Fixed a possible race condition in cDevice::Action()

CONTRIBUTORS

@@ -1160,6 +1160,7 @@ Lucian Muresan <lucianm@users.sourceforge.net>
 Mattias Grönlund <Mattias@Gronlund.net>
  for pointing out a missing cleanup at program exit in case there is a problem
  with a plugin
+ for fixing possible race condition in cDevice::Action()
 
 Uwe Hanke <uhanke@gmx.de>
  for fixing some typos in the Makefile's 'font' target

HISTORY

@@ -3275,3 +3275,4 @@ Video Disk Recorder Revision History
   Currently there is no visual indicator of the audio channel, yet, and it
   doesn't work with the selected audio languages. It also doesn't appear to
   work with some DVB cards (esp. the Siemens DVB-S Rev 1.3).
+- Fixed a possible race condition in cDevice::Action() (thanks to Mattias Grönlund).

device.c

@@ -4,7 +4,7 @@
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: device.c 1.69 2005/01/06 14:56:08 kls Exp $
+ * $Id: device.c 1.70 2005/01/06 16:45:12 kls Exp $
  */
 
 #include "device.h"
@@ -976,8 +976,8 @@ bool cDevice::Receiving(bool CheckAny) const
 
 void cDevice::Action(void)
 {
-  if (OpenDvr()) {
   active = true;
+  if (OpenDvr()) {
      for (; active;) {
          // Read data from the DVR device:
          uchar *b = NULL;