Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/gi…

…t/linville/wireless into for-davem

drivers/net/wireless/iwlwifi/dvm/rxon.c

@@ -1419,6 +1419,14 @@ void iwlagn_bss_info_changed(struct ieee80211_hw *hw,
 
 	mutex_lock(&priv->mutex);
 
+	if (changes & BSS_CHANGED_IDLE && bss_conf->idle) {
+		/*
+		 * If we go idle, then clearly no "passive-no-rx"
+		 * workaround is needed any more, this is a reset.
+		 */
+		iwlagn_lift_passive_no_rx(priv);
+	}
+
 	if (unlikely(!iwl_is_ready(priv))) {
 		IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
 		mutex_unlock(&priv->mutex);
@@ -1450,16 +1458,6 @@ void iwlagn_bss_info_changed(struct ieee80211_hw *hw,
 			priv->timestamp = bss_conf->sync_tsf;
 			ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
 		} else {
-			/*
-			 * If we disassociate while there are pending
-			 * frames, just wake up the queues and let the
-			 * frames "escape" ... This shouldn't really
-			 * be happening to start with, but we should
-			 * not get stuck in this case either since it
-			 * can happen if userspace gets confused.
-			 */
-			iwlagn_lift_passive_no_rx(priv);
-
 			ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
 
 			if (ctx->ctxid == IWL_RXON_CTX_BSS)

drivers/net/wireless/iwlwifi/dvm/tx.c

@@ -1192,7 +1192,7 @@ int iwlagn_rx_reply_tx(struct iwl_priv *priv, struct iwl_rx_cmd_buffer *rxb,
 			memset(&info->status, 0, sizeof(info->status));
 
 			if (status == TX_STATUS_FAIL_PASSIVE_NO_RX &&
-			    iwl_is_associated_ctx(ctx) && ctx->vif &&
+			    ctx->vif &&
 			    ctx->vif->type == NL80211_IFTYPE_STATION) {
 				/* block and stop all queues */
 				priv->passive_no_rx = true;

drivers/net/wireless/mwifiex/cfg80211.c

@@ -1892,7 +1892,8 @@ mwifiex_cfg80211_scan(struct wiphy *wiphy,
 		}
 	}
 
-	for (i = 0; i < request->n_channels; i++) {
+	for (i = 0; i < min_t(u32, request->n_channels,
+			      MWIFIEX_USER_SCAN_CHAN_MAX); i++) {
 		chan = request->channels[i];
 		priv->user_scan_cfg->chan_list[i].chan_number = chan->hw_value;
 		priv->user_scan_cfg->chan_list[i].radio_type = chan->band;

drivers/nfc/microread/mei.c

@@ -22,7 +22,7 @@
 #include <linux/slab.h>
 #include <linux/interrupt.h>
 #include <linux/gpio.h>
-#include <linux/mei_bus.h>
+#include <linux/mei_cl_bus.h>
 
 #include <linux/nfc.h>
 #include <net/nfc/hci.h>
@@ -32,9 +32,6 @@
 
 #define MICROREAD_DRIVER_NAME "microread"
 
-#define MICROREAD_UUID UUID_LE(0x0bb17a78, 0x2a8e, 0x4c50, 0x94, \
-			       0xd4, 0x50, 0x26, 0x67, 0x23, 0x77, 0x5c)
-
 struct mei_nfc_hdr {
 	u8 cmd;
 	u8 status;
@@ -48,7 +45,7 @@ struct mei_nfc_hdr {
 #define MEI_NFC_MAX_READ (MEI_NFC_HEADER_SIZE + MEI_NFC_MAX_HCI_PAYLOAD)
 
 struct microread_mei_phy {
-	struct mei_device *mei_device;
+	struct mei_cl_device *device;
 	struct nfc_hci_dev *hdev;
 
 	int powered;
@@ -105,30 +102,30 @@ static int microread_mei_write(void *phy_id, struct sk_buff *skb)
 
 	MEI_DUMP_SKB_OUT("mei frame sent", skb);
 
-	r = mei_send(phy->device, skb->data, skb->len);
+	r = mei_cl_send(phy->device, skb->data, skb->len);
 	if (r > 0)
 		r = 0;
 
 	return r;
 }
 
-static void microread_event_cb(struct mei_device *device, u32 events,
+static void microread_event_cb(struct mei_cl_device *device, u32 events,
 			       void *context)
 {
 	struct microread_mei_phy *phy = context;
 
 	if (phy->hard_fault != 0)
 		return;
 
-	if (events & BIT(MEI_EVENT_RX)) {
+	if (events & BIT(MEI_CL_EVENT_RX)) {
 		struct sk_buff *skb;
 		int reply_size;
 
 		skb = alloc_skb(MEI_NFC_MAX_READ, GFP_KERNEL);
 		if (!skb)
 			return;
 
-		reply_size = mei_recv(device, skb->data, MEI_NFC_MAX_READ);
+		reply_size = mei_cl_recv(device, skb->data, MEI_NFC_MAX_READ);
 		if (reply_size < MEI_NFC_HEADER_SIZE) {
 			kfree(skb);
 			return;
@@ -149,8 +146,8 @@ static struct nfc_phy_ops mei_phy_ops = {
 	.disable = microread_mei_disable,
 };
 
-static int microread_mei_probe(struct mei_device *device,
-			       const struct mei_id *id)
+static int microread_mei_probe(struct mei_cl_device *device,
+			       const struct mei_cl_device_id *id)
 {
 	struct microread_mei_phy *phy;
 	int r;
@@ -164,9 +161,9 @@ static int microread_mei_probe(struct mei_device *device,
 	}
 
 	phy->device = device;
-	mei_set_clientdata(device, phy);
+	mei_cl_set_drvdata(device, phy);
 
-	r = mei_register_event_cb(device, microread_event_cb, phy);
+	r = mei_cl_register_event_cb(device, microread_event_cb, phy);
 	if (r) {
 		pr_err(MICROREAD_DRIVER_NAME ": event cb registration failed\n");
 		goto err_out;
@@ -186,9 +183,9 @@ static int microread_mei_probe(struct mei_device *device,
 	return r;
 }
 
-static int microread_mei_remove(struct mei_device *device)
+static int microread_mei_remove(struct mei_cl_device *device)
 {
-	struct microread_mei_phy *phy = mei_get_clientdata(device);
+	struct microread_mei_phy *phy = mei_cl_get_drvdata(device);
 
 	pr_info("Removing microread\n");
 
@@ -202,16 +199,15 @@ static int microread_mei_remove(struct mei_device *device)
 	return 0;
 }
 
-static struct mei_id microread_mei_tbl[] = {
-	{ MICROREAD_DRIVER_NAME, MICROREAD_UUID },
+static struct mei_cl_device_id microread_mei_tbl[] = {
+	{ MICROREAD_DRIVER_NAME },
 
 	/* required last entry */
 	{ }
 };
-
 MODULE_DEVICE_TABLE(mei, microread_mei_tbl);
 
-static struct mei_driver microread_driver = {
+static struct mei_cl_driver microread_driver = {
 	.id_table = microread_mei_tbl,
 	.name = MICROREAD_DRIVER_NAME,
 
@@ -225,7 +221,7 @@ static int microread_mei_init(void)
 
 	pr_debug(DRIVER_DESC ": %s\n", __func__);
 
-	r = mei_driver_register(&microread_driver);
+	r = mei_cl_driver_register(&microread_driver);
 	if (r) {
 		pr_err(MICROREAD_DRIVER_NAME ": driver registration failed\n");
 		return r;
@@ -236,7 +232,7 @@ static int microread_mei_init(void)
 
 static void microread_mei_exit(void)
 {
-	mei_driver_unregister(&microread_driver);
+	mei_cl_driver_unregister(&microread_driver);
 }
 
 module_init(microread_mei_init);

net/mac80211/cfg.c

@@ -2582,7 +2582,7 @@ static int ieee80211_cancel_roc(struct ieee80211_local *local,
 			list_del(&dep->list);
 			mutex_unlock(&local->mtx);
 
-			ieee80211_roc_notify_destroy(dep);
+			ieee80211_roc_notify_destroy(dep, true);
 			return 0;
 		}
 
@@ -2622,7 +2622,7 @@ static int ieee80211_cancel_roc(struct ieee80211_local *local,
 			ieee80211_start_next_roc(local);
 		mutex_unlock(&local->mtx);
 
-		ieee80211_roc_notify_destroy(found);
+		ieee80211_roc_notify_destroy(found, true);
 	} else {
 		/* work may be pending so use it all the time */
 		found->abort = true;
@@ -2632,6 +2632,8 @@ static int ieee80211_cancel_roc(struct ieee80211_local *local,
 
 		/* work will clean up etc */
 		flush_delayed_work(&found->work);
+		WARN_ON(!found->to_be_freed);
+		kfree(found);
 	}
 
 	return 0;

net/mac80211/chan.c

@@ -63,6 +63,7 @@ ieee80211_new_chanctx(struct ieee80211_local *local,
 		      enum ieee80211_chanctx_mode mode)
 {
 	struct ieee80211_chanctx *ctx;
+	u32 changed;
 	int err;
 
 	lockdep_assert_held(&local->chanctx_mtx);
@@ -76,6 +77,13 @@ ieee80211_new_chanctx(struct ieee80211_local *local,
 	ctx->conf.rx_chains_dynamic = 1;
 	ctx->mode = mode;
 
+	/* acquire mutex to prevent idle from changing */
+	mutex_lock(&local->mtx);
+	/* turn idle off *before* setting channel -- some drivers need that */
+	changed = ieee80211_idle_off(local);
+	if (changed)
+		ieee80211_hw_config(local, changed);
+
 	if (!local->use_chanctx) {
 		local->_oper_channel_type =
 			cfg80211_get_chandef_type(chandef);
@@ -85,14 +93,17 @@ ieee80211_new_chanctx(struct ieee80211_local *local,
 		err = drv_add_chanctx(local, ctx);
 		if (err) {
 			kfree(ctx);
-			return ERR_PTR(err);
+			ctx = ERR_PTR(err);
+
+			ieee80211_recalc_idle(local);
+			goto out;
 		}
 	}
 
+	/* and keep the mutex held until the new chanctx is on the list */
 	list_add_rcu(&ctx->list, &local->chanctx_list);
 
-	mutex_lock(&local->mtx);
-	ieee80211_recalc_idle(local);
+ out:
 	mutex_unlock(&local->mtx);
 
 	return ctx;

net/mac80211/ieee80211_i.h

@@ -309,6 +309,7 @@ struct ieee80211_roc_work {
 	struct ieee80211_channel *chan;
 
 	bool started, abort, hw_begun, notified;
+	bool to_be_freed;
 
 	unsigned long hw_start_time;
 
@@ -1347,7 +1348,7 @@ void ieee80211_offchannel_return(struct ieee80211_local *local);
 void ieee80211_roc_setup(struct ieee80211_local *local);
 void ieee80211_start_next_roc(struct ieee80211_local *local);
 void ieee80211_roc_purge(struct ieee80211_sub_if_data *sdata);
-void ieee80211_roc_notify_destroy(struct ieee80211_roc_work *roc);
+void ieee80211_roc_notify_destroy(struct ieee80211_roc_work *roc, bool free);
 void ieee80211_sw_roc_work(struct work_struct *work);
 void ieee80211_handle_roc_started(struct ieee80211_roc_work *roc);
 
@@ -1361,6 +1362,7 @@ int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
 			     enum nl80211_iftype type);
 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
 void ieee80211_remove_interfaces(struct ieee80211_local *local);
+u32 ieee80211_idle_off(struct ieee80211_local *local);
 void ieee80211_recalc_idle(struct ieee80211_local *local);
 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
 				    const int offset);

net/mac80211/iface.c

@@ -78,7 +78,7 @@ void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata)
 		ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_TXPOWER);
 }
 
-static u32 ieee80211_idle_off(struct ieee80211_local *local)
+u32 ieee80211_idle_off(struct ieee80211_local *local)
 {
 	if (!(local->hw.conf.flags & IEEE80211_CONF_IDLE))
 		return 0;

net/mac80211/offchannel.c

@@ -297,10 +297,13 @@ void ieee80211_start_next_roc(struct ieee80211_local *local)
 	}
 }
 
-void ieee80211_roc_notify_destroy(struct ieee80211_roc_work *roc)
+void ieee80211_roc_notify_destroy(struct ieee80211_roc_work *roc, bool free)
 {
 	struct ieee80211_roc_work *dep, *tmp;
 
+	if (WARN_ON(roc->to_be_freed))
+		return;
+
 	/* was never transmitted */
 	if (roc->frame) {
 		cfg80211_mgmt_tx_status(&roc->sdata->wdev,
@@ -316,9 +319,12 @@ void ieee80211_roc_notify_destroy(struct ieee80211_roc_work *roc)
 						   GFP_KERNEL);
 
 	list_for_each_entry_safe(dep, tmp, &roc->dependents, list)
-		ieee80211_roc_notify_destroy(dep);
+		ieee80211_roc_notify_destroy(dep, true);
 
-	kfree(roc);
+	if (free)
+		kfree(roc);
+	else
+		roc->to_be_freed = true;
 }
 
 void ieee80211_sw_roc_work(struct work_struct *work)
@@ -331,6 +337,9 @@ void ieee80211_sw_roc_work(struct work_struct *work)
 
 	mutex_lock(&local->mtx);
 
+	if (roc->to_be_freed)
+		goto out_unlock;
+
 	if (roc->abort)
 		goto finish;
 
@@ -370,7 +379,7 @@ void ieee80211_sw_roc_work(struct work_struct *work)
  finish:
 		list_del(&roc->list);
 		started = roc->started;
-		ieee80211_roc_notify_destroy(roc);
+		ieee80211_roc_notify_destroy(roc, !roc->abort);
 
 		if (started) {
 			drv_flush(local, false);
@@ -410,7 +419,7 @@ static void ieee80211_hw_roc_done(struct work_struct *work)
 
 	list_del(&roc->list);
 
-	ieee80211_roc_notify_destroy(roc);
+	ieee80211_roc_notify_destroy(roc, true);
 
 	/* if there's another roc, start it now */
 	ieee80211_start_next_roc(local);
@@ -460,12 +469,14 @@ void ieee80211_roc_purge(struct ieee80211_sub_if_data *sdata)
 	list_for_each_entry_safe(roc, tmp, &tmp_list, list) {
 		if (local->ops->remain_on_channel) {
 			list_del(&roc->list);
-			ieee80211_roc_notify_destroy(roc);
+			ieee80211_roc_notify_destroy(roc, true);
 		} else {
 			ieee80211_queue_delayed_work(&local->hw, &roc->work, 0);
 
 			/* work will clean up etc */
 			flush_delayed_work(&roc->work);
+			WARN_ON(!roc->to_be_freed);
+			kfree(roc);
 		}
 	}