netdev - Re: [patch net-next 15/16] net: remove usage of dev->master

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Message-ID: <20120813173141.GB1808@minipsycho.orion>
Date:	Mon, 13 Aug 2012 19:31:41 +0200
From:	Jiri Pirko <jiri@...nulli.us>
To:	Ben Hutchings <bhutchings@...arflare.com>
Cc:	netdev@...r.kernel.org, davem@...emloft.net, edumazet@...gle.com,
	faisal.latif@...el.com, roland@...nel.org, sean.hefty@...el.com,
	hal.rosenstock@...il.com, fubar@...ibm.com, andy@...yhouse.net,
	divy@...lsio.com, jitendra.kalsaria@...gic.com,
	sony.chacko@...gic.com, linux-driver@...gic.com, kaber@...sh.net,
	ursula.braun@...ibm.com, blaschka@...ux.vnet.ibm.com,
	linux390@...ibm.com, shemminger@...tta.com, therbert@...gle.com,
	xiyou.wangcong@...il.com, joe@...ches.com,
	gregory.v.rose@...el.com, john.r.fastabend@...el.com,
	linux-rdma@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-s390@...r.kernel.org, bridge@...ts.linux-foundation.org,
	fbl@...hat.com
Subject: Re: [patch net-next 15/16] net: remove usage of dev->master

Mon, Aug 13, 2012 at 07:15:31PM CEST, bhutchings@...arflare.com wrote:
>On Mon, 2012-08-13 at 17:27 +0200, Jiri Pirko wrote:
>> Signed-off-by: Jiri Pirko <jiri@...nulli.us>
>> ---
>>  net/core/dev.c |    4 ++--
>>  1 file changed, 2 insertions(+), 2 deletions(-)
>> 
>> diff --git a/net/core/dev.c b/net/core/dev.c
>> index c0f9adb..8977404 100644
>> --- a/net/core/dev.c
>> +++ b/net/core/dev.c
>> @@ -5461,8 +5461,8 @@ static void rollback_registered_many(struct list_head *head)
>>  		if (dev->netdev_ops->ndo_uninit)
>>  			dev->netdev_ops->ndo_uninit(dev);
>>  
>> -		/* Notifier chain MUST detach us from master device. */
>> -		WARN_ON(dev->master);
>> +		/* Notifier chain MUST detach us all upper devices. */
>> +		WARN_ON(netdev_has_any_upper_dev(dev));
>>  
>>  		/* Remove entries from kobject tree */
>>  		netdev_unregister_kobject(dev);
>
>I think this should be folded into patch 1, since that already ensures
>that any master device is included in the upper device list.

Right, I will squash it into patch 1

>
>Ben.
>
>-- 
>Ben Hutchings, Staff Engineer, Solarflare
>Not speaking for my employer; that's the marketing department's job.
>They asked us to note that Solarflare product names are trademarked.
>
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