linux-kernel - Re: [PATCH 2/2] xen-netfront: call netif_start_queue() on xennet

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Message-ID: <4888CA2A.1060509@garzik.org>
Date:	Thu, 24 Jul 2008 14:30:02 -0400
From:	Jeff Garzik <jeff@...zik.org>
To:	Jeremy Fitzhardinge <jeremy@...p.org>
CC:	Eduardo Habkost <ehabkost@...hat.com>, Ingo Molnar <mingo@...e.hu>,
	linux-kernel@...r.kernel.org, NetDev <netdev@...r.kernel.org>,
	David Miller <davem@...emloft.net>
Subject: Re: [PATCH 2/2] xen-netfront: call netif_start_queue() on xennet_open()

Jeremy Fitzhardinge wrote:
> Eduardo Habkost wrote:
>> xen-netfront was waking the queue before calling netif_start_queue(),
>> triggering the BUG_ON() on __netif_schedule().
>>
>> Signed-off-by: Eduardo Habkost <ehabkost@...hat.com>
>>   
> Ok,
> Acked-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@...rix.com>
> 
> but Ingo, do you want to pick this up?  You're gathering a collection of 
> these patches anyway, or should we kick it over to Dave/Jeff?
> 
>    J
> 
>> ---
>>  drivers/net/xen-netfront.c |    2 +-
>>  1 files changed, 1 insertions(+), 1 deletions(-)
>>
>> diff --git a/drivers/net/xen-netfront.c b/drivers/net/xen-netfront.c
>> index 902bbe7..c749bdb 100644
>> --- a/drivers/net/xen-netfront.c
>> +++ b/drivers/net/xen-netfront.c
>> @@ -329,7 +329,7 @@ static int xennet_open(struct net_device *dev)
>>      }
>>      spin_unlock_bh(&np->rx_lock);
>>  
>> -    xennet_maybe_wake_tx(dev);
>> +    netif_start_queue(dev);

This is clearly a net driver change, it should go this way...

	Jeff



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