2019-03-19 16:25:47

by Jeff Xie

Subject: [PATCH] net:mwl8k:move spin_lock_bh to spin_lock in tasklet

It is unnecessary to call spin_lock_bh in a tasklet.

Signed-off-by: Jeff Xie <[email protected]>
---
drivers/net/wireless/marvell/mwl8k.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/marvell/mwl8k.c b/drivers/net/wireless/marvell/mwl8k.c
index 8e4e9b6..21a86cc 100644
--- a/drivers/net/wireless/marvell/mwl8k.c
+++ b/drivers/net/wireless/marvell/mwl8k.c
@@ -4631,7 +4631,7 @@ static void mwl8k_tx_poll(unsigned long data)

limit = 32;

- spin_lock_bh(&priv->tx_lock);
+ spin_lock(&priv->tx_lock);

for (i = 0; i < mwl8k_tx_queues(priv); i++)
limit -= mwl8k_txq_reclaim(hw, i, limit, 0);
@@ -4641,7 +4641,7 @@ static void mwl8k_tx_poll(unsigned long data)
priv->tx_wait = NULL;
}

- spin_unlock_bh(&priv->tx_lock);
+ spin_unlock(&priv->tx_lock);

if (limit) {
writel(~MWL8K_A2H_INT_TX_DONE,
--
2.7.4

2019-03-20 07:10:13

by Menion

Subject: Re: [PATCH] net:mwl8k:move spin_lock_bh to spin_lock in tasklet

Is it possible that this solves this long standing issue? :
https://www.spinics.net/lists/linux-wireless/msg151171.html
Bye

Il giorno mar 19 mar 2019 alle ore 17:25 Jeff Xie
<[email protected]> ha scritto:
>
> It is unnecessary to call spin_lock_bh in a tasklet.
>
> Signed-off-by: Jeff Xie <[email protected]>
> ---
> drivers/net/wireless/marvell/mwl8k.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/net/wireless/marvell/mwl8k.c b/drivers/net/wireless/marvell/mwl8k.c
> index 8e4e9b6..21a86cc 100644
> --- a/drivers/net/wireless/marvell/mwl8k.c
> +++ b/drivers/net/wireless/marvell/mwl8k.c
> @@ -4631,7 +4631,7 @@ static void mwl8k_tx_poll(unsigned long data)
>
> limit = 32;
>
> - spin_lock_bh(&priv->tx_lock);
> + spin_lock(&priv->tx_lock);
>
> for (i = 0; i < mwl8k_tx_queues(priv); i++)
> limit -= mwl8k_txq_reclaim(hw, i, limit, 0);
> @@ -4641,7 +4641,7 @@ static void mwl8k_tx_poll(unsigned long data)
> priv->tx_wait = NULL;
> }
>
> - spin_unlock_bh(&priv->tx_lock);
> + spin_unlock(&priv->tx_lock);
>
> if (limit) {
> writel(~MWL8K_A2H_INT_TX_DONE,
> --
> 2.7.4
>