drivers/input/sermouse/mouse.h

   1 typedef struct _DEVICE_EXTENSION {
   2
   3    PDEVICE_OBJECT DeviceObject;
   4    ULONG InputDataCount;
   5    PMOUSE_INPUT_DATA MouseInputData;
   6    CLASS_INFORMATION ClassInformation;
   7
   8    PKINTERRUPT MouseInterrupt;
   9    KDPC IsrDpc;
  10    KDPC IsrDpcRetry;
  11
  12 } DEVICE_EXTENSION, *PDEVICE_EXTENSION;