no more segfault when frontend device is busy

diff --git a/lib/dvb/frontend.cpp b/lib/dvb/frontend.cpp
index e3bd5bc68b6d70b67c99d91316186f1861653340..e495b1c5a079f4afe0c9d7a92a18dfd3bc72c5d6 100644 (file)
--- a/lib/dvb/frontend.cpp
+++ b/lib/dvb/frontend.cpp
@@ -1680,6 +1680,12 @@ RESULT eDVBFrontend::tune(const iDVBFrontendParameters &where)
 
        int res=0;
 
 
        int res=0;
 

+       if (!m_sn)
+       {
+               eDebug("no frontend device opened... do not try to tune !!!");
+               return -ENODEV;
+       }
+

        if (m_type == -1)
                return -ENODEV;
 
        if (m_type == -1)
                return -ENODEV;