wifi: mt76: mt7615: 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>

drivers/net/wireless/mediatek/mt76/mt7615/init.c

@@ -628,8 +628,6 @@ void mt7615_init_device(struct mt7615_dev *dev)
 	INIT_DELAYED_WORK(&dev->coredump.work, mt7615_coredump_work);
 	skb_queue_head_init(&dev->phy.scan_event_list);
 	skb_queue_head_init(&dev->coredump.msg_list);
-	INIT_LIST_HEAD(&dev->sta_poll_list);
-	spin_lock_init(&dev->sta_poll_lock);
 	init_waitqueue_head(&dev->reset_wait);
 	init_waitqueue_head(&dev->phy.roc_wait);
 

drivers/net/wireless/mediatek/mt76/mt7615/mac.c

@@ -387,10 +387,11 @@ static int mt7615_mac_fill_rx(struct mt7615_dev *dev, struct sk_buff *skb)
 		struct mt7615_sta *msta;
 
 		msta = container_of(status->wcid, struct mt7615_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);
 	}
 
 	if (mt76_is_mmio(&dev->mt76) && (rxd0 & csum_mask) == csum_mask &&
@@ -905,9 +906,9 @@ void mt7615_mac_sta_poll(struct mt7615_dev *dev)
 	int i;
 
 	INIT_LIST_HEAD(&sta_poll_list);
-	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);
 
 	while (!list_empty(&sta_poll_list)) {
 		bool clear = false;
@@ -915,9 +916,9 @@ void mt7615_mac_sta_poll(struct mt7615_dev *dev)
 		msta = list_first_entry(&sta_poll_list, struct mt7615_sta,
 					poll_list);
 
-		spin_lock_bh(&dev->sta_poll_lock);
+		spin_lock_bh(&dev->mt76.sta_poll_lock);
 		list_del_init(&msta->poll_list);
-		spin_unlock_bh(&dev->sta_poll_lock);
+		spin_unlock_bh(&dev->mt76.sta_poll_lock);
 
 		addr = mt7615_mac_wtbl_addr(dev, msta->wcid.idx) + 19 * 4;
 
@@ -1514,10 +1515,10 @@ static void mt7615_mac_add_txs(struct mt7615_dev *dev, void *data)
 	msta = container_of(wcid, struct mt7615_sta, wcid);
 	sta = wcid_to_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);
 
 	if (mt7615_mac_add_txs_skb(dev, msta, pid, txs_data))
 		goto out;

drivers/net/wireless/mediatek/mt76/mt7615/main.c

@@ -274,10 +274,10 @@ static void mt7615_remove_interface(struct ieee80211_hw *hw,
 
 	mt7615_mutex_release(dev);
 
-	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, &mvif->sta.wcid);
 }
@@ -705,10 +705,10 @@ void mt7615_mac_sta_remove(struct mt76_dev *mdev, struct ieee80211_vif *vif,
 	if (vif->type == NL80211_IFTYPE_STATION && !sta->tdls)
 		mt7615_mcu_add_bss_info(phy, vif, sta, false);
 
-	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);
-	spin_unlock_bh(&dev->sta_poll_lock);
+	spin_unlock_bh(&mdev->sta_poll_lock);
 
 	mt76_connac_power_save_sched(phy->mt76, &dev->pm);
 }

drivers/net/wireless/mediatek/mt76/mt7615/mt7615.h

@@ -262,9 +262,6 @@ struct mt7615_dev {
 	wait_queue_head_t reset_wait;
 	u32 reset_state;
 
-	struct list_head sta_poll_list;
-	spinlock_t sta_poll_lock;
-
 	struct {
 		u8 n_pulses;
 		u32 period;