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Date: Tue, 19 Apr 2016 00:28:03 +0200
From: Alexandre Belloni <alexandre.belloni@free-electrons.com>
To: Nicolas Boullis <nboullis@debian.org>
Cc: Alessandro Zummo <a.zummo@towertech.it>, rtc-linux@googlegroups.com
Subject: [rtc-linux] Re: [PATCH] rtc: ds1307: ensure that any pending alarm is
 cleared before a new alarm is enabled
Message-ID: <20160418222803.GA25196@piout.net>
References: <20160402221047.GB3600@haddock.home>
 <20160410112305.GB3603@haddock.home>
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On 10/04/2016 at 13:23:05 +0200, Nicolas Boullis wrote :
> If a previously-set alarm was disabled and then triggered, it may still=
=20
> be pending when a new alarm is configured.
>=20
> Then, if the alarm is enabled before the pending alarm is cleared, then=
=20
> an interrupt is immediately raised.
>=20
> Unfortunately, when the alarm is cleared and enabled during the same I=E6=
=B6=8E=20
> block write, the chip (at least the DS1339 I have) considers that the=20
> alarm is enabled before it is cleared, and raises an interrupt.
>=20
> This patch ensures that the pending alarm is cleared before the alarm is=
=20
> enabled.
>=20
> Signed-off-by: Nicolas Boullis <nboullis@debian.org>
>=20
Applied, thanks.

--=20
Alexandre Belloni, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com

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