CHANNEL_B
#define IS_CHAN_B(_c) ((_c)->chanmode == CHANNEL_B)
case CHANNEL_B:
case CHANNEL_B:
else if (chan->chanmode == CHANNEL_B)
channel_mode = CHANNEL_B;
else if ((cm->flags & CHANNEL_ALL) == CHANNEL_B)
{ATH9K_MODE_11B, CHANNEL_B},
CHANNEL_B, /* IEEE80211_MODE_11B */