ccf0 2995 net/mac80211/util.c int ccf0, ccf1; ccf0 3019 net/mac80211/util.c ccf0 = ccfs0; ccf0 3024 net/mac80211/util.c cf0 = ieee80211_channel_to_frequency(ccf0, chandef->chan->band); ccf0 3038 net/mac80211/util.c diff = abs(ccf1 - ccf0);