netdev - Re: [PATCH net-next v3 2/3] net: fsl: Allow most drivers to be built with COMPILE

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Date:   Thu, 17 Nov 2016 11:27:38 -0500 (EST)
From:   David Miller <davem@...emloft.net>
To:     arnd@...db.de
Cc:     lkp@...el.com, f.fainelli@...il.com, kbuild-all@...org,
        netdev@...r.kernel.org, mw@...ihalf.com,
        gregory.clement@...e-electrons.com, Shaohui.Xie@...escale.com
Subject: Re: [PATCH net-next v3 2/3] net: fsl: Allow most drivers to be
 built with COMPILE_TEST

From: Arnd Bergmann <arnd@...db.de>
Date: Thu, 17 Nov 2016 11:47:02 +0100

> On Thursday, November 17, 2016 9:38:23 AM CET Fengguang Wu wrote:
>> include/asm-generic/io.h conditionally defines iounmap() to be an
>> empty inline function, which may explain the warning on sh4.
>> 
>> General speaking, it's a false warning. The solution could be to teach
>> the robot to ignore such 'unused variable' warnings in non-x86 archs.
> 
> I think we should change the iounmap stub macro into an inline function.

Agreed.