warnx("ERR: %d (cfsetispeed)\n", termios_state);
 		return -1;
 	}
 
 	if ((termios_state = cfsetospeed(&uart_config, speed)) < 0) {
-		warnx("ERROR setting config: %d (cfsetospeed)\n", termios_state);
+		warnx("ERR: %d (cfsetospeed)\n", termios_state);
 		return -1;
 	}
 
 	if ((termios_state = tcsetattr(fd, TCSANOW, &uart_config)) < 0) {
-		warnx("ERROR setting baudrate (tcsetattr)\n");
+		warnx("ERR: %d (tcsetattr)\n", termios_state);
 		return -1;
 	}
 
-	/* XXX if resetting the parser here, ensure it does exist (check for null pointer) */
 	return 0;
 }

src/drivers/gps/mtk.cpp

@@ -1,6 +1,6 @@
 /****************************************************************************
  *
- *   Copyright (c) 2012, 2013 PX4 Development Team. All rights reserved.
+ *   Copyright (c) 2012-2015 PX4 Development Team. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ -73,39 +73,38 @@ MTK::configure(unsigned &baudrate)
 
 	/* Write config messages, don't wait for an answer */
 	if (strlen(MTK_OUTPUT_5HZ) != write(_fd, MTK_OUTPUT_5HZ, strlen(MTK_OUTPUT_5HZ))) {
-		warnx("mtk: config write failed");
-		return -1;
+		goto errout;
 	}
 
 	usleep(10000);
 
 	if (strlen(MTK_SET_BINARY) != write(_fd, MTK_SET_BINARY, strlen(MTK_SET_BINARY))) {
-		warnx("mtk: config write failed");
-		return -1;
+		goto errout;
 	}
 
 	usleep(10000);
 
 	if (strlen(SBAS_ON) != write(_fd, SBAS_ON, strlen(SBAS_ON))) {
-		warnx("mtk: config write failed");
-		return -1;
+		goto errout;
 	}
 
 	usleep(10000);
 
 	if (strlen(WAAS_ON) != write(_fd, WAAS_ON, strlen(WAAS_ON))) {
-		warnx("mtk: config write failed");
-		return -1;
+		goto errout;
 	}
 
 	usleep(10000);
 
 	if (strlen(MTK_NAVTHRES_OFF) != write(_fd, MTK_NAVTHRES_OFF, strlen(MTK_NAVTHRES_OFF))) {
-		warnx("mtk: config write failed");
-		return -1;
+		goto errout;
 	}
 
 	return 0;
+
+errout:
+	warnx("mtk: config write failed");
+	return -1;
 }
 
 int
@@ -222,7 +221,6 @@ MTK::parse_char(uint8_t b, gps_mtk_packet_t &packet)
 				ret = 1;
 
 			} else {
-				warnx("MTK Checksum invalid");
 				ret = -1;
 			}
 

src/drivers/gps/ubx.cpp

@@ -1,6 +1,6 @@
 /****************************************************************************
  *
- *   Copyright (c) 2012, 2013, 2014 PX4 Development Team. All rights reserved.
+ *   Copyright (c) 2012-2015 PX4 Development Team. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions