linux-kernel - Re: [PATCH] video: fbdev: s3c-fb: Mark expected switch fall-throughs

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Date:   Tue, 25 Jun 2019 10:37:54 -0700
From:   Joe Perches <joe@...ches.com>
To:     "Gustavo A. R. Silva" <gustavo@...eddedor.com>,
        Jingoo Han <jingoohan1@...il.com>,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
Cc:     linux-fbdev@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org, Kees Cook <keescook@...omium.org>,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Michal Marek <michal.lkml@...kovi.net>,
        linux-kbuild <linux-kbuild@...r.kernel.org>
Subject: Re: [PATCH] video: fbdev: s3c-fb: Mark expected switch fall-throughs

On Tue, 2019-06-25 at 12:06 -0500, Gustavo A. R. Silva wrote:
> 
> On 6/25/19 11:52 AM, Joe Perches wrote:
> > On Tue, 2019-06-25 at 11:01 -0500, Gustavo A. R. Silva wrote:
> > > In preparation to enabling -Wimplicit-fallthrough, mark switch
> > > cases where we are expecting to fall through.
> > []
> > > This patch is part of the ongoing efforts to enable
> > > -Wimplicit-fallthrough.
> > 
> > Just enable the thing already.
> > 
> > If you stopped trying to do it all yourself, others
> 
> What are you talking about?
> 
> Anyone can enable it, I'm adding this to every commit:
> 
> Warning level 3 was used: -Wimplicit-fallthrough=3

No one does that by default and almost no one
is helping eliminate these.  Not even on th

Almost no one uses make W=<levels> either as it's
generally extremely noisy and can emit a lot of
false positives.

> And I'll send a PR with a proper patch for the Makefile
> during the next merge window.

That's great.

> If had the power I would have enabled this option since day 1,
> so every developer can take care of their own code.

You have always had the power to send a patch.

You also seem to believe the build needs to be
completely clean before enabling the switch.

I don't.

> Lately, you are not being of much help, Joe.

<smile> What kind of help are you expecting?

I'm not submitting patches adding fallthough comments
as I think that's not a good form.  I've said so
repeatedly.

I believe I suggested months ago you default enable
the compiler switch.

So it's up to you to either do it or not.