Date: Tue, 20 Jun 2017 14:10:11 +0200
From: Pavel Machek <pavel@ucw.cz>
To: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Cc: Benjamin Gaignard <benjamin.gaignard@linaro.org>,
        linaro-kernel@lists.linaro.org,
        adi-buildroot-devel@lists.sourceforge.net,
        Alessandro Zummo <a.zummo@towertech.it>,
        Gregory Clement <gregory.clement@free-electrons.com>,
        Ingo Molnar <mingo@redhat.com>, Jason Cooper <jason@lakedaemon.net>,
        John Stultz <john.stultz@linaro.org>,
        linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org,
        Linus Walleij <linus.walleij@linaro.org>,
        Michael Chan <michael.chan@broadcom.com>, netdev@vger.kernel.org,
        rtc-linux@googlegroups.com,
        Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>,
        Support Opensource <support.opensource@diasemi.com>,
        Thomas Gleixner <tglx@linutronix.de>, x86@kernel.org,
        Baruch Siach <baruch@tkos.co.il>,
        Hans Ulli Kroll <ulli.kroll@googlemail.com>,
        Vladimir Zapolskiy <vz@mleia.com>,
        Sylvain Lemieux <slemieux.tyco@gmail.com>,
        Barry Song <baohua@kernel.org>,
        Maxime Ripard <maxime.ripard@free-electrons.com>,
        Chen-Yu Tsai <wens@csie.org>,
        Thierry Reding <thierry.reding@gmail.com>,
        Jonathan Hunter <jonathanh@nvidia.com>, linux-tegra@vger.kernel.org,
        patches@opensource.wolfsonmicro.com,
        "Rafael J. Wysocki" <rjw@rjwysocki.net>,
        Len Brown <len.brown@intel.com>, linux-pm@vger.kernel.org
Subject: Re: [PATCH 00/51] rtc: stop using rtc deprecated functions
Message-ID: <20170620121011.GA13221@amd>
References: <1497951359-13334-1-git-send-email-benjamin.gaignard@linaro.org>
 <20170620100348.zh4ygvjjgnhxvmvl@piout.net>
MIME-Version: 1.0
Content-Type: multipart/signed; micalg=pgp-sha1;
        protocol="application/pgp-signature"; boundary="UugvWAfsgieZRqgk"
Content-Disposition: inline
In-Reply-To: <20170620100348.zh4ygvjjgnhxvmvl@piout.net>
User-Agent: Mutt/1.5.23 (2014-03-12)
Sender: linux-kernel-owner@vger.kernel.org
Content-Length: 1227
Lines: 37


--UugvWAfsgieZRqgk
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
Content-Transfer-Encoding: quoted-printable

On Tue 2017-06-20 12:03:48, Alexandre Belloni wrote:
> On 20/06/2017 at 11:35:08 +0200, Benjamin Gaignard wrote:
> > rtc_time_to_tm() and rtc_tm_to_time() are deprecated because they
> > rely on 32bits variables and that will make rtc break in y2038/2016.
>=20
> Please don't, because this hide the fact that the hardware will not
> handle dates in y2038 anyway and as pointed by Russell a few month ago,
> rtc_time_to_tm will be able to catch it but the 64 bit version will
> silently ignore it.

Reference? Because rtc on PCs stores date in binary coded decimal, so
it is likely to break in 2100, not 2038...
									Pavel
--=20
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blo=
g.html

--UugvWAfsgieZRqgk
Content-Type: application/pgp-signature; name="signature.asc"
Content-Description: Digital signature

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1

iEYEARECAAYFAllJEKMACgkQMOfwapXb+vLe9wCgu9cyUI440c/59xBQrQRexyjC
q9UAnRKqRfLSYD/VIlYozWlk+CWfUWFP
=o49/
-----END PGP SIGNATURE-----

--UugvWAfsgieZRqgk--