IoDeleteDevice (DeviceObject)的问题!

我在响应     IRP_MN_REMOVE_DEVICE:
一调用　IoDeleteDevice (DeviceObject);
就重启，这是为什么？

Bulk_USB中的一段程序：  
  case IRP_MN_REMOVE_DEVICE:

// The PnP Manager uses this IRP to direct drivers to remove a device.
// For a \"polite\" device removal, the PnP Manager sends an
// IRP_MN_QUERY_REMOVE_DEVICE prior to the remove IRP. In this case,
// the device is in the remove-pending state when the remove IRP arrives.
// For a surprise-style device removal ( i.e. sudden cord yank ),
// the physical device has already been removed and the PnP Manager may not
//  have sent IRP_MN_SURPRISE_REMOVAL. A device can be in any state
// when it receives a remove IRP as a result of a surprise-style removal.

        // match the inc at the begining of the dispatch routine
        BulkUsb_DecrementIoCount(DeviceObject);

//
        // Once DeviceRemoved is set no new IOCTL or read/write irps will be passed
        // down the stack to lower drivers; all will be quickly failed
//
        deviceExtension->DeviceRemoved = TRUE;

// Cancel any pending io requests; we may not have gotten a query first!
BulkUsb_CancelPendingIo( DeviceObject );

// If any pipes are still open, call USBD with URB_FUNCTION_ABORT_PIPE
// This call will also close the pipes; if any user close calls get through,
// they will be noops
BulkUsb_AbortPipes( DeviceObject );

// We don\'t explicitly wait for the below driver to complete, but just make
// the call and go on, finishing cleanup
        IoCopyCurrentIrpStackLocationToNext(Irp);

        ntStatus = IoCallDriver(stackDeviceObject,
                                Irp);
        //
        // The final decrement to device extension PendingIoCount == 0
// will set deviceExtension->RemoveEvent, enabling device removal.
// If there is no pending IO at this point, the below decrement will be it.
        //
        BulkUsb_DecrementIoCount(DeviceObject);


        // wait for any io request pending in our driver to
        // complete for finishing the remove

        KeWaitForSingleObject(
                    &deviceExtension->RemoveEvent,
                    Suspended,
                    KernelMode,
                    FALSE,
                    NULL);

        //
        // Delete the link and FDO we created
        //
        BulkUsb_RemoveDevice(DeviceObject);


        BULKUSB_KdPrint( DBGLVL_DEFAULT,(\"BulkUsb_ProcessPnPIrp() Detaching from %08X\\n\",
                         deviceExtension->TopOfStackDeviceObject));

        IoDetachDevice(deviceExtension->TopOfStackDeviceObject);

        BULKUSB_KdPrint( DBGLVL_DEFAULT,(\"BulkUsb_ProcessPnPIrp() Deleting %08X\\n\",
                         DeviceObject));

        IoDeleteDevice (DeviceObject);

        return ntStatus; // end, case IRP_MN_REMOVE_DEVICE

我也想知道

在哪儿我怎么没找到呀！！！

你看看DeviceObject值对不对？
建议你参看DDK里的相应处理例程。