FER
ns87303_modify(config, FER, FER_EDM, 0);
__le32 FER; /* 0x100 */
if (c & FER) {
port->read_status_mask = FER | PER;
#define RX_FIFO_INTS (RXFAF | RXFF | RXOVER | PER | FER | RXTOUT)