ZS_CLEARFIFO      275 drivers/tty/serial/ip22zilog.h #define ZS_CLEARFIFO(channel)   do { readb(&channel->data); \
ZS_CLEARFIFO      365 drivers/tty/serial/pmac_zilog.h #define ZS_CLEARFIFO(port)   do { volatile unsigned char garbage; \
ZS_CLEARFIFO      283 drivers/tty/serial/sunzilog.h #define ZS_CLEARFIFO(channel)   do { sbus_readb(&channel->data); \