UART_STATUS_FE
else if (rsr & UART_STATUS_FE)
port->read_status_mask |= UART_STATUS_FE | UART_STATUS_PE;
port->ignore_status_mask |= UART_STATUS_FE | UART_STATUS_PE;
rsr &= ~(UART_STATUS_FE | UART_STATUS_PE);
} else if (rsr & UART_STATUS_FE) {