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

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Date:   Tue, 25 Jun 2019 13:18:22 -0700
From:   Kees Cook <keescook@...omium.org>
To:     Joe Perches <joe@...ches.com>
Cc:     "Gustavo A. R. Silva" <gustavo@...eddedor.com>,
        Jingoo Han <jingoohan1@...il.com>,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
        linux-fbdev@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.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, Jun 25, 2019 at 10:49:01AM -0700, Joe Perches wrote:
> On Tue, 2019-06-25 at 10:31 -0700, Kees Cook wrote:
> > On Tue, Jun 25, 2019 at 09:52:23AM -0700, 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.
> > 
> > Linus has been pretty clear about not wanting warning options enabled
> > without first fixing all the cases it warns about first.
> 
> Hey Kees.
> 
> I don't recall that particular tidbit.  Got a link?  

It was spread out over the discussion around removing __deprecated,
about enabling -Wvla, and in person at the kernel summit when asking
what approach to take for -Wimplicit-fallthrough.

-- 
Kees Cook