From 3f961bf3c60c3ea380dc1dc62684a026667ec0e9 Mon Sep 17 00:00:00 2001
From: Pavel Kirienko <pavel.kirienko@gmail.com>
Date: Thu, 23 Apr 2015 22:02:34 +0300
Subject: UAVCAN driver silently ignores repeated start commands without error.
 This allows to avoid error messages when UAVCAN driver is started from extras
 script before default initialization sequence is executed.

---
 src/modules/uavcan/uavcan_main.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/modules/uavcan/uavcan_main.cpp b/src/modules/uavcan/uavcan_main.cpp
index 2d5abf959..f04ab9f17 100644
--- a/src/modules/uavcan/uavcan_main.cpp
+++ b/src/modules/uavcan/uavcan_main.cpp
@@ -698,7 +698,9 @@ int uavcan_main(int argc, char *argv[])
 
 	if (!std::strcmp(argv[1], "start")) {
 		if (UavcanNode::instance()) {
-			errx(1, "already started");
+			// Already running, no error
+			warnx("already started");
+			::exit(0);
 		}
 
 		// Node ID
-- 
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