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38 lines
1.3 KiB
Diff
38 lines
1.3 KiB
Diff
From 7028471edb646bfc532fec0973e50e784cdcb7c6 Mon Sep 17 00:00:00 2001
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From: Christian Marangi <ansuelsmth@gmail.com>
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Date: Sat, 23 Jul 2022 16:29:30 +0200
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Subject: [PATCH 2/5] net: ethernet: stmicro: stmmac: first disable all queues
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and disconnect in release
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Disable all queues and disconnect before tx_disable in stmmac_release to
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prevent a corner case where packet may be still queued at the same time
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tx_disable is called resulting in kernel panic if some packet still has
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to be processed.
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Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
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Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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---
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drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 4 ++--
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1 file changed, 2 insertions(+), 2 deletions(-)
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--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
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+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
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@@ -3837,8 +3837,6 @@ static int stmmac_release(struct net_dev
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struct stmmac_priv *priv = netdev_priv(dev);
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u32 chan;
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- netif_tx_disable(dev);
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-
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if (device_may_wakeup(priv->device))
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phylink_speed_down(priv->phylink, false);
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/* Stop and disconnect the PHY */
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@@ -3850,6 +3848,8 @@ static int stmmac_release(struct net_dev
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for (chan = 0; chan < priv->plat->tx_queues_to_use; chan++)
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hrtimer_cancel(&priv->tx_queue[chan].txtimer);
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+ netif_tx_disable(dev);
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+
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/* Free the IRQ lines */
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stmmac_free_irq(dev, REQ_IRQ_ERR_ALL, 0);
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