linux-kernel - Re: [PATCH] lightnvm: remove unused rq parameter of nvme_nvm

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Message-ID: <CAK8P3a0Y0pHyXKrNDhrAmKhvDse686TRFYbEqBeT9X_KcG_MjQ@mail.gmail.com>
Date:   Mon, 8 May 2017 09:51:56 +0200
From:   Arnd Bergmann <arnd@...db.de>
To:     Geert Uytterhoeven <geert@...ux-m68k.org>
Cc:     Jens Axboe <axboe@...com>,
        Javier González <javier@...xlabs.com>,
        Matias Bjørling <matias@...xlabs.com>,
        Keith Busch <keith.busch@...el.com>,
        Christoph Hellwig <hch@....de>,
        Sagi Grimberg <sagi@...mberg.me>,
        linux-nvme@...ts.infradead.org,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] lightnvm: remove unused rq parameter of
 nvme_nvm_rqtocmd() to kill warning

On Mon, May 8, 2017 at 9:25 AM, Geert Uytterhoeven <geert@...ux-m68k.org> wrote:
> Hi Jens,
>
> On Mon, May 8, 2017 at 3:53 AM, Jens Axboe <axboe@...com> wrote:
>> On 05/07/2017 08:14 AM, Geert Uytterhoeven wrote:
>>> With gcc 4.1.2:
>>
>> Wow, that's ancient.
>
> But it helps to find things like this, and improve the code ;-)

For reference, the warning shows up in gcc-4.2 and 4.3 as well, but
not in gcc-4.4 or
higher unless you disable all optimizations (e.g. gcc-7.1 -O0 warns).

      Arnd