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Commit 0c4f20c8 authored by Yang Yingliang's avatar Yang Yingliang Committed by Greg Kroah-Hartman
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wifi: wl3501_cs: don't call kfree_skb() under spin_lock_irqsave() 



[ Upstream commit 44bacbdf9066c590423259dbd6d520baac99c1a8 ]

It is not allowed to call kfree_skb() from hardware interrupt
context or with interrupts being disabled. So replace kfree_skb()
with dev_kfree_skb_irq() under spin_lock_irqsave(). Compile
tested only.

Fixes: 1da177e4 ("Linux-2.6.12-rc2")
Signed-off-by: default avatarYang Yingliang <yangyingliang@huawei.com>
Signed-off-by: default avatarKalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20221207150453.114742-1-yangyingliang@huawei.com


Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
parent 14ba31bb

drivers/net/wireless/wl3501_cs.c

+1 −1
Original line number Diff line number Diff line
@@ -1328,7 +1328,7 @@ static netdev_tx_t wl3501_hard_start_xmit(struct sk_buff *skb, 
	} else {

		++dev->stats.tx_packets;

		dev->stats.tx_bytes += skb->len;

		kfree_skb(skb);

		dev_kfree_skb_irq(skb);



		if (this->tx_buffer_cnt < 2)

			netif_stop_queue(dev);