TxN_MASK          820 drivers/tty/serial/ip22zilog.c 	up->curregs[5] &= ~TxN_MASK;
TxN_MASK         1041 drivers/tty/serial/pmac_zilog.c 	uap->curregs[5] &= ~TxN_MASK;
TxN_MASK          885 drivers/tty/serial/sunzilog.c 	up->curregs[R5] &= ~TxN_MASK;