diff options
| author | Yang Yingliang <yangyingliang@huawei.com> | 2022-12-08 17:35:17 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-03-10 11:28:01 +0300 |
| commit | f8037542e5c45c70d315dfc0e5e778f85a54ccd1 (patch) | |
| tree | 3a7ffc2f46e4fb22dbfaba36fbb8ec798d7fad06 /drivers/net/wireless | |
| parent | 84bd9ae0d054e9def57b8ae153d39e6137d2cc3c (diff) | |
| download | linux-f8037542e5c45c70d315dfc0e5e778f85a54ccd1.tar.xz | |
wifi: rtl8xxxu: don't call dev_kfree_skb() under spin_lock_irqsave()
[ Upstream commit 4c2005ac87685907b3719b4f40215b578efd27c4 ]
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: 26f1fad29ad9 ("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>
Diffstat (limited to 'drivers/net/wireless')
| -rw-r--r-- | drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c index 799b03ec1980..c8b82c581011 100644 --- a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c +++ b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c @@ -5276,7 +5276,7 @@ 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); } |