MFC:   Check for IFF_DRV_RUNNING in the interrupt loop.
MFC:
  Check for IFF_DRV_RUNNING in the interrupt loop.

  Reported & tested by:   Martin P. Hansen <mph lima.dyndns.dk>

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase