1. 08 Oct, 2002 1 commit
    • Patrick Mochel's avatar
      driver model: and present field to struct device and implement device_unregister(). · c7a01052
      Patrick Mochel authored
      device_unregister() is intended to be the complement of device_register(), and assumes
      most of the functionality of the current put_device(). It should be called by the bus 
      driver when a device is physically removed from the system. 
      
      It should _not_ be called from a driver's remove() method, as that remove() method is called
      via device_detach() in device_unregister(). 
      
      dev->present is used to flag the physical presence of the device. It is set when the device
      is registered, and cleared when unregistered. get_device() checks this flag, and returns
      a NULL pointer if cleared. This prevents anyone from obtaining a reference to a device
      that has been unregistered (removed), but not yet been freed (e.g. if someone else is 
      holding a reference to it).
      
      put_device() BUG()s if dev->present is set. A device should be unregistered before it is 
      freed. This will catch people doing it in the wrong order. 
      c7a01052
  2. 07 Oct, 2002 18 commits
  3. 06 Oct, 2002 5 commits
  4. 07 Oct, 2002 1 commit
  5. 06 Oct, 2002 15 commits