From 8bc1a9009e28f86ccb04df436ad1ccd4c4c78249 Mon Sep 17 00:00:00 2001
From: Kalle Vahlman <kalle.vahlman@movial.com>
Date: Fri, 16 Sep 2011 08:05:51 +0300
Subject: Return when we can't open the USB device

Most commonly this means insufficent permissions (ie. for got to use sudo).
---
 riff/main.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/riff/main.cpp b/riff/main.cpp
index 5ce8e65..803ebe7 100644
--- a/riff/main.cpp
+++ b/riff/main.cpp
@@ -131,6 +131,10 @@ void UsbDeviceEventCallback(DeviceStatus_t status, DeviceEvent_t event, Device_t
             logger_->log(Logger::ERROR, "Unknown USB event %d", event);
             break;
         }
+    } else if (COMM_DEVICE_LIBUSB_FAILED_TO_OPEN_PORT == status) {
+        logger_->log(Logger::ERROR, "Cannot open USB device. Are you root?", status);
+        isDone = true;
+        exitstatus = 1;
     } else {
         logger_->log(Logger::ERROR, "USB device error %d", status);
     }
-- 
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