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

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Date:	Mon, 13 Aug 2012 18:15:31 +0100
From:	Ben Hutchings <bhutchings@...arflare.com>
To:	Jiri Pirko <jiri@...nulli.us>
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

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.

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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