linux-kernel - Re: [PATCH 1/2 V3] kaweth: Fix locking to be SMP-safe

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Message-ID: <49D4D37A.50504@lwfinger.net>
Date:	Thu, 02 Apr 2009 10:02:18 -0500
From:	Larry Finger <Larry.Finger@...inger.net>
To:	Herbert Xu <herbert@...dor.apana.org.au>
CC:	davem@...emloft.net, linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org, oliver@...kum.org
Subject: Re: [PATCH 1/2 V3] kaweth: Fix locking to be SMP-safe

Herbert Xu wrote:
> Larry Finger <Larry.Finger@...inger.net> wrote:
>> @@ -796,7 +795,7 @@ static int kaweth_start_xmit(struct sk_b
>>
>>        int res;
>>
>> -       spin_lock(&kaweth->device_lock);
>> +       spin_lock_irq(&kaweth->device_lock);
> 
> Should be irqsave unless you don't expect to be called via netpoll.

The .ndo_poll_controller callback is left at NULL in this driver. I believe the
patch to be OK.

Larry
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