reactos/drivers/input/kbdclass/misc.c

   1 /*
   2  * COPYRIGHT:       See COPYING in the top level directory
   3  * PROJECT:         ReactOS Keyboard class driver
   4  * FILE:            drivers/input/kbdclass/misc.c
   5  * PURPOSE:         Misceallenous operations
   6  *
   7  * PROGRAMMERS:     Hervé Poussineau (hpoussin@reactos.org)
   8  */
   9
  10 #define NDEBUG
  11 #include <debug.h>
  12
  13 #include "kbdclass.h"
  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;
  32         KEVENT Event;
  33         NTSTATUS Status;
  34
  35         ASSERT(!((PCOMMON_DEVICE_EXTENSION)DeviceObject->DeviceExtension)->IsClassDO);
  36         LowerDevice = ((PPORT_DEVICE_EXTENSION)DeviceObject->DeviceExtension)->LowerDevice;
  37
  38         KeInitializeEvent(&Event, NotificationEvent, FALSE);
  39         IoCopyCurrentIrpStackLocationToNext(Irp);
  40
  41         DPRINT("Calling lower device %p [%wZ]\n", LowerDevice, &LowerDevice->DriverObject->DriverName);
  42         IoSetCompletionRoutine(Irp, ForwardIrpAndWaitCompletion, &Event, TRUE, TRUE, TRUE);
  43
  44         Status = IoCallDriver(LowerDevice, Irp);
  45         if (Status == STATUS_PENDING)
  46         {
  47                 Status = KeWaitForSingleObject(&Event, Suspended, KernelMode, FALSE, NULL);
  48                 if (NT_SUCCESS(Status))
  49                         Status = Irp->IoStatus.Status;
  50         }
  51
  52         return Status;
  53 }
  54
  55 NTSTATUS NTAPI
  56 ForwardIrpAndForget(
  57         IN PDEVICE_OBJECT DeviceObject,
  58         IN PIRP Irp)
  59 {
  60         PDEVICE_OBJECT LowerDevice;
  61
  62         ASSERT(!((PCOMMON_DEVICE_EXTENSION)DeviceObject->DeviceExtension)->IsClassDO);
  63         LowerDevice = ((PPORT_DEVICE_EXTENSION)DeviceObject->DeviceExtension)->LowerDevice;
  64
  65         IoSkipCurrentIrpStackLocation(Irp);
  66         return IoCallDriver(LowerDevice, Irp);
  67 }