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net: ethernet: dnet: don't call dev_kfree_skb() under spin_lock_irqsave()

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[ Upstream commit f07fadcbee2a5e84caa67c7c445424200bffb60b ]

It is not allowed to call kfree_skb() or consume_skb() from hardware
interrupt context or with hardware interrupts being disabled.

In this case, the lock is used to protected 'bp', so we can move
dev_kfree_skb() after the spin_unlock_irqrestore().

Fixes: 4796417417 ("dnet: Dave DNET ethernet controller driver (updated)")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Yang Yingliang 2022-12-08 22:21:45 +08:00 committed by Greg Kroah-Hartman
parent 3b748ba07b
commit 20dd873605
1 changed files with 2 additions and 2 deletions
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4
drivers/net/ethernet/dnet.c
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@ -553,11 +553,11 @@ static netdev_tx_t dnet_start_xmit(struct sk_buff *skb, struct net_device *dev)
skb_tx_timestamp(skb);
spin_unlock_irqrestore(&bp->lock, flags);
/* free the buffer */
dev_kfree_skb(skb);
spin_unlock_irqrestore(&bp->lock, flags);
return NETDEV_TX_OK;
}