From: Wenyou Yang <wenyou.yang@atmel.com>
To: Alessandro Zummo <a.zummo@towertech.it>,
Alexandre Belloni <alexandre.belloni@free-electrons.com>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>,
Ludovic Desroches <ludovic.desroches@atmel.com>,
<rtc-linux@googlegroups.com>, <linux-kernel@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
Wenyou Yang <wenyou.yang@atmel.com>
Subject: [PATCH] rtc: at91rm9200: clear RTC alarm status flag prior to suspending
Date: Mon, 12 Oct 2015 09:17:57 +0800 [thread overview]
Message-ID: <1444612677-26178-1-git-send-email-wenyou.yang@atmel.com> (raw)
This patch is to clear the RTC alarm status flag prior to suspending
to avoid the erroneous wake-up activity.
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
next reply other threads:[~2015-10-12 1:21 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-12 1:17 Wenyou Yang [this message]
2015-10-12 6:53 ` Alexandre Belloni
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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