From: Yang Yingliang <yangyingliang@huawei.com>
Date: Wed, 7 Dec 2022 23:00:05 +0800
Subject: [PATCH] wifi: libertas_tf: don't call kfree_skb() under
 spin_lock_irqsave()
References: bsc#1012628
Patch-mainline: 6.2.3
Git-commit: 9388ce97b98216833c969191ee6df61a7201d797

[ 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: fc75122fabb5 ("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>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/net/wireless/marvell/libertas_tf/if_usb.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/wireless/marvell/libertas_tf/if_usb.c b/drivers/net/wireless/marvell/libertas_tf/if_usb.c
index 75b5319d..1750f5e9 100644
--- 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);
 }
-- 
2.35.3