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## Through application which has opened the device

  Forum: Device Drivers
  Re: Device Driver notification of "Linux going down" (Stan Troeh)
  Keywords: device drivers shutdown modules init watchdog
  Date: Wed, 14 Aug 1996 04:55:38 GMT
  From: Michael K. Johnson <johnsonm@redhat.com>

In order to shut down a device, have a user-level application have it opened, and when it is sent SIGTERM by init (or, presumably, any other process), close the device or alert it of the shutdown in some other way.