netdev - Re: [PATCH 01/11] staging: r8188eu: Remove pointless thread

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Message-ID: <52B4A8EF.1010109@lwfinger.net>
Date:	Fri, 20 Dec 2013 14:30:39 -0600
From:	Larry Finger <Larry.Finger@...inger.net>
To:	Greg KH <gregkh@...uxfoundation.org>
CC:	netdev@...r.kernel.org, devel@...verdev.osuosl.org
Subject: Re: [PATCH 01/11] staging: r8188eu: Remove pointless thread_exit
 macro

On 12/20/2013 01:18 PM, Greg KH wrote:
> On Fri, Dec 20, 2013 at 11:22:35AM -0600, Larry Finger wrote:
>> On 12/20/2013 10:58 AM, Greg KH wrote:
>>> With this series applied, I get a ton of "unused variable" warnings, can
>>> you please fix them up now too?
>>
>> Strange, but I don't get any. My compiler is gcc (SUSE Linux) 4.8.1 20130909
>> [gcc-4_8-branch revision 202388] from openSUSE 13.1. What version are you using?
>>
>
> I'm using an older version:
> 	$ gcc --version
> 	gcc (Gentoo 4.7.3-r1 p1.3, pie-0.5.5) 4.7.3
>
> Odd.  I'll move up to 4.8 and try that...
>
> Nope, same problem, here's one example line:
> 	drivers/staging/rtl8188eu/core/rtw_ap.c: In function ‘rtw_ap_inform_ch_switch’:
> 	drivers/staging/rtl8188eu/core/rtw_ap.c:1773:16: warning: unused variable ‘irqL’ [-Wunused-variable]
> 	  unsigned long irqL;
>
> This is x86-64, could that be an issue?

Mine is x86_64 as well.

I see the extra lines for "irqL" that gcc 4.7 finds but 4.8 misses. You should 
probably stay at 4.7 to catch the things that 4.8 misses.

Larry


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