drivers/input/sermouse/misc.c

   1 /*
   2  * PROJECT:     ReactOS Serial mouse driver
   3  * LICENSE:     GPL - See COPYING in the top level directory
   4  * FILE:        drivers/input/sermouse/fdo.c
   5  * PURPOSE:     Miscellaneous operations
   6  * PROGRAMMERS: Copyright 2005-2006 Hervé Poussineau (hpoussin@reactos.org)
   7  */
   8
   9 #include "sermouse.h"
  10
  11 #include <debug.h>
  12
  13 static IO_COMPLETION_ROUTINE ForwardIrpAndWaitCompletion;
  14
  15 static NTSTATUS NTAPI
  16 ForwardIrpAndWaitCompletion(
  17         IN PDEVICE_OBJECT DeviceObject,
  18         IN PIRP Irp,
  19         IN PVOID Context)
  20 {
  21         if (Irp->PendingReturned)
  22                 KeSetEvent((PKEVENT)Context, IO_NO_INCREMENT, FALSE);
  23         return STATUS_MORE_PROCESSING_REQUIRED;
  24 }
  25
  26 NTSTATUS
  27 ForwardIrpAndWait(
  28         IN PDEVICE_OBJECT DeviceObject,
  29         IN PIRP Irp)
  30 {
  31         PDEVICE_OBJECT LowerDevice = ((PSERMOUSE_DEVICE_EXTENSION)DeviceObject->DeviceExtension)->LowerDevice;
  32         KEVENT Event;
  33         NTSTATUS Status;
  34
  35         KeInitializeEvent(&Event, NotificationEvent, FALSE);
  36         IoCopyCurrentIrpStackLocationToNext(Irp);
  37
  38         TRACE_(SERMOUSE, "Calling lower device %p\n", LowerDevice);
  39         IoSetCompletionRoutine(Irp, ForwardIrpAndWaitCompletion, &Event, TRUE, TRUE, TRUE);
  40
  41         Status = IoCallDriver(LowerDevice, Irp);
  42         if (Status == STATUS_PENDING)
  43         {
  44                 Status = KeWaitForSingleObject(&Event, Suspended, KernelMode, FALSE, NULL);
  45                 if (NT_SUCCESS(Status))
  46                         Status = Irp->IoStatus.Status;
  47         }
  48
  49         return Status;
  50 }
  51
  52 NTSTATUS NTAPI
  53 ForwardIrpAndForget(
  54         IN PDEVICE_OBJECT DeviceObject,
  55         IN PIRP Irp)
  56 {
  57         PDEVICE_OBJECT LowerDevice = ((PSERMOUSE_DEVICE_EXTENSION)DeviceObject->DeviceExtension)->LowerDevice;
  58
  59         IoSkipCurrentIrpStackLocation(Irp);
  60         return IoCallDriver(LowerDevice, Irp);
  61 }