WILC_INVALID_CHANNEL
wl->sta_ch = WILC_INVALID_CHANNEL;
wl->sta_ch = WILC_INVALID_CHANNEL;
vif->wilc->sta_ch = WILC_INVALID_CHANNEL;
wilc->sta_ch = WILC_INVALID_CHANNEL;
if (sta_ch == WILC_INVALID_CHANNEL)