netdev - Re: [PATCH v3] net, wireless: overwrite default_ethtool

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Date:	Fri, 11 Jan 2013 11:51:47 +0100
From:	Johannes Berg <johannes@...solutions.net>
To:	Stanislaw Gruszka <sgruszka@...hat.com>
Cc:	netdev@...r.kernel.org, "David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Ben Greear <greearb@...delatech.com>,
	Bjørn Mork <bjorn@...k.no>,
	linux-wireless@...r.kernel.org,
	Ben Hutchings <bhutchings@...arflare.com>,
	Michał Mirosław <mirqus@...il.com>
Subject: Re: [PATCH v3] net, wireless: overwrite default_ethtool_ops

On Fri, 2013-01-11 at 10:19 +0100, Stanislaw Gruszka wrote:
> Since:
> 
> commit 2c60db037034d27f8c636403355d52872da92f81
> Author: Eric Dumazet <edumazet@...gle.com>
> Date:   Sun Sep 16 09:17:26 2012 +0000
> 
>     net: provide a default dev->ethtool_ops
> 
> wireless core does not correctly assign ethtool_ops.
> 
> After alloc_netdev*() call, some cfg80211 drivers provide they own
> ethtool_ops, but some do not. For them, wireless core provide generic
> cfg80211_ethtool_ops, which is assigned in NETDEV_REGISTER notify call:
> 
>         if (!dev->ethtool_ops)
>                 dev->ethtool_ops = &cfg80211_ethtool_ops;
> 
> But after Eric's commit, dev->ethtool_ops is no longer NULL (on cfg80211
> drivers without custom ethtool_ops), but points to &default_ethtool_ops.
> 
> In order to fix the problem, provide function which will overwrite
> default_ethtool_ops and use it by wireless core.
> 
> Signed-off-by: Stanislaw Gruszka <sgruszka@...hat.com>

Acked-by: Johannes Berg <johannes@...solutions.net>

This will work nicely, clearly I didn't understand davem's suggestion :)

johannes

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