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authorChristian Marangi <ansuelsmth@gmail.com>2022-07-23 16:29:30 +0200
committerJakub Kicinski <kuba@kernel.org>2022-07-25 19:38:56 -0700
commit7028471edb646bfc532fec0973e50e784cdcb7c6 (patch)
tree0de420867e9a880f928c1f29e1fd2904dddd2f66 /drivers/net
parentf9ec5723c3dbfcede9c7b0dcdf85e401ce16316c (diff)
downloadlinux-7028471edb646bfc532fec0973e50e784cdcb7c6.tar.bz2
net: ethernet: stmicro: stmmac: first disable all queues and disconnect in release
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>
Diffstat (limited to 'drivers/net')
-rw-r--r--drivers/net/ethernet/stmicro/stmmac/stmmac_main.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index 5d08d09a9d51..5bd2e4d47ac5 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -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);