ath9k: Fix "cc_lock" usage

IRQ save/restore is not required for the cycle counters
since they are accessed only from softirq and process context.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/drivers/net/wireless/ath/ath9k/link.c b/drivers/net/wireless/ath/ath9k/link.c
index c92ca81..30dcef5 100644 (file)
--- a/drivers/net/wireless/ath/ath9k/link.c
+++ b/drivers/net/wireless/ath/ath9k/link.c
@@ -362,10 +362,10 @@ void ath_ani_calibrate(unsigned long data)
 
        /* Call ANI routine if necessary */
        if (aniflag) {
-               spin_lock_irqsave(&common->cc_lock, flags);
+               spin_lock(&common->cc_lock);
                ath9k_hw_ani_monitor(ah, ah->curchan);
                ath_update_survey_stats(sc);
-               spin_unlock_irqrestore(&common->cc_lock, flags);
+               spin_unlock(&common->cc_lock);
        }
 
        /* Perform calibration if necessary */

diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c
index 0d73080..5aaf0f9 100644 (file)
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -330,7 +330,6 @@ static int ath_set_channel(struct ath_softc *sc, struct cfg80211_chan_def *chand
        struct ieee80211_hw *hw = sc->hw;
        struct ath9k_channel *hchan;
        struct ieee80211_channel *chan = chandef->chan;
-       unsigned long flags;
        bool offchannel;
        int pos = chan->hw_value;
        int old_pos = -1;
@@ -348,9 +347,9 @@ static int ath_set_channel(struct ath_softc *sc, struct cfg80211_chan_def *chand
                chan->center_freq, chandef->width);
 
        /* update survey stats for the old channel before switching */
-       spin_lock_irqsave(&common->cc_lock, flags);
+       spin_lock_bh(&common->cc_lock);
        ath_update_survey_stats(sc);
-       spin_unlock_irqrestore(&common->cc_lock, flags);
+       spin_unlock_bh(&common->cc_lock);
 
        ath9k_cmn_get_channel(hw, ah, chandef);
 
@@ -1788,13 +1787,12 @@ static int ath9k_get_survey(struct ieee80211_hw *hw, int idx,
        struct ath_common *common = ath9k_hw_common(sc->sc_ah);
        struct ieee80211_supported_band *sband;
        struct ieee80211_channel *chan;
-       unsigned long flags;
        int pos;
 
        if (config_enabled(CONFIG_ATH9K_TX99))
                return -EOPNOTSUPP;
 
-       spin_lock_irqsave(&common->cc_lock, flags);
+       spin_lock_bh(&common->cc_lock);
        if (idx == 0)
                ath_update_survey_stats(sc);
 
@@ -1808,7 +1806,7 @@ static int ath9k_get_survey(struct ieee80211_hw *hw, int idx,
                sband = hw->wiphy->bands[IEEE80211_BAND_5GHZ];
 
        if (!sband || idx >= sband->n_channels) {
-               spin_unlock_irqrestore(&common->cc_lock, flags);
+               spin_unlock_bh(&common->cc_lock);
                return -ENOENT;
        }
 
@@ -1816,7 +1814,7 @@ static int ath9k_get_survey(struct ieee80211_hw *hw, int idx,
        pos = chan->hw_value;
        memcpy(survey, &sc->survey[pos], sizeof(*survey));
        survey->channel = chan;
-       spin_unlock_irqrestore(&common->cc_lock, flags);
+       spin_unlock_bh(&common->cc_lock);
 
        return 0;
 }