From mboxrd@z Thu Jan  1 00:00:00 1970
From: Joe Perches <joe@perches.com>
Subject: Re: [PATCH 2/2] Compiler Attributes: auxdisplay: panel: use
 __fallthrough
Date: Sun, 21 Oct 2018 11:11:36 -0700
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References: <20181021171414.22674-1-miguel.ojeda.sandonis@gmail.com>
         <20181021171414.22674-3-miguel.ojeda.sandonis@gmail.com>
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To: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>, Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: linux-kernel@vger.kernel.org, Dan Carpenter <dan.carpenter@oracle.com>, Andreas Dilger <adilger.kernel@dilger.ca>, Masahiro Yamada <yamada.masahiro@socionext.com>, Michal Marek <michal.lkml@markovi.net>, Steven Rostedt <rostedt@goodmis.org>, Mauro Carvalho Chehab <mchehab+samsung@kernel.org>, Olof Johansson <olof@lxom.net>, Konstantin Ryabitsev <konstantin@linuxfoundation.org>, "David S . Miller" <davem@davemloft.net>, Andrey Ryabinin <aryabinin@virtuozzo.com>, Kees Cook <keescook@chromium.org>, Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@kernel.org>, Paul Lawrence <paullawrence@google.com>, Sandipan Das <sandipan@linux.vnet.ibm.com>, Andrey Konovalov <andreyknvl@google.com>, David Woodhouse <dwmw2@infradead.org>, Will Deacon <wi>
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On Sun, 2018-10-21 at 19:14 +0200, Miguel Ojeda wrote:
> Let gcc know these cases are meant to fall through to the next label
> by annotating them with the new __fallthrough statement attribute;
> and remove the comment since it conveys the same information
> (which was also parsed by gcc to suppress the warning).

Instead of many individual conversion patches,
perhaps a script to do all the conversions at once.

Maybe:

pattern='(?:\/\*\s*fall(?:\s*|\s*\-\s*)thr(?:u|ough)\s*\*\/|\/\/\s*fall\s*thr(?:u|ough)\s*$)'
git grep -P -i --name-only "$pattern" -- '*.[ch]' |
    xargs perl -p -i -e "s/$pattern/__fallthrough;/gi"