ASYNC_HW_IN_FLOW
async->async_flags |= ASYNC_HW_IN_FLOW;
async->async_flags &= ~ASYNC_HW_IN_FLOW;
flag = (async->async_flags & ASYNC_HW_IN_FLOW) ? 0 : ASY_MCR_RTS;
async->async_flags |= ASYNC_HW_IN_FLOW;
if ((async->async_flags & ASYNC_HW_IN_FLOW) == 0) {
async->async_flags |= ASYNC_HW_IN_FLOW;
if ((async->async_flags & ASYNC_HW_IN_FLOW) &&
async->async_flags &= ~ASYNC_HW_IN_FLOW;
if ((async->async_flags & ASYNC_HW_IN_FLOW) == 0) {
async->async_flags |= ASYNC_HW_IN_FLOW;
if (async->async_flags & ASYNC_HW_IN_FLOW) {
async->async_flags &= ~ASYNC_HW_IN_FLOW;
ASYNC_HW_IN_FLOW) == 0) {
ASYNC_HW_IN_FLOW;
flag = (async->async_flags & ASYNC_HW_IN_FLOW) ? 0 : RTS;