Symbol: LOOPBAK
drivers/tty/serial/pmac_zilog.c
766
write_zsreg(uap, 14, (LOOPBAK | BRSRC));
drivers/tty/serial/pmac_zilog.c
767
write_zsreg(uap, 14, (LOOPBAK | BRSRC | BRENAB));
drivers/tty/serial/zs.c
409
newloop |= LOOPBAK;
drivers/tty/serial/zs.c
411
newloop &= ~LOOPBAK;