CyRxData         1310 drivers/tty/cyclades.c 		cyy_writeb(info, CySRER, cyy_readb(info, CySRER) | CyRxData);
CyRxData         1709 drivers/tty/cyclades.c 		cyy_writeb(info, CySRER, cyy_readb(info, CySRER) & ~CyRxData);