lower_20_sb      1553 drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy/phy_cmn.c 		target_chan = lower_20_sb(CHSPEC_CHANNEL(chspec));
lower_20_sb       132 drivers/net/wireless/broadcom/brcm80211/include/brcmu_wifi.h 	(lower_20_sb(((chspec) & WL_CHANSPEC_CHAN_MASK))) : \