Hi,
I can’t find out why I get USBD_STATUS_BUFFER_UNDERRUN result. When I call
IoSetCompletionRoutine routine the Completion Routine is called immediately
before I call IoCallDriver (before I send the IRP down the stack). And the
ntState in Irp->IoStatus.Status is filled in USBD_STATUS_BUFFER_UNDERRUN
error.
thanx in advance.
Jan