_CH_SWTICH_ANNOUNCE_  373 drivers/staging/rtl8188eu/include/wifi.h #define _CH_SWTICH_ANNOUNCE_	37	/* Secondary Channel Offset */
_CH_SWTICH_ANNOUNCE_  485 drivers/staging/rtl8723bs/include/wifi.h #define _CH_SWTICH_ANNOUNCE_	37	/* Secondary Channel Offset */