wifi: mt76: mt7996: rely on shared sta_poll_list and sta_poll_lock

Rely on sta_poll_list and sta_poll_lock fields in mt76_dev structure
and get rid of private copies.

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

Author: LorenzoBianconi

drivers/net/wireless/mediatek/mt76/mt7996/init.c

@@ -856,9 +856,7 @@ int mt7996_register_device(struct mt7996_dev *dev)
 	INIT_WORK(&dev->rc_work, mt7996_mac_sta_rc_work);
 	INIT_DELAYED_WORK(&dev->mphy.mac_work, mt7996_mac_work);
 	INIT_LIST_HEAD(&dev->sta_rc_list);
-	INIT_LIST_HEAD(&dev->sta_poll_list);
 	INIT_LIST_HEAD(&dev->twt_list);
-	spin_lock_init(&dev->sta_poll_lock);
 
 	init_waitqueue_head(&dev->reset_wait);
 	INIT_WORK(&dev->reset_work, mt7996_mac_reset_work);

drivers/net/wireless/mediatek/mt76/mt7996/mac.c

@@ -111,9 +111,9 @@ static void mt7996_mac_sta_poll(struct mt7996_dev *dev)
 	LIST_HEAD(sta_poll_list);
 	int i;
 
-	spin_lock_bh(&dev->sta_poll_lock);
-	list_splice_init(&dev->sta_poll_list, &sta_poll_list);
-	spin_unlock_bh(&dev->sta_poll_lock);
+	spin_lock_bh(&dev->mt76.sta_poll_lock);
+	list_splice_init(&dev->mt76.sta_poll_list, &sta_poll_list);
+	spin_unlock_bh(&dev->mt76.sta_poll_lock);
 
 	rcu_read_lock();
 
@@ -124,15 +124,15 @@ static void mt7996_mac_sta_poll(struct mt7996_dev *dev)
 		s8 rssi[4];
 		u8 bw;
 
-		spin_lock_bh(&dev->sta_poll_lock);
+		spin_lock_bh(&dev->mt76.sta_poll_lock);
 		if (list_empty(&sta_poll_list)) {
-			spin_unlock_bh(&dev->sta_poll_lock);
+			spin_unlock_bh(&dev->mt76.sta_poll_lock);
 			break;
 		}
 		msta = list_first_entry(&sta_poll_list,
 					struct mt7996_sta, poll_list);
 		list_del_init(&msta->poll_list);
-		spin_unlock_bh(&dev->sta_poll_lock);
+		spin_unlock_bh(&dev->mt76.sta_poll_lock);
 
 		idx = msta->wcid.idx;
 
@@ -681,10 +681,11 @@ mt7996_mac_fill_rx(struct mt7996_dev *dev, struct sk_buff *skb)
 		struct mt7996_sta *msta;
 
 		msta = container_of(status->wcid, struct mt7996_sta, wcid);
-		spin_lock_bh(&dev->sta_poll_lock);
+		spin_lock_bh(&dev->mt76.sta_poll_lock);
 		if (list_empty(&msta->poll_list))
-			list_add_tail(&msta->poll_list, &dev->sta_poll_list);
-		spin_unlock_bh(&dev->sta_poll_lock);
+			list_add_tail(&msta->poll_list,
+				      &dev->mt76.sta_poll_list);
+		spin_unlock_bh(&dev->mt76.sta_poll_lock);
 	}
 
 	status->freq = mphy->chandef.chan->center_freq;
@@ -1291,10 +1292,11 @@ mt7996_mac_tx_free(struct mt7996_dev *dev, void *data, int len)
 				continue;
 
 			msta = container_of(wcid, struct mt7996_sta, wcid);
-			spin_lock_bh(&dev->sta_poll_lock);
+			spin_lock_bh(&mdev->sta_poll_lock);
 			if (list_empty(&msta->poll_list))
-				list_add_tail(&msta->poll_list, &dev->sta_poll_list);
-			spin_unlock_bh(&dev->sta_poll_lock);
+				list_add_tail(&msta->poll_list,
+					      &mdev->sta_poll_list);
+			spin_unlock_bh(&mdev->sta_poll_lock);
 			continue;
 		}
 
@@ -1499,10 +1501,10 @@ static void mt7996_mac_add_txs(struct mt7996_dev *dev, void *data)
 	if (!wcid->sta)
 		goto out;
 
-	spin_lock_bh(&dev->sta_poll_lock);
+	spin_lock_bh(&dev->mt76.sta_poll_lock);
 	if (list_empty(&msta->poll_list))
-		list_add_tail(&msta->poll_list, &dev->sta_poll_list);
-	spin_unlock_bh(&dev->sta_poll_lock);
+		list_add_tail(&msta->poll_list, &dev->mt76.sta_poll_list);
+	spin_unlock_bh(&dev->mt76.sta_poll_lock);
 
 out:
 	rcu_read_unlock();
@@ -2325,15 +2327,15 @@ void mt7996_mac_sta_rc_work(struct work_struct *work)
 	u32 changed;
 	LIST_HEAD(list);
 
-	spin_lock_bh(&dev->sta_poll_lock);
+	spin_lock_bh(&dev->mt76.sta_poll_lock);
 	list_splice_init(&dev->sta_rc_list, &list);
 
 	while (!list_empty(&list)) {
 		msta = list_first_entry(&list, struct mt7996_sta, rc_list);
 		list_del_init(&msta->rc_list);
 		changed = msta->changed;
 		msta->changed = 0;
-		spin_unlock_bh(&dev->sta_poll_lock);
+		spin_unlock_bh(&dev->mt76.sta_poll_lock);
 
 		sta = container_of((void *)msta, struct ieee80211_sta, drv_priv);
 		vif = container_of((void *)msta->vif, struct ieee80211_vif, drv_priv);
@@ -2345,10 +2347,10 @@ void mt7996_mac_sta_rc_work(struct work_struct *work)
 
 		/* TODO: smps change */
 
-		spin_lock_bh(&dev->sta_poll_lock);
+		spin_lock_bh(&dev->mt76.sta_poll_lock);
 	}
 
-	spin_unlock_bh(&dev->sta_poll_lock);
+	spin_unlock_bh(&dev->mt76.sta_poll_lock);
 }
 
 void mt7996_mac_work(struct work_struct *work)

drivers/net/wireless/mediatek/mt76/mt7996/main.c

@@ -263,10 +263,10 @@ static void mt7996_remove_interface(struct ieee80211_hw *hw,
 	phy->omac_mask &= ~BIT_ULL(mvif->mt76.omac_idx);
 	mutex_unlock(&dev->mt76.mutex);
 
-	spin_lock_bh(&dev->sta_poll_lock);
+	spin_lock_bh(&dev->mt76.sta_poll_lock);
 	if (!list_empty(&msta->poll_list))
 		list_del_init(&msta->poll_list);
-	spin_unlock_bh(&dev->sta_poll_lock);
+	spin_unlock_bh(&dev->mt76.sta_poll_lock);
 
 	mt76_packet_id_flush(&dev->mt76, &msta->wcid);
 }
@@ -689,12 +689,12 @@ void mt7996_mac_sta_remove(struct mt76_dev *mdev, struct ieee80211_vif *vif,
 	for (i = 0; i < ARRAY_SIZE(msta->twt.flow); i++)
 		mt7996_mac_twt_teardown_flow(dev, msta, i);
 
-	spin_lock_bh(&dev->sta_poll_lock);
+	spin_lock_bh(&mdev->sta_poll_lock);
 	if (!list_empty(&msta->poll_list))
 		list_del_init(&msta->poll_list);
 	if (!list_empty(&msta->rc_list))
 		list_del_init(&msta->rc_list);
-	spin_unlock_bh(&dev->sta_poll_lock);
+	spin_unlock_bh(&mdev->sta_poll_lock);
 }
 
 static void mt7996_tx(struct ieee80211_hw *hw,
@@ -1005,11 +1005,11 @@ static void mt7996_sta_rc_work(void *data, struct ieee80211_sta *sta)
 	struct mt7996_dev *dev = msta->vif->phy->dev;
 	u32 *changed = data;
 
-	spin_lock_bh(&dev->sta_poll_lock);
+	spin_lock_bh(&dev->mt76.sta_poll_lock);
 	msta->changed |= *changed;
 	if (list_empty(&msta->rc_list))
 		list_add_tail(&msta->rc_list, &dev->sta_rc_list);
-	spin_unlock_bh(&dev->sta_poll_lock);
+	spin_unlock_bh(&dev->mt76.sta_poll_lock);
 }
 
 static void mt7996_sta_rc_update(struct ieee80211_hw *hw,

drivers/net/wireless/mediatek/mt76/mt7996/mt7996.h

@@ -224,9 +224,7 @@ struct mt7996_dev {
 #endif
 
 	struct list_head sta_rc_list;
-	struct list_head sta_poll_list;
 	struct list_head twt_list;
-	spinlock_t sta_poll_lock;
 
 	u32 hw_pattern;