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net: ethernet: stmicro: stmmac: first disable all queues and disconnect in release

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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@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Christian Marangi 2022-07-23 16:29:30 +02:00 committed by Jakub Kicinski
parent f9ec5723c3
commit 7028471edb
1 changed files with 2 additions and 2 deletions
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4
drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
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@ -3757,8 +3757,6 @@ static int stmmac_release(struct net_device *dev)
struct stmmac_priv *priv = netdev_priv(dev);
u32 chan;
netif_tx_disable(dev);
if (device_may_wakeup(priv->device))
phylink_speed_down(priv->phylink, false);
/* Stop and disconnect the PHY */
@ -3770,6 +3768,8 @@ static int stmmac_release(struct net_device *dev)
for (chan = 0; chan < priv->plat->tx_queues_to_use; chan++)
hrtimer_cancel(&priv->tx_queue[chan].txtimer);
netif_tx_disable(dev);
/* Free the IRQ lines */
stmmac_free_irq(dev, REQ_IRQ_ERR_ALL, 0);