CHB_EXT_STAT 237 drivers/tty/serial/ip22zilog.h #define CHB_EXT_STAT 0x02 CHB_EXT_STAT 332 drivers/tty/serial/pmac_zilog.h #define CHB_EXT_STAT 0x02 CHB_EXT_STAT 241 drivers/tty/serial/sunzilog.h #define CHB_EXT_STAT 0x02