[PATCH AUTOSEL 5.10 41/46] net: ethernet: stmicro: stmmac: first disable all queues and disconnect in release

[Sasha Levin]

From: Christian Marangi <ansuelsmth at gmail.com>

[ Upstream commit 7028471edb646bfc532fec0973e50e784cdcb7c6 ]

Disable all queues and disconnect before tx_disable in stmmac_release to
prevent a corner case where packet may be still queued at the same time
tx_disable is called resulting in kernel panic if some packet still has
to be processed.

Signed-off-by: Christian Marangi <ansuelsmth at gmail.com>
Signed-off-by: Jakub Kicinski <kuba at kernel.org>
Signed-off-by: Sasha Levin <sashal at kernel.org>
---
 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index 27b7bb64a028..46c2db220542 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -3001,6 +3001,8 @@ static int stmmac_release(struct net_device *dev)
 	for (chan = 0; chan < priv->plat->tx_queues_to_use; chan++)
 		del_timer_sync(&priv->tx_queue[chan].txtimer);
 
+	netif_tx_disable(dev);
+
 	/* Free the IRQ lines */
 	free_irq(dev->irq, dev);
 	if (priv->wol_irq != dev->irq)
-- 
2.35.1