mac802154: remove channel attributes from sdata

These channel attributes was part of "channel context switch while xmit"
which was removed by commit dc67c6b3
("mac802154: tx: remove xmit channel context switch"). This patch
removes these unnecessary variables and use the current_page and
current_channel by wpan_phy struct now.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

net/mac802154/ieee802154_i.h

@@ -85,9 +85,6 @@ struct ieee802154_sub_if_data {
 	__le16 short_addr;
 	__le64 extended_addr;
 
-	u8 chan;
-	u8 page;
-
 	struct ieee802154_mac_params mac_params;
 
 	/* MAC BSN field */

net/mac802154/iface.c

@@ -417,8 +417,6 @@ void mac802154_wpan_setup(struct net_device *dev)
 	sdata = IEEE802154_DEV_TO_SUB_IF(dev);
 	sdata->type = IEEE802154_DEV_WPAN;
 
-	sdata->chan = MAC802154_CHAN_NONE;
-
 	spin_lock_init(&sdata->mib_lock);
 	mutex_init(&sdata->sec_mtx);
 
@@ -454,6 +452,4 @@ void mac802154_monitor_setup(struct net_device *dev)
 
 	sdata = IEEE802154_DEV_TO_SUB_IF(dev);
 	sdata->type = IEEE802154_DEV_MONITOR;
-
-	sdata->chan = MAC802154_CHAN_NONE; /* not initialized */
 }

net/mac802154/mib.c

@@ -26,11 +26,6 @@
 #include "ieee802154_i.h"
 #include "driver-ops.h"
 
-struct phy_chan_notify_work {
-	struct work_struct work;
-	struct net_device *dev;
-};
-
 struct hw_addr_filt_notify_work {
 	struct work_struct work;
 	struct net_device *dev;
@@ -161,54 +156,22 @@ u8 mac802154_dev_get_dsn(const struct net_device *dev)
 	return sdata->dsn++;
 }
 
-static void phy_chan_notify(struct work_struct *work)
-{
-	struct phy_chan_notify_work *nw = container_of(work,
-					  struct phy_chan_notify_work, work);
-	struct net_device *dev = nw->dev;
-	struct ieee802154_local *local = mac802154_slave_get_priv(dev);
-	struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
-	int res;
-
-	mutex_lock(&sdata->local->phy->pib_lock);
-	res = drv_set_channel(local, sdata->page, sdata->chan);
-	if (res) {
-		pr_debug("set_channel failed\n");
-	} else {
-		sdata->local->phy->current_channel = sdata->chan;
-		sdata->local->phy->current_page = sdata->page;
-	}
-	mutex_unlock(&sdata->local->phy->pib_lock);
-
-	kfree(nw);
-}
-
 void mac802154_dev_set_page_channel(struct net_device *dev, u8 page, u8 chan)
 {
 	struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
-	struct phy_chan_notify_work *work;
+	struct ieee802154_local *local = sdata->local;
+	int res;
 
 	BUG_ON(dev->type != ARPHRD_IEEE802154);
 
-	spin_lock_bh(&sdata->mib_lock);
-	sdata->page = page;
-	sdata->chan = chan;
-	spin_unlock_bh(&sdata->mib_lock);
-
-	mutex_lock(&sdata->local->phy->pib_lock);
-	if (sdata->local->phy->current_channel != sdata->chan ||
-	    sdata->local->phy->current_page != sdata->page) {
-		mutex_unlock(&sdata->local->phy->pib_lock);
-
-		work = kzalloc(sizeof(*work), GFP_ATOMIC);
-		if (!work)
-			return;
-
-		INIT_WORK(&work->work, phy_chan_notify);
-		work->dev = dev;
-		queue_work(sdata->local->workqueue, &work->work);
+	res = drv_set_channel(local, page, chan);
+	if (res) {
+		pr_debug("set_channel failed\n");
 	} else {
-		mutex_unlock(&sdata->local->phy->pib_lock);
+		mutex_lock(&local->phy->pib_lock);
+		local->phy->current_channel = chan;
+		local->phy->current_page = page;
+		mutex_unlock(&local->phy->pib_lock);
 	}
 }