2022-12-07 15:07:01

by Yang Yingliang

[permalink] [raw]
Subject: [PATCH v2 4/4] libertas/cmdresp: don't call kfree_skb() under spin_lock_irqsave()

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: f52b041aed77 ("libertas: Add spinlock to avoid race condition")
Signed-off-by: Yang Yingliang <[email protected]>
---
drivers/net/wireless/marvell/libertas/cmdresp.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/wireless/marvell/libertas/cmdresp.c b/drivers/net/wireless/marvell/libertas/cmdresp.c
index cb515c5584c1..74cb7551f427 100644
--- a/drivers/net/wireless/marvell/libertas/cmdresp.c
+++ b/drivers/net/wireless/marvell/libertas/cmdresp.c
@@ -48,7 +48,7 @@ void lbs_mac_event_disconnected(struct lbs_private *priv,

/* Free Tx and Rx packets */
spin_lock_irqsave(&priv->driver_lock, flags);
- kfree_skb(priv->currenttxskb);
+ dev_kfree_skb_irq(priv->currenttxskb);
priv->currenttxskb = NULL;
priv->tx_pending_len = 0;
spin_unlock_irqrestore(&priv->driver_lock, flags);
--
2.25.1