linux-kernel - Re: [PATCH] net: mac80211: fix compilation warning

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Date:	Sat, 05 Mar 2011 10:30:05 -0600
From:	Larry Finger <Larry.Finger@...inger.net>
To:	Jovi Zhang <bookjovi@...il.com>
CC:	Ben Hutchings <bhutchings@...arflare.com>,
	"John W. Linville" <linville@...driver.com>,
	Johannes Berg <johannes@...solutions.net>,
	"David S. Miller" <davem@...emloft.net>,
	"open list:NETWORKING [WIREL..." <linux-wireless@...r.kernel.org>,
	"open list:NETWORKING [GENERAL]" <netdev@...r.kernel.org>,
	open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] net: mac80211: fix compilation warning

On 03/05/2011 07:52 AM, Jovi Zhang wrote:
> On Sat, Mar 5, 2011 at 8:31 PM, Ben Hutchings<bhutchings@...arflare.com>  wrote:
>> On Wed, 2011-03-02 at 18:32 -0500, bookjovi@...il.com wrote:
>>> From: Jovi Zhang<bookjovi@...il.com>
>>>
>>> this commit fix compilation warning as following:
>>> net/mac80211/tx.c:1753: warning: unused variable mppath
>> [...]
>>
>> You clearly didn't try building this with CONFIG_MAC80211_MESH enabled.
>>
> Sorry, indeed, maybe should be like this:
>
> +#ifdef CONFIG_MAC80211_MESH
>         struct mesh_path *mppath = NULL;
> +#endif

Linville likes "struct mesh_path *mppath __maybe_unused = NULL;" over the ifdef 
form.

Larry
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