wifi: libertas_tf: don't call kfree_skb() under spin_lock_irqsave()

[ Upstream commit 9388ce97b98216833c969191ee6df61a7201d797 ]

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: 464eba015cc6 ("libertas_tf: use irqsave() in USB's complete callback")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20221207150008.111743-2-yangyingliang@huawei.com
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/net/wireless/marvell/libertas_tf/if_usb.c b/drivers/net/wireless/marvell/libertas_tf/if_usb.c
index b30bcb28503aef7f469ff03d689f89073602119c..f47db95299f37939cbf9b13aeb14baa76fe79b3c 100644 (file)
--- a/drivers/net/wireless/marvell/libertas_tf/if_usb.c
+++ b/drivers/net/wireless/marvell/libertas_tf/if_usb.c
@@ -613,7 +613,7 @@ static inline void process_cmdrequest(int recvlength, uint8_t *recvbuff,
        spin_lock_irqsave(&priv->driver_lock, flags);
        memcpy(priv->cmd_resp_buff, recvbuff + MESSAGE_HEADER_LEN,
               recvlength - MESSAGE_HEADER_LEN);
-       kfree_skb(skb);
+       dev_kfree_skb_irq(skb);
        lbtf_cmd_response_rx(priv);
        spin_unlock_irqrestore(&priv->driver_lock, flags);
 }