diff options
| author | Chengfeng Ye <dg573847474@gmail.com> | 2023-09-26 19:13:23 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-10-05 10:58:12 +0300 |
| commit | 058cbee52ccd7be77e373d31a4f14670cfd32018 (patch) | |
| tree | 25d420166e854875d59000133599c966f128bea7 /drivers/staging/ks7010 | |
| parent | eb507641d0be6a4fb2f06cd7325953ba5e4f6c3e (diff) | |
| download | linux-058cbee52ccd7be77e373d31a4f14670cfd32018.tar.xz | |
staging: ks7010: disable bh on tx_dev_lock
As &priv->tx_dev.tx_dev_lock is also acquired by xmit callback which
could be call from timer under softirq context, use spin_lock_bh()
on it to prevent potential deadlock.
hostif_sme_work()
--> hostif_sme_set_pmksa()
--> hostif_mib_set_request()
--> ks_wlan_hw_tx()
--> spin_lock(&priv->tx_dev.tx_dev_lock)
ks_wlan_start_xmit()
--> hostif_data_request()
--> ks_wlan_hw_tx()
--> spin_lock(&priv->tx_dev.tx_dev_lock)
Signed-off-by: Chengfeng Ye <dg573847474@gmail.com>
Link: https://lore.kernel.org/r/20230926161323.41928-1-dg573847474@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/ks7010')
| -rw-r--r-- | drivers/staging/ks7010/ks7010_sdio.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/staging/ks7010/ks7010_sdio.c b/drivers/staging/ks7010/ks7010_sdio.c index 9fb118e77a1f..f1d44e4955fc 100644 --- a/drivers/staging/ks7010/ks7010_sdio.c +++ b/drivers/staging/ks7010/ks7010_sdio.c @@ -395,9 +395,9 @@ int ks_wlan_hw_tx(struct ks_wlan_private *priv, void *p, unsigned long size, priv->hostt.buff[priv->hostt.qtail] = le16_to_cpu(hdr->event); priv->hostt.qtail = (priv->hostt.qtail + 1) % SME_EVENT_BUFF_SIZE; - spin_lock(&priv->tx_dev.tx_dev_lock); + spin_lock_bh(&priv->tx_dev.tx_dev_lock); result = enqueue_txdev(priv, p, size, complete_handler, skb); - spin_unlock(&priv->tx_dev.tx_dev_lock); + spin_unlock_bh(&priv->tx_dev.tx_dev_lock); if (txq_has_space(priv)) queue_delayed_work(priv->wq, &priv->rw_dwork, 0); |