UPF_HARD_FLOW
up.port.flags = UPF_FIXED_PORT | UPF_FIXED_TYPE | UPF_SOFT_FLOW | UPF_HARD_FLOW;
if (termios->c_cflag & CRTSCTS && port->flags & UPF_HARD_FLOW &&
up->port.flags |= UPF_HARD_FLOW;
up->port.flags &= ~UPF_HARD_FLOW;
if (port->flags & UPF_HARD_FLOW)
port->flags |= UPF_HARD_FLOW;
up->port.flags |= UPF_SOFT_FLOW | UPF_HARD_FLOW;
if (termios->c_cflag & CRTSCTS && up->port.flags & UPF_HARD_FLOW) {
if ((port->flags & UPF_HARD_FLOW) && (termios->c_cflag & CRTSCTS)) {
if ((port->flags & UPF_HARD_FLOW) &&
if (port->flags & UPF_HARD_FLOW) {
sciport->port.flags |= UPF_HARD_FLOW;