From: alexandre.belloni@free-electrons.com (Alexandre Belloni)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] rtc: at91rm9200: clear RTC alarm status flag prior to suspending
Date: Mon, 12 Oct 2015 08:53:23 +0200 [thread overview]
Message-ID: <20151012065323.GA3558@piout.net> (raw)
In-Reply-To: <1444612677-26178-1-git-send-email-wenyou.yang@atmel.com>
Hi Wenyou,
On 12/10/2015 at 09:17:57 +0800, Wenyou Yang wrote :
> This patch is to clear the RTC alarm status flag prior to suspending
> to avoid the erroneous wake-up activity.
>
Is this a new issue appearing with the sama5d2 or was it present from
the beginning?
> Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com>
> ---
>
> drivers/rtc/rtc-at91rm9200.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/drivers/rtc/rtc-at91rm9200.c b/drivers/rtc/rtc-at91rm9200.c
> index cb62e21..b60fd47 100644
> --- a/drivers/rtc/rtc-at91rm9200.c
> +++ b/drivers/rtc/rtc-at91rm9200.c
> @@ -495,6 +495,8 @@ static int at91_rtc_suspend(struct device *dev)
> /* this IRQ is shared with DBGU and other hardware which isn't
> * necessarily doing PM like we are...
> */
> + at91_rtc_write(AT91_RTC_SCCR, AT91_RTC_ALARM);
> +
> at91_rtc_imr = at91_rtc_read_imr()
> & (AT91_RTC_ALARM|AT91_RTC_SECEV);
> if (at91_rtc_imr) {
> --
> 1.7.9.5
>
--
Alexandre Belloni, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
next prev parent reply other threads:[~2015-10-12 6:53 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-12 1:17 [PATCH] rtc: at91rm9200: clear RTC alarm status flag prior to suspending Wenyou Yang
2015-10-12 6:53 ` Alexandre Belloni [this message]
2015-10-12 7:48 ` Yang, Wenyou
2015-10-12 7:51 ` Alexandre Belloni
2015-10-12 7:55 ` Yang, Wenyou
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