drivers/usb/usbehci_new/misc.cpp

   1 /*
   2  * PROJECT:     ReactOS Universal Serial Bus Bulk Enhanced Host Controller Interface
   3  * LICENSE:     GPL - See COPYING in the top level directory
   4  * FILE:        drivers/usb/usbehci/misc.cpp
   5  * PURPOSE:     USB EHCI device driver.
   6  * PROGRAMMERS:
   7  *              Michael Martin (michael.martin@reactos.org)
   8  *              Johannes Anderwald (johannes.anderwald@reactos.org)
   9  */
  10
  11 #include "usbehci.h"
  12
  13 //
  14 // driver verifier
  15 //
  16 IO_COMPLETION_ROUTINE SyncForwardIrpCompletionRoutine;
  17
  18 NTSTATUS
  19 NTAPI
  20 SyncForwardIrpCompletionRoutine(
  21     PDEVICE_OBJECT DeviceObject,
  22     PIRP Irp,
  23     PVOID Context)
  24 {
  25     if (Irp->PendingReturned)
  26     {
  27         KeSetEvent((PKEVENT)Context, IO_NO_INCREMENT, FALSE);
  28     }
  29     return STATUS_MORE_PROCESSING_REQUIRED;
  30 }
  31
  32 NTSTATUS
  33 NTAPI
  34 SyncForwardIrp(PDEVICE_OBJECT DeviceObject, PIRP Irp)
  35 {
  36     KEVENT Event;
  37     NTSTATUS Status;
  38
  39     //
  40     // initialize event
  41     //
  42     KeInitializeEvent(&Event, NotificationEvent, FALSE);
  43
  44     //
  45     // copy irp stack location
  46     //
  47     IoCopyCurrentIrpStackLocationToNext(Irp);
  48
  49     //
  50     // set completion routine
  51     //
  52     IoSetCompletionRoutine(Irp, SyncForwardIrpCompletionRoutine, &Event, TRUE, TRUE, TRUE);
  53
  54
  55     //
  56     // call driver
  57     //
  58     Status = IoCallDriver(DeviceObject, Irp);
  59
  60
  61     //
  62     // check if pending
  63     //
  64     if (Status == STATUS_PENDING)
  65     {
  66         //
  67         // wait for the request to finish
  68         //
  69         KeWaitForSingleObject(&Event, Executive, KernelMode, FALSE, NULL);
  70
  71         //
  72         // copy status code
  73         //
  74         Status = Irp->IoStatus.Status;
  75     }
  76
  77     //
  78     // done
  79     //
  80     return Status;
  81 }
  82