ath9k: fix a soft lockup on smp systems

Backport of r35152

git-svn-id: svn://svn.openwrt.org/openwrt/branches/attitude_adjustment@35153 3c298f89-4303-0410-b956-a3cf2f4a3e73

7 files changed, 30 insertions, 24 deletions

diff --git a/package/mac80211/patches/300-pending_work.patch b/package/mac80211/patches/300-pending_work.patch
index c0240ad01e..69c32b8760 100644
--- a/package/mac80211/patches/300-pending_work.patch
+++ b/package/mac80211/patches/300-pending_work.patch
@@ -1269,15 +1269,7 @@
  {
  	struct ath_hw *ah = sc->sc_ah;
  	bool ret = true;
-@@ -195,19 +195,15 @@ static bool ath_prepare_reset(struct ath
- 	ath9k_debug_samp_bb_mac(sc);
- 	ath9k_hw_disable_interrupts(ah);
- 
-+	tasklet_disable(&sc->intr_tq);
-+
- 	if (!ath_stoprecv(sc))
- 		ret = false;
- 
+@@ -201,14 +201,6 @@ static bool ath_prepare_reset(struct ath
  	if (!ath_drain_all_txq(sc, retry_tx))
  		ret = false;
  
@@ -1288,11 +1280,11 @@
 -	} else {
 -		ath_flushrecv(sc);
 -	}
-+	tasklet_enable(&sc->intr_tq);
- 
+-
  	return ret;
  }
-@@ -261,7 +257,6 @@ static int ath_reset_internal(struct ath
+ 
+@@ -261,11 +253,11 @@ static int ath_reset_internal(struct ath
  	struct ath_common *common = ath9k_hw_common(ah);
  	struct ath9k_hw_cal_data *caldata = NULL;
  	bool fastcc = true;
@@ -1300,7 +1292,12 @@
  	int r;
  
  	__ath_cancel_work(sc);
-@@ -275,11 +270,10 @@ static int ath_reset_internal(struct ath
+ 
++	tasklet_disable(&sc->intr_tq);
+ 	spin_lock_bh(&sc->sc_pcu_lock);
+ 
+ 	if (!(sc->hw->conf.flags & IEEE80211_CONF_OFFCHANNEL)) {
+@@ -275,11 +267,10 @@ static int ath_reset_internal(struct ath
  
  	if (!hchan) {
  		fastcc = false;
@@ -1313,7 +1310,16 @@
  		fastcc = false;
  
  	ath_dbg(common, CONFIG, "Reset to %u MHz, HT40: %d fastcc: %d\n",
-@@ -821,7 +815,7 @@ static void ath9k_stop(struct ieee80211_
+@@ -297,6 +288,8 @@ static int ath_reset_internal(struct ath
+ 
+ out:
+ 	spin_unlock_bh(&sc->sc_pcu_lock);
++	tasklet_enable(&sc->intr_tq);
++
+ 	return r;
+ }
+ 
+@@ -821,7 +814,7 @@ static void ath9k_stop(struct ieee80211_
  		ath9k_hw_cfg_gpio_input(ah, ah->led_pin);
  	}
  
diff --git a/package/mac80211/patches/512-ath9k_channelbw_debugfs.patch b/package/mac80211/patches/512-ath9k_channelbw_debugfs.patch
index db6d36b68e..15111e9b82 100644
--- a/package/mac80211/patches/512-ath9k_channelbw_debugfs.patch
+++ b/package/mac80211/patches/512-ath9k_channelbw_debugfs.patch
@@ -80,7 +80,7 @@
  }
 --- a/drivers/net/wireless/ath/ath9k/main.c
 +++ b/drivers/net/wireless/ath/ath9k/main.c
-@@ -1121,7 +1121,7 @@ static void ath9k_disable_ps(struct ath_
+@@ -1120,7 +1120,7 @@ static void ath9k_disable_ps(struct ath_
  	ath_dbg(common, PS, "PowerSave disabled\n");
  }
  
@@ -89,7 +89,7 @@
  {
  	struct ath_softc *sc = hw->priv;
  	struct ath_hw *ah = sc->sc_ah;
-@@ -1175,9 +1175,11 @@ static int ath9k_config(struct ieee80211
+@@ -1174,9 +1174,11 @@ static int ath9k_config(struct ieee80211
  
  	if ((changed & IEEE80211_CONF_CHANGE_CHANNEL) || reset_channel) {
  		struct ieee80211_channel *curchan = hw->conf.channel;
@@ -101,7 +101,7 @@
  
  		if (ah->curchan)
  			old_pos = ah->curchan - &ah->channels[0];
-@@ -1220,7 +1222,23 @@ static int ath9k_config(struct ieee80211
+@@ -1219,7 +1221,23 @@ static int ath9k_config(struct ieee80211
  			memset(&sc->survey[pos], 0, sizeof(struct survey_info));
  		}
  
diff --git a/package/mac80211/patches/521-ath9k_cur_txpower.patch b/package/mac80211/patches/521-ath9k_cur_txpower.patch
index d740332de3..14b59e58e7 100644
--- a/package/mac80211/patches/521-ath9k_cur_txpower.patch
+++ b/package/mac80211/patches/521-ath9k_cur_txpower.patch
@@ -1,6 +1,6 @@
 --- a/drivers/net/wireless/ath/ath9k/main.c
 +++ b/drivers/net/wireless/ath/ath9k/main.c
-@@ -1245,6 +1245,8 @@ int ath9k_config(struct ieee80211_hw *hw
+@@ -1244,6 +1244,8 @@ int ath9k_config(struct ieee80211_hw *hw
  			return -EINVAL;
  		}
  
@@ -9,7 +9,7 @@
  		/*
  		 * The most recent snapshot of channel->noisefloor for the old
  		 * channel is only available after the hardware reset. Copy it to
-@@ -1259,6 +1261,7 @@ int ath9k_config(struct ieee80211_hw *hw
+@@ -1258,6 +1260,7 @@ int ath9k_config(struct ieee80211_hw *hw
  		sc->config.txpowlimit = 2 * conf->power_level;
  		ath9k_cmn_update_txpow(ah, sc->curtxpow,
  				       sc->config.txpowlimit, &sc->curtxpow);
diff --git a/package/mac80211/patches/525-ath9k_use_configured_antenna_gain.patch b/package/mac80211/patches/525-ath9k_use_configured_antenna_gain.patch
index 4c34c89684..367438ea3e 100644
--- a/package/mac80211/patches/525-ath9k_use_configured_antenna_gain.patch
+++ b/package/mac80211/patches/525-ath9k_use_configured_antenna_gain.patch
@@ -21,7 +21,7 @@
  	if (ant_gain > max_gain)
 --- a/drivers/net/wireless/ath/ath9k/main.c
 +++ b/drivers/net/wireless/ath/ath9k/main.c
-@@ -1257,7 +1257,10 @@ int ath9k_config(struct ieee80211_hw *hw
+@@ -1256,7 +1256,10 @@ int ath9k_config(struct ieee80211_hw *hw
  	}
  
  	if (changed & IEEE80211_CONF_CHANGE_POWER) {
diff --git a/package/mac80211/patches/562-ath9k_add_idle_hack.patch b/package/mac80211/patches/562-ath9k_add_idle_hack.patch
index ec8bbcef6d..7c3c0426be 100644
--- a/package/mac80211/patches/562-ath9k_add_idle_hack.patch
+++ b/package/mac80211/patches/562-ath9k_add_idle_hack.patch
@@ -1,6 +1,6 @@
 --- a/drivers/net/wireless/ath/ath9k/main.c
 +++ b/drivers/net/wireless/ath/ath9k/main.c
-@@ -1081,6 +1081,7 @@ static void ath9k_remove_interface(struc
+@@ -1080,6 +1080,7 @@ static void ath9k_remove_interface(struc
  	ath9k_calculate_summary_state(hw, NULL);
  
  	mutex_unlock(&sc->mutex);
@@ -8,7 +8,7 @@
  	ath9k_ps_restore(sc);
  }
  
-@@ -1133,7 +1134,8 @@ int ath9k_config(struct ieee80211_hw *hw
+@@ -1132,7 +1133,8 @@ int ath9k_config(struct ieee80211_hw *hw
  	mutex_lock(&sc->mutex);
  
  	if (changed & IEEE80211_CONF_CHANGE_IDLE) {
diff --git a/package/mac80211/patches/564-ath9k_debugfs_diag.patch b/package/mac80211/patches/564-ath9k_debugfs_diag.patch
index 638d3b58d3..b7d9f5edc5 100644
--- a/package/mac80211/patches/564-ath9k_debugfs_diag.patch
+++ b/package/mac80211/patches/564-ath9k_debugfs_diag.patch
@@ -125,7 +125,7 @@
  }
 --- a/drivers/net/wireless/ath/ath9k/main.c
 +++ b/drivers/net/wireless/ath/ath9k/main.c
-@@ -470,6 +470,11 @@ irqreturn_t ath_isr(int irq, void *dev)
+@@ -469,6 +469,11 @@ irqreturn_t ath_isr(int irq, void *dev)
  	ath9k_hw_getisr(ah, &status);	/* NB: clears ISR too */
  	status &= ah->imask;	/* discard unasked-for bits */
  
diff --git a/package/mac80211/patches/566-ath9k_use_ieee80211_free_txskb.patch b/package/mac80211/patches/566-ath9k_use_ieee80211_free_txskb.patch
index 20fd408273..3b75ab5da3 100644
--- a/package/mac80211/patches/566-ath9k_use_ieee80211_free_txskb.patch
+++ b/package/mac80211/patches/566-ath9k_use_ieee80211_free_txskb.patch
@@ -127,7 +127,7 @@
  
 --- a/drivers/net/wireless/ath/ath9k/main.c
 +++ b/drivers/net/wireless/ath/ath9k/main.c
-@@ -769,7 +769,7 @@ static void ath9k_tx(struct ieee80211_hw
+@@ -768,7 +768,7 @@ static void ath9k_tx(struct ieee80211_hw
  
  	return;
  exit: