linux-kernel - Re: [PATCH 1/2] of: remove extraneous 'const' in typedef

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Date:   Thu, 11 May 2017 17:03:49 +0200
From:   Arnd Bergmann <arnd@...db.de>
To:     Rob Herring <robh+dt@...nel.org>
Cc:     Frank Rowand <frowand.list@...il.com>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/2] of: remove extraneous 'const' in typedef

On Thu, May 11, 2017 at 4:44 PM, Rob Herring <robh+dt@...nel.org> wrote:
> On Thu, May 11, 2017 at 7:24 AM, Arnd Bergmann <arnd@...db.de> wrote:
>> One change that was meant to address a sparse warning turned out
>> to cause hundreds of new gcc-7 warnings:
>
> I guess you are the only one on gcc-7.

It was just released last week or so. I actually had been using it for
a while but accidentally disabled a lot of the warning output until now
some others started using it too and asked me about it.

>> include/linux/of_irq.h:11:13: error: type qualifiers ignored on function return type [-Werror=ignored-qualifiers]
>>
>> After reverting the change, the gcc warnings are gone again, and I
>> can't reproduce the sparse warnings either.
>
> Humm, maybe different sparse versions? I'm on 0.5.0.

I have v0.5.0-183-gfbbfc73. To clarify, I did not get a sparse warning after my
patch, I did not try reverting your patch first.

      Arnd