netdev - Re: [PATCH net-next] mac80211: silent build warnings

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Date:	Thu, 8 Jan 2015 15:45:12 +0800
From:	Ying Xue <ying.xue@...driver.com>
To:	Johannes Berg <johannes@...solutions.net>
CC:	<netdev@...r.kernel.org>, <linux-wireless@...r.kernel.org>
Subject: Re: [PATCH net-next] mac80211: silent build warnings

On 01/08/2015 03:41 PM, Johannes Berg wrote:
> On Thu, 2015-01-08 at 15:04 +0800, Ying Xue wrote:
>> Silent the following build warnings:
>>
>> net/mac80211/mlme.c: In function ‘ieee80211_rx_mgmt_beacon’:
>> net/mac80211/mlme.c:1348:3: warning: ‘pwr_level_cisco’ may be used uninitialized in this function [-Wuninitialized]
>> net/mac80211/mlme.c:1315:6: note: ‘pwr_level_cisco’ was declared here
> 
> We seem to get this every year or so... just upgrade your compiler and
> it will be smart enough to prove that it's wrong here.
> 
> I really *don't* want to shut up the compiler forcefully since it will
> cause modern compilers to *not* warn if it actually *is* unused - and 0
> is not a useful value - this code is tricky enough and we want compiler
> help in case we need to modify it in the future.
> 

Thank for your explanation, and please ignore the noise.

Regards,
Ying

> johannes
> 
> 
> 

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