[lnst] InterfaceManager: call master deconfiguration just once

[Jiří Pírko]

commit d569cadd4c977b0a0aa44a45cdda81b355182d56
Author: Ondrej Lichtner <olichtne(a)redhat.com&gt;
Date:   Wed Feb 19 11:51:33 2014 +0100

    InterfaceManager: call master deconfiguration just once
    
    When the deconfigure_all method of the InterfaceManager is called we do
    not listen to netlink updates between device deconfigurations. This
    results in the master being deconfigured by each associated slave and
    raising an exception. This commit fixes that.
    
    Signed-off-by: Ondrej Lichtner <olichtne(a)redhat.com&gt;
    Signed-off-by: Jiri Pirko <jiri(a)resnulli.us&gt;

 lnst/Slave/InterfaceManager.py |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)
---
diff --git a/lnst/Slave/InterfaceManager.py b/lnst/Slave/InterfaceManager.py
index 94153ed..c120555 100644
--- a/lnst/Slave/InterfaceManager.py
+++ b/lnst/Slave/InterfaceManager.py
@@ -227,7 +227,8 @@ class Device(object):
     def clear_configuration(self):
         if self._master != None:
             master_dev = self._if_manager.get_device(self._master)
-            master_dev.clear_configuration()
+            if master_dev != None:
+                master_dev.clear_configuration()
 
         if self._conf != None:
             self.down()
@@ -243,7 +244,8 @@ class Device(object):
     def deconfigure(self):
         if self._master != None:
             master_dev = self._if_manager.get_device(self._master)
-            master_dev.deconfigure()
+            if master_dev != None:
+                master_dev.deconfigure()
 
         if self._conf != None and self._configured:
             self._conf.deconfigure()