Merge branch 'wireless-2.6' into wireless-next-2.6

Conflicts:
	drivers/net/wireless/iwlwifi/iwl-6000.c

drivers/net/wireless/iwlwifi/iwl-6000.c

@@ -261,7 +261,7 @@ static struct iwl_lib_ops iwl6000_lib = {
 			EEPROM_REG_BAND_3_CHANNELS,
 			EEPROM_REG_BAND_4_CHANNELS,
 			EEPROM_REG_BAND_5_CHANNELS,
-			EEPROM_REG_BAND_24_HT40_CHANNELS,
+			EEPROM_6000_REG_BAND_24_HT40_CHANNELS,
 			EEPROM_REG_BAND_52_HT40_CHANNELS
 		},
 		.verify_signature  = iwlcore_eeprom_verify_signature,
@@ -328,7 +328,7 @@ static struct iwl_lib_ops iwl6050_lib = {
 			EEPROM_REG_BAND_3_CHANNELS,
 			EEPROM_REG_BAND_4_CHANNELS,
 			EEPROM_REG_BAND_5_CHANNELS,
-			EEPROM_REG_BAND_24_HT40_CHANNELS,
+			EEPROM_6000_REG_BAND_24_HT40_CHANNELS,
 			EEPROM_REG_BAND_52_HT40_CHANNELS
 		},
 		.verify_signature  = iwlcore_eeprom_verify_signature,

drivers/net/wireless/iwlwifi/iwl-agn.c

@@ -3304,6 +3304,7 @@ static void iwl_cancel_deferred_work(struct iwl_priv *priv)
 
 	cancel_delayed_work_sync(&priv->init_alive_start);
 	cancel_delayed_work(&priv->scan_check);
+	cancel_work_sync(&priv->start_internal_scan);
 	cancel_delayed_work(&priv->alive_start);
 	cancel_work_sync(&priv->beacon_update);
 	del_timer_sync(&priv->statistics_periodic);

drivers/net/wireless/iwlwifi/iwl-calib.c

@@ -807,6 +807,18 @@ void iwl_chain_noise_calibration(struct iwl_priv *priv,
 		}
 	}
 
+	/*
+	 * The above algorithm sometimes fails when the ucode
+	 * reports 0 for all chains. It's not clear why that
+	 * happens to start with, but it is then causing trouble
+	 * because this can make us enable more chains than the
+	 * hardware really has.
+	 *
+	 * To be safe, simply mask out any chains that we know
+	 * are not on the device.
+	 */
+	active_chains &= priv->hw_params.valid_rx_ant;
+
 	num_tx_chains = 0;
 	for (i = 0; i < NUM_RX_CHAINS; i++) {
 		/* loops on all the bits of

drivers/net/wireless/iwlwifi/iwl-core.c

@@ -2801,7 +2801,6 @@ static void iwl_force_rf_reset(struct iwl_priv *priv)
 	 */
 	IWL_DEBUG_INFO(priv, "perform radio reset.\n");
 	iwl_internal_short_hw_scan(priv);
-	return;
 }
 
 

drivers/net/wireless/iwlwifi/iwl-core.h

@@ -502,7 +502,7 @@ void iwl_init_scan_params(struct iwl_priv *priv);
 int iwl_scan_cancel(struct iwl_priv *priv);
 int iwl_scan_cancel_timeout(struct iwl_priv *priv, unsigned long ms);
 int iwl_mac_hw_scan(struct ieee80211_hw *hw, struct cfg80211_scan_request *req);
-int iwl_internal_short_hw_scan(struct iwl_priv *priv);
+void iwl_internal_short_hw_scan(struct iwl_priv *priv);
 int iwl_force_reset(struct iwl_priv *priv, int mode);
 u16 iwl_fill_probe_req(struct iwl_priv *priv, struct ieee80211_mgmt *frame,
 		       const u8 *ie, int ie_len, int left);

drivers/net/wireless/iwlwifi/iwl-dev.h

@@ -1264,6 +1264,7 @@ struct iwl_priv {
 	struct work_struct tt_work;
 	struct work_struct ct_enter;
 	struct work_struct ct_exit;
+	struct work_struct start_internal_scan;
 
 	struct tasklet_struct irq_tasklet;
 

drivers/net/wireless/iwlwifi/iwl-eeprom.h

@@ -203,6 +203,10 @@ struct iwl_eeprom_enhanced_txpwr {
 #define EEPROM_REG_BAND_52_HT40_CHANNELS  ((0x92)\
 		| INDIRECT_ADDRESS | INDIRECT_REGULATORY)   /* 22  bytes */
 
+/* 6000 regulatory - indirect access */
+#define EEPROM_6000_REG_BAND_24_HT40_CHANNELS  ((0x80)\
+		| INDIRECT_ADDRESS | INDIRECT_REGULATORY)   /* 14  bytes */
+
 /* 6000 and up regulatory tx power - indirect access */
 /* max. elements per section */
 #define EEPROM_MAX_TXPOWER_SECTION_ELEMENTS	(8)

drivers/net/wireless/iwlwifi/iwl-scan.c

@@ -469,6 +469,8 @@ EXPORT_SYMBOL(iwl_init_scan_params);
 
 static int iwl_scan_initiate(struct iwl_priv *priv)
 {
+	WARN_ON(!mutex_is_locked(&priv->mutex));
+
 	IWL_DEBUG_INFO(priv, "Starting scan...\n");
 	set_bit(STATUS_SCANNING, &priv->status);
 	priv->is_internal_short_scan = false;
@@ -546,24 +548,31 @@ EXPORT_SYMBOL(iwl_mac_hw_scan);
  * internal short scan, this function should only been called while associated.
  * It will reset and tune the radio to prevent possible RF related problem
  */
-int iwl_internal_short_hw_scan(struct iwl_priv *priv)
+void iwl_internal_short_hw_scan(struct iwl_priv *priv)
 {
-	int ret = 0;
+	queue_work(priv->workqueue, &priv->start_internal_scan);
+}
+
+static void iwl_bg_start_internal_scan(struct work_struct *work)
+{
+	struct iwl_priv *priv =
+		container_of(work, struct iwl_priv, start_internal_scan);
+
+	mutex_lock(&priv->mutex);
 
 	if (!iwl_is_ready_rf(priv)) {
-		ret = -EIO;
 		IWL_DEBUG_SCAN(priv, "not ready or exit pending\n");
-		goto out;
+		goto unlock;
 	}
+
 	if (test_bit(STATUS_SCANNING, &priv->status)) {
 		IWL_DEBUG_SCAN(priv, "Scan already in progress.\n");
-		ret = -EAGAIN;
-		goto out;
+		goto unlock;
 	}
+
 	if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
 		IWL_DEBUG_SCAN(priv, "Scan request while abort pending\n");
-		ret = -EAGAIN;
-		goto out;
+		goto unlock;
 	}
 
 	priv->scan_bands = 0;
@@ -576,9 +585,8 @@ int iwl_internal_short_hw_scan(struct iwl_priv *priv)
 	set_bit(STATUS_SCANNING, &priv->status);
 	priv->is_internal_short_scan = true;
 	queue_work(priv->workqueue, &priv->request_scan);
-
-out:
-	return ret;
+ unlock:
+	mutex_unlock(&priv->mutex);
 }
 
 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
@@ -962,6 +970,7 @@ void iwl_setup_scan_deferred_work(struct iwl_priv *priv)
 	INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed);
 	INIT_WORK(&priv->request_scan, iwl_bg_request_scan);
 	INIT_WORK(&priv->abort_scan, iwl_bg_abort_scan);
+	INIT_WORK(&priv->start_internal_scan, iwl_bg_start_internal_scan);
 	INIT_DELAYED_WORK(&priv->scan_check, iwl_bg_scan_check);
 }
 EXPORT_SYMBOL(iwl_setup_scan_deferred_work);