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wifi: ipw2x00: don't call dev_kfree_skb() under spin_lock_irqsave() 

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

It should use dev_kfree_skb_irq() or dev_consume_skb_irq() instead.
The difference between them is free reason, dev_kfree_skb_irq() means
the SKB is dropped in error and dev_consume_skb_irq() means the SKB
is consumed in normal.

In this case, dev_kfree_skb() is called to free and drop the SKB when
it's reset, so replace it with dev_kfree_skb_irq(). Compile tested
only.

Fixes: 43f66a6ce8 ("Add ipw2200 wireless driver.")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20221208143826.2385218-1-yangyingliang@huawei.com
This commit is contained in:
Yang Yingliang 2022-12-08 22:38:26 +08:00 committed by Kalle Valo
parent c6015bf3ff
commit 45fc6d7461
1 changed files with 1 additions and 1 deletions
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2
drivers/net/wireless/intel/ipw2x00/ipw2200.c
View File

@ -3427,7 +3427,7 @@ static void ipw_rx_queue_reset(struct ipw_priv *priv,
dma_unmap_single(&priv->pci_dev->dev,
rxq->pool[i].dma_addr,
IPW_RX_BUF_SIZE, DMA_FROM_DEVICE);
dev_kfree_skb(rxq->pool[i].skb);
dev_kfree_skb_irq(rxq->pool[i].skb);
rxq->pool[i].skb = NULL;
}
list_add_tail(&rxq->pool[i].list, &rxq->rx_used);