From: Pavel Machek <pavel@ucw.cz>
To: Cong Wang <xiyou.wangcong@gmail.com>,
davem@davemloft.net, Andrew Morton <akpm@osdl.org>
Cc: netdev@vger.kernel.org, linux-wireless@vger.kernel.org,
Kalle Valo <kvalo@codeaurora.org>
Subject: Re: [Patch net] wl1251: add a missing spin_lock_init()
Date: Fri, 21 Jul 2017 09:54:07 +0200 [thread overview]
Message-ID: <20170721075407.GA21902@amd> (raw)
In-Reply-To: <1499378437-4971-1-git-send-email-xiyou.wangcong@gmail.com>
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Hi!
On Thu 2017-07-06 15:00:37, Cong Wang wrote:
> This fixes the following kernel warning:
>
> [ 5668.771453] BUG: spinlock bad magic on CPU#0, kworker/u2:3/9745
> [ 5668.771850] lock: 0xce63ef20, .magic: 00000000, .owner: <none>/-1,
> .owner_cpu: 0
...
> by adding the missing spin_lock_init().
>
> Reported-by: Pavel Machek <pavel@ucw.cz>
> Cc: Kalle Valo <kvalo@codeaurora.org>
> Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Ping? This is pretty trivial bugfix for an ugly problem. It would be
nice to take it in.
> drivers/net/wireless/ti/wl1251/main.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/drivers/net/wireless/ti/wl1251/main.c b/drivers/net/wireless/ti/wl1251/main.c
> index bbf7604..1c539c8 100644
> --- a/drivers/net/wireless/ti/wl1251/main.c
> +++ b/drivers/net/wireless/ti/wl1251/main.c
> @@ -1571,6 +1571,7 @@ struct ieee80211_hw *wl1251_alloc_hw(void)
>
> wl->state = WL1251_STATE_OFF;
> mutex_init(&wl->mutex);
> + spin_lock_init(&wl->wl_lock);
>
> wl->tx_mgmt_frm_rate = DEFAULT_HW_GEN_TX_RATE;
> wl->tx_mgmt_frm_mod = DEFAULT_HW_GEN_MODULATION_TYPE;
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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next prev parent reply other threads:[~2017-07-21 7:54 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-07-06 22:00 [Patch net] wl1251: add a missing spin_lock_init() Cong Wang
[not found] ` <1499378437-4971-1-git-send-email-xiyou.wangcong-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2017-07-07 16:59 ` Pavel Machek
2017-07-21 7:54 ` Pavel Machek [this message]
2017-07-21 8:00 ` Kalle Valo
2017-07-27 10:59 ` [net] " Kalle Valo
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