wifi: rtl8xxxu: don't call dev_kfree_skb() under spin_lock_irqsave()

[ Upstream commit 4c2005ac87 ]

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 shutdown, so replace it with dev_kfree_skb_irq(). Compile tested
only.

Fixes: 26f1fad29a ("New driver: rtl8xxxu (mac80211)")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Reviewed-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20221208143517.2383424-1-yangyingliang@huawei.com
Signed-off-by: Sasha Levin <sashal@kernel.org>

This commit is contained in:

Yang Yingliang

2022-12-08 22:35:17 +08:00

committed by

Greg Kroah-Hartman

parent 9c8f50c743

commit 75f4eed70a

1 changed files with 1 additions and 1 deletions

									
										drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c
									
		+1
		-1
	
												View File
												
				@@ -5184,7 +5184,7 @@ static void rtl8xxxu_queue_rx_urb(struct rtl8xxxu_priv *priv,

						pending = priv->rx_urb_pending_count;

					} else {

						skb = (struct sk_buff *)rx_urb->urb.context;

						dev_kfree_skb(skb);

						dev_kfree_skb_irq(skb);

						usb_free_urb(&rx_urb->urb);

					}