Merge tag 'v3.9-rc5' into wq/for-3.10

Writeback conversion to workqueue will be based on top of wq/for-3.10
branch to take advantage of custom attrs and NUMA support for unbound
workqueues.  Mainline currently contains two commits which result in
non-trivial merge conflicts with wq/for-3.10 and because
block/for-3.10/core is based on v3.9-rc3 which contains one of the
conflicting commits, we need a pre-merge-window merge anyway.  Let's
pull v3.9-rc5 into wq/for-3.10 so that the block tree doesn't suffer
from workqueue merge conflicts.

The two conflicts and their resolutions:

* e68035fb65 ("workqueue: convert to idr_alloc()") in mainline changes
  worker_pool_assign_id() to use idr_alloc() instead of the old idr
  interface.  worker_pool_assign_id() goes through multiple locking
  changes in wq/for-3.10 causing the following conflict.

  static int worker_pool_assign_id(struct worker_pool *pool)
  {
	  int ret;

  <<<<<<< HEAD
	  lockdep_assert_held(&wq_pool_mutex);

	  do {
		  if (!idr_pre_get(&worker_pool_idr, GFP_KERNEL))
			  return -ENOMEM;
		  ret = idr_get_new(&worker_pool_idr, pool, &pool->id);
	  } while (ret == -EAGAIN);
  =======
	  mutex_lock(&worker_pool_idr_mutex);
	  ret = idr_alloc(&worker_pool_idr, pool, 0, 0, GFP_KERNEL);
	  if (ret >= 0)
		  pool->id = ret;
	  mutex_unlock(&worker_pool_idr_mutex);
  >>>>>>> c67bf5361e7e66a0ff1f4caf95f89347d55dfb89

	  return ret < 0 ? ret : 0;
  }

  We want locking from the former and idr_alloc() usage from the
  latter, which can be combined to the following.

  static int worker_pool_assign_id(struct worker_pool *pool)
  {
	  int ret;

	  lockdep_assert_held(&wq_pool_mutex);

	  ret = idr_alloc(&worker_pool_idr, pool, 0, 0, GFP_KERNEL);
	  if (ret >= 0) {
		  pool->id = ret;
		  return 0;
	  }
	  return ret;
   }

* eb2834285c ("workqueue: fix possible pool stall bug in
  wq_unbind_fn()") updated wq_unbind_fn() such that it has single
  larger for_each_std_worker_pool() loop instead of two separate loops
  with a schedule() call inbetween.  wq/for-3.10 renamed
  pool->assoc_mutex to pool->manager_mutex causing the following
  conflict (earlier function body and comments omitted for brevity).

  static void wq_unbind_fn(struct work_struct *work)
  {
  ...
		  spin_unlock_irq(&pool->lock);
  <<<<<<< HEAD
		  mutex_unlock(&pool->manager_mutex);
	  }
  =======
		  mutex_unlock(&pool->assoc_mutex);
  >>>>>>> c67bf5361e7e66a0ff1f4caf95f89347d55dfb89

		  schedule();

  <<<<<<< HEAD
	  for_each_cpu_worker_pool(pool, cpu)
  =======
  >>>>>>> c67bf5361e7e66a0ff1f4caf95f89347d55dfb89
		  atomic_set(&pool->nr_running, 0);

		  spin_lock_irq(&pool->lock);
		  wake_up_worker(pool);
		  spin_unlock_irq(&pool->lock);
	  }
  }

  The resolution is mostly trivial.  We want the control flow of the
  latter with the rename of the former.

  static void wq_unbind_fn(struct work_struct *work)
  {
  ...
		  spin_unlock_irq(&pool->lock);
		  mutex_unlock(&pool->manager_mutex);

		  schedule();

		  atomic_set(&pool->nr_running, 0);

		  spin_lock_irq(&pool->lock);
		  wake_up_worker(pool);
		  spin_unlock_irq(&pool->lock);
	  }
  }

Signed-off-by: Tejun Heo <tj@kernel.org>

6 files changed, 33 insertions, 22 deletions

diff --git a/drivers/net/wireless/ath/ath9k/ar9003_calib.c b/drivers/net/wireless/ath/ath9k/ar9003_calib.c
index 4cc13940c895..f76c3ca07a45 100644
--- a/drivers/net/wireless/ath/ath9k/ar9003_calib.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_calib.c
@@ -1023,6 +1023,7 @@ static bool ar9003_hw_init_cal(struct ath_hw *ah,
 					  AR_PHY_AGC_CONTROL_FLTR_CAL   |
 					  AR_PHY_AGC_CONTROL_PKDET_CAL;
 
+	/* Use chip chainmask only for calibration */
 	ar9003_hw_set_chain_masks(ah, ah->caps.rx_chainmask, ah->caps.tx_chainmask);
 
 	if (rtt) {
@@ -1150,6 +1151,9 @@ skip_tx_iqcal:
 		ar9003_hw_rtt_disable(ah);
 	}
 
+	/* Revert chainmask to runtime parameters */
+	ar9003_hw_set_chain_masks(ah, ah->rxchainmask, ah->txchainmask);
+
 	/* Initialize list pointers */
 	ah->cal_list = ah->cal_list_last = ah->cal_list_curr = NULL;
 
diff --git a/drivers/net/wireless/ath/ath9k/common.h b/drivers/net/wireless/ath/ath9k/common.h
index 5f845beeb18b..050ca4a4850d 100644
--- a/drivers/net/wireless/ath/ath9k/common.h
+++ b/drivers/net/wireless/ath/ath9k/common.h
@@ -27,7 +27,7 @@
 #define WME_MAX_BA              WME_BA_BMP_SIZE
 #define ATH_TID_MAX_BUFS        (2 * WME_MAX_BA)
 
-#define ATH_RSSI_DUMMY_MARKER   0x127
+#define ATH_RSSI_DUMMY_MARKER   127
 #define ATH_RSSI_LPF_LEN 		10
 #define RSSI_LPF_THRESHOLD		-20
 #define ATH_RSSI_EP_MULTIPLIER     (1<<7)
diff --git a/drivers/net/wireless/ath/ath9k/htc.h b/drivers/net/wireless/ath/ath9k/htc.h
index 96bfb18078fa..d3b099d7898b 100644
--- a/drivers/net/wireless/ath/ath9k/htc.h
+++ b/drivers/net/wireless/ath/ath9k/htc.h
@@ -22,6 +22,7 @@
 #include <linux/firmware.h>
 #include <linux/skbuff.h>
 #include <linux/netdevice.h>
+#include <linux/etherdevice.h>
 #include <linux/leds.h>
 #include <linux/slab.h>
 #include <net/mac80211.h>
diff --git a/drivers/net/wireless/ath/ath9k/htc_drv_txrx.c b/drivers/net/wireless/ath/ath9k/htc_drv_txrx.c
index 3ad1fd05c5e7..bd8251c1c749 100644
--- a/drivers/net/wireless/ath/ath9k/htc_drv_txrx.c
+++ b/drivers/net/wireless/ath/ath9k/htc_drv_txrx.c
@@ -1067,15 +1067,19 @@ static bool ath9k_rx_prepare(struct ath9k_htc_priv *priv,
 
 	last_rssi = priv->rx.last_rssi;
 
-	if (likely(last_rssi != ATH_RSSI_DUMMY_MARKER))
-		rxbuf->rxstatus.rs_rssi = ATH_EP_RND(last_rssi,
-						     ATH_RSSI_EP_MULTIPLIER);
+	if (ieee80211_is_beacon(hdr->frame_control) &&
+	    !is_zero_ether_addr(common->curbssid) &&
+	    ether_addr_equal(hdr->addr3, common->curbssid)) {
+		s8 rssi = rxbuf->rxstatus.rs_rssi;
 
-	if (rxbuf->rxstatus.rs_rssi < 0)
-		rxbuf->rxstatus.rs_rssi = 0;
+		if (likely(last_rssi != ATH_RSSI_DUMMY_MARKER))
+			rssi = ATH_EP_RND(last_rssi, ATH_RSSI_EP_MULTIPLIER);
 
-	if (ieee80211_is_beacon(fc))
-		priv->ah->stats.avgbrssi = rxbuf->rxstatus.rs_rssi;
+		if (rssi < 0)
+			rssi = 0;
+
+		priv->ah->stats.avgbrssi = rssi;
+	}
 
 	rx_status->mactime = be64_to_cpu(rxbuf->rxstatus.rs_tstamp);
 	rx_status->band = hw->conf.channel->band;
diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c
index 2a2ae403e0e5..07e25260c31d 100644
--- a/drivers/net/wireless/ath/ath9k/hw.c
+++ b/drivers/net/wireless/ath/ath9k/hw.c
@@ -1463,7 +1463,9 @@ static bool ath9k_hw_chip_reset(struct ath_hw *ah,
 			reset_type = ATH9K_RESET_POWER_ON;
 		else
 			reset_type = ATH9K_RESET_COLD;
-	}
+	} else if (ah->chip_fullsleep || REG_READ(ah, AR_Q_TXE) ||
+		   (REG_READ(ah, AR_CR) & AR_CR_RXE))
+		reset_type = ATH9K_RESET_COLD;
 
 	if (!ath9k_hw_set_reset_reg(ah, reset_type))
 		return false;
diff --git a/drivers/net/wireless/ath/ath9k/link.c b/drivers/net/wireless/ath/ath9k/link.c
index ade3afb21f91..39c84ecf6a42 100644
--- a/drivers/net/wireless/ath/ath9k/link.c
+++ b/drivers/net/wireless/ath/ath9k/link.c
@@ -28,21 +28,21 @@ void ath_tx_complete_poll_work(struct work_struct *work)
 	int i;
 	bool needreset = false;
 
-	for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++)
-		if (ATH_TXQ_SETUP(sc, i)) {
-			txq = &sc->tx.txq[i];
-			ath_txq_lock(sc, txq);
-			if (txq->axq_depth) {
-				if (txq->axq_tx_inprogress) {
-					needreset = true;
-					ath_txq_unlock(sc, txq);
-					break;
-				} else {
-					txq->axq_tx_inprogress = true;
-				}
+	for (i = 0; i < IEEE80211_NUM_ACS; i++) {
+		txq = sc->tx.txq_map[i];
+
+		ath_txq_lock(sc, txq);
+		if (txq->axq_depth) {
+			if (txq->axq_tx_inprogress) {
+				needreset = true;
+				ath_txq_unlock(sc, txq);
+				break;
+			} else {
+				txq->axq_tx_inprogress = true;
 			}
-			ath_txq_unlock_complete(sc, txq);
 		}
+		ath_txq_unlock_complete(sc, txq);
+	}
 
 	if (needreset) {
 		ath_dbg(ath9k_hw_common(sc->sc_ah), RESET,