[ 028/101] staging: comedi: das08: fix possible NULL deref during detach

3.6-stable review patch. If anyone has any objections, please let me know. -- From: Ian Abbott commit ee280d134f2e05e0172369a53fbe202dbfc527fa upstream. `das08_detach()` is called by the comedi core to clean up if either `das08_attach()` or `das08_attach_pci()` returns an

[ 028/101] staging: comedi: das08: fix possible NULL deref during detach

3.6-stable review patch. If anyone has any objections, please let me know. -- From: Ian Abbott abbo...@mev.co.uk commit ee280d134f2e05e0172369a53fbe202dbfc527fa upstream. `das08_detach()` is called by the comedi core to clean up if either `das08_attach()` or