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