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Date:   Wed, 8 Sep 2021 13:19:01 +0000
From:   Al Viro <viro@zeniv.linux.org.uk>
To:     Guenter Roeck <linux@roeck-us.net>
Cc:     Arnd Bergmann <arnd@kernel.org>,
        Geert Uytterhoeven <geert@linux-m68k.org>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        "David S. Miller" <davem@davemloft.net>,
        Dmitry Torokhov <dmitry.torokhov@gmail.com>,
        Christian Koenig <christian.koenig@amd.com>,
        Huang Rui <ray.huang@amd.com>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        linux-sparc <sparclinux@vger.kernel.org>,
        Martin Sebor <msebor@gcc.gnu.org>
Subject: Re: [PATCH] Enable '-Werror' by default for all kernel builds
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On Wed, Sep 08, 2021 at 05:42:30AM -0700, Guenter Roeck wrote:

> Oddly enough, a memcpy on the 'rtc' variable doesn't fail,
> neither with nor without volatile. Something else is going on.

While we are at it, would memcpy_fromio() complain?  Seeing that
this is what's really intended there...