- struct ieee80211_channel *curchan = hw->conf.chandef.chan;
- int pos = curchan->hw_value;
- int old_pos = -1;
- unsigned long flags;
-
- if (ah->curchan)
- old_pos = ah->curchan - &ah->channels[0];
-
- ath_dbg(common, CONFIG, "Set channel: %d MHz width: %d\n",
- curchan->center_freq, hw->conf.chandef.width);
-
- /* update survey stats for the old channel before switching */
- spin_lock_irqsave(&common->cc_lock, flags);
- ath_update_survey_stats(sc);
- spin_unlock_irqrestore(&common->cc_lock, flags);
-
- ath9k_cmn_get_channel(hw, ah, &conf->chandef);
-
- /*
- * If the operating channel changes, change the survey in-use flags
- * along with it.
- * Reset the survey data for the new channel, unless we're switching
- * back to the operating channel from an off-channel operation.
- */
- if (!(hw->conf.flags & IEEE80211_CONF_OFFCHANNEL) &&
- sc->cur_survey != &sc->survey[pos]) {
-
- if (sc->cur_survey)
- sc->cur_survey->filled &= ~SURVEY_INFO_IN_USE;
-
- sc->cur_survey = &sc->survey[pos];
-
- memset(sc->cur_survey, 0, sizeof(struct survey_info));
- sc->cur_survey->filled |= SURVEY_INFO_IN_USE;
- } else if (!(sc->survey[pos].filled & SURVEY_INFO_IN_USE)) {
- memset(&sc->survey[pos], 0, sizeof(struct survey_info));
- }
-
- if (ath_set_channel(sc, hw, &sc->sc_ah->channels[pos]) < 0) {