我在w2k下为非PnP串口设备Smart Card Reader写驱动,有些问题想请教！

[shen_q]

我使用的是DDK，根据BULL TPL3的例子改动一下
处理IRP_MN_START_DEVICE时有如下代码：
irp = IoAllocateIrp(
(CCHAR) (DeviceObject->StackSize + 1),
FALSE
);

ASSERT(irp != NULL);

if (irp == NULL) {

return STATUS_NO_MEMORY;
}

irp->UserIosb = &ioStatusBlock;
IoSetNextIrpStackLocation(irp);
irpStack = IoGetCurrentIrpStackLocation(irp);

irpStack->MajorFunction = IRP_MJ_CREATE;
irpStack->Parameters.Create.Options = 0;
irpStack->Parameters.Create.ShareAccess = 0;
irpStack->Parameters.Create.FileAttributes = 0;
irpStack->Parameters.Create.EaLength = 0;

status = IoCallDriver(DeviceObject, irp);

返回 STATUS_INVALID_DEVICE_REQUEST 0xC0000010L
不只是何原因？