queue-5.10/lan78xx-remove-unused-pause-frame-queue.patch

From cb27fbc2dc6f12828122a6336ed4dadbf6d7001d Mon Sep 17 00:00:00 2001
From: Sasha Levin <sashal@kernel.org>
Date: Tue, 24 Aug 2021 19:56:07 +0100
Subject: lan78xx: Remove unused pause frame queue

From: John Efstathiades <john.efstathiades@pebblebay.com>

[ Upstream commit 40b8452fa8b4567ab7d862c7d4c3d02f635f17fd ]

Remove the pause frame queue from the driver. It is initialised
but not actually used.

Signed-off-by: John Efstathiades <john.efstathiades@pebblebay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Stable-dep-of: f1e2f0ce704e ("net: usb: lan78xx: scan all MDIO addresses on LAN7801")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/usb/lan78xx.c | 9 ---------
 1 file changed, 9 deletions(-)

diff --git a/drivers/net/usb/lan78xx.c b/drivers/net/usb/lan78xx.c
index fd5fa64cbe932..41d55852bbf33 100644
--- a/drivers/net/usb/lan78xx.c
+++ b/drivers/net/usb/lan78xx.c
@@ -379,7 +379,6 @@ struct lan78xx_net {
 	struct sk_buff_head	rxq;
 	struct sk_buff_head	txq;
 	struct sk_buff_head	done;
-	struct sk_buff_head	rxq_pause;
 	struct sk_buff_head	txq_pend;
 
 	struct tasklet_struct	bh;
@@ -2990,8 +2989,6 @@ static int lan78xx_stop(struct net_device *net)
 
 	usb_kill_urb(dev->urb_intr);
 
-	skb_queue_purge(&dev->rxq_pause);
-
 	/* deferred work (task, timer, softirq) must also stop.
 	 * can't flush_scheduled_work() until we drop rtnl (later),
 	 * else workers could deadlock; so make workers a NOP.
@@ -3291,11 +3288,6 @@ static void lan78xx_skb_return(struct lan78xx_net *dev, struct sk_buff *skb)
 {
 	int status;
 
-	if (test_bit(EVENT_RX_PAUSED, &dev->flags)) {
-		skb_queue_tail(&dev->rxq_pause, skb);
-		return;
-	}
-
 	dev->net->stats.rx_packets++;
 	dev->net->stats.rx_bytes += skb->len;
 
@@ -3955,7 +3947,6 @@ static int lan78xx_probe(struct usb_interface *intf,
 	skb_queue_head_init(&dev->rxq);
 	skb_queue_head_init(&dev->txq);
 	skb_queue_head_init(&dev->done);
-	skb_queue_head_init(&dev->rxq_pause);
 	skb_queue_head_init(&dev->txq_pend);
 	mutex_init(&dev->phy_mutex);
 	mutex_init(&dev->dev_mutex);
-- 
2.51.0