ath9k: fix missing chip wakeups causing instability issues on at least AR5416 (probab...

git-svn-id: svn://svn.openwrt.org/openwrt/branches/backfire@26419 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/package/mac80211/patches/580-ath9k_fix_ps_wakeup.patch b/package/mac80211/patches/580-ath9k_fix_ps_wakeup.patch
new file mode 100644 (file)
index 0000000..fc0d1c8
--- /dev/null
+++ b/package/mac80211/patches/580-ath9k_fix_ps_wakeup.patch
@@ -0,0 +1,127 @@
+--- a/drivers/net/wireless/ath/ath9k/main.c
++++ b/drivers/net/wireless/ath/ath9k/main.c
+@@ -324,7 +324,6 @@ static void ath_paprd_activate(struct at
+       if (!caldata || !caldata->paprd_done)
+               return;
+ 
+-      ath9k_ps_wakeup(sc);
+       ar9003_paprd_enable(ah, false);
+       for (chain = 0; chain < AR9300_MAX_CHAINS; chain++) {
+               if (!(common->tx_chainmask & BIT(chain)))
+@@ -334,7 +333,6 @@ static void ath_paprd_activate(struct at
+       }
+ 
+       ar9003_paprd_enable(ah, true);
+-      ath9k_ps_restore(sc);
+ }
+ 
+ static bool ath_paprd_send_frame(struct ath_softc *sc, struct sk_buff *skb, int chain)
+@@ -554,8 +552,11 @@ set_timer:
+       if ((sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_PAPRD) && ah->caldata) {
+               if (!ah->caldata->paprd_done)
+                       ieee80211_queue_work(sc->hw, &sc->paprd_work);
+-              else if (!ah->paprd_table_write_done)
++              else if (!ah->paprd_table_write_done) {
++                      ath9k_ps_wakeup(sc);
+                       ath_paprd_activate(sc);
++                      ath9k_ps_restore(sc);
++              }
+       }
+ }
+ 
+@@ -1376,7 +1377,6 @@ static void ath9k_calculate_summary_stat
+ 
+       ath9k_calculate_iter_data(hw, vif, &iter_data);
+ 
+-      ath9k_ps_wakeup(sc);
+       /* Set BSSID mask. */
+       memcpy(common->bssidmask, iter_data.mask, ETH_ALEN);
+       ath_hw_setbssidmask(common);
+@@ -1411,7 +1411,6 @@ static void ath9k_calculate_summary_stat
+       }
+ 
+       ath9k_hw_set_interrupts(ah, ah->imask);
+-      ath9k_ps_restore(sc);
+ 
+       /* Set up ANI */
+       if ((iter_data.naps + iter_data.nadhocs) > 0) {
+@@ -1457,6 +1456,7 @@ static int ath9k_add_interface(struct ie
+       struct ath_vif *avp = (void *)vif->drv_priv;
+       int ret = 0;
+ 
++      ath9k_ps_wakeup(sc);
+       mutex_lock(&sc->mutex);
+ 
+       switch (vif->type) {
+@@ -1503,6 +1503,7 @@ static int ath9k_add_interface(struct ie
+       ath9k_do_vif_add_setup(hw, vif);
+ out:
+       mutex_unlock(&sc->mutex);
++      ath9k_ps_restore(sc);
+       return ret;
+ }
+ 
+@@ -1517,6 +1518,7 @@ static int ath9k_change_interface(struct
+ 
+       ath_dbg(common, ATH_DBG_CONFIG, "Change Interface\n");
+       mutex_lock(&sc->mutex);
++      ath9k_ps_wakeup(sc);
+ 
+       /* See if new interface type is valid. */
+       if ((new_type == NL80211_IFTYPE_ADHOC) &&
+@@ -1546,6 +1548,7 @@ static int ath9k_change_interface(struct
+ 
+       ath9k_do_vif_add_setup(hw, vif);
+ out:
++      ath9k_ps_restore(sc);
+       mutex_unlock(&sc->mutex);
+       return ret;
+ }
+@@ -1558,6 +1561,7 @@ static void ath9k_remove_interface(struc
+ 
+       ath_dbg(common, ATH_DBG_CONFIG, "Detach Interface\n");
+ 
++      ath9k_ps_wakeup(sc);
+       mutex_lock(&sc->mutex);
+ 
+       sc->nvifs--;
+@@ -1569,6 +1573,7 @@ static void ath9k_remove_interface(struc
+       ath9k_calculate_summary_state(hw, NULL);
+ 
+       mutex_unlock(&sc->mutex);
++      ath9k_ps_restore(sc);
+ }
+ 
+ static void ath9k_enable_ps(struct ath_softc *sc)
+@@ -1830,6 +1835,7 @@ static int ath9k_conf_tx(struct ieee8021
+ 
+       txq = sc->tx.txq_map[queue];
+ 
++      ath9k_ps_wakeup(sc);
+       mutex_lock(&sc->mutex);
+ 
+       memset(&qi, 0, sizeof(struct ath9k_tx_queue_info));
+@@ -1853,6 +1859,7 @@ static int ath9k_conf_tx(struct ieee8021
+                       ath_beaconq_config(sc);
+ 
+       mutex_unlock(&sc->mutex);
++      ath9k_ps_restore(sc);
+ 
+       return ret;
+ }
+@@ -1929,6 +1936,7 @@ static void ath9k_bss_info_changed(struc
+       int slottime;
+       int error;
+ 
++      ath9k_ps_wakeup(sc);
+       mutex_lock(&sc->mutex);
+ 
+       if (changed & BSS_CHANGED_BSSID) {
+@@ -2029,6 +2037,7 @@ static void ath9k_bss_info_changed(struc
+       }
+ 
+       mutex_unlock(&sc->mutex);
++      ath9k_ps_restore(sc);
+ }
+ 
+ static u64 ath9k_get_tsf(struct ieee80211_hw *hw)