ZS_CLEARSTAT      272 drivers/tty/serial/ip22zilog.h #define ZS_CLEARSTAT(channel)   do { writeb(RES_EXT_INT, &channel->control); \
ZS_CLEARSTAT      280 drivers/tty/serial/sunzilog.h #define ZS_CLEARSTAT(channel)   do { sbus_writeb(RES_EXT_INT, &channel->control); \