Subject: [merged] arm-drivers-rtc-rtc-at91rm9200c-disable-interrupts-at-shutdown.patch removed from -mm tree
To: jhovold@xxxxxxxxx,a.zummo@xxxxxxxxxxxx,linux@xxxxxxxxxxxx,nicolas.ferre@xxxxxxxxx,plagnioj@xxxxxxxxxxxx,mm-commits@xxxxxxxxxxxxxxx
From: akpm@xxxxxxxxxxxxxxxxxxxx
Date: Fri, 22 Nov 2013 13:21:55 -0800
The patch titled
Subject: ARM: drivers/rtc/rtc-at91rm9200.c: disable interrupts at shutdown
has been removed from the -mm tree. Its filename was
arm-drivers-rtc-rtc-at91rm9200c-disable-interrupts-at-shutdown.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: Johan Hovold <jhovold@xxxxxxxxx>
Subject: ARM: drivers/rtc/rtc-at91rm9200.c: disable interrupts at shutdown
Make sure RTC-interrupts are disabled at shutdown.
As the RTC is generally powered by backup power (VDDBU), its interrupts
are not disabled on wake-up, user, watchdog or software reset. This could
cause troubles on other systems (e.g. older kernels) if an interrupt
occurs before a handler has been installed at next boot.
Let us be well-behaved and disable them on clean shutdowns at least (as
do the RTT-based rtc-at91sam9 driver).
Signed-off-by: Johan Hovold <jhovold@xxxxxxxxx>
Acked-by: Nicolas Ferre <nicolas.ferre@xxxxxxxxx>
Cc: Jean-Christophe Plagniol-Villard <plagnioj@xxxxxxxxxxxx>
Cc: Andrew Victor <linux@xxxxxxxxxxxx>
Cc: Alessandro Zummo <a.zummo@xxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/rtc/rtc-at91rm9200.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff -puN drivers/rtc/rtc-at91rm9200.c~arm-drivers-rtc-rtc-at91rm9200c-disable-interrupts-at-shutdown drivers/rtc/rtc-at91rm9200.c
--- a/drivers/rtc/rtc-at91rm9200.c~arm-drivers-rtc-rtc-at91rm9200c-disable-interrupts-at-shutdown
+++ a/drivers/rtc/rtc-at91rm9200.c
@@ -428,6 +428,14 @@ static int __exit at91_rtc_remove(struct
return 0;
}
+static void at91_rtc_shutdown(struct platform_device *pdev)
+{
+ /* Disable all interrupts */
+ at91_rtc_write(AT91_RTC_IDR, AT91_RTC_ACKUPD | AT91_RTC_ALARM |
+ AT91_RTC_SECEV | AT91_RTC_TIMEV |
+ AT91_RTC_CALEV);
+}
+
#ifdef CONFIG_PM_SLEEP
/* AT91RM9200 RTC Power management control */
@@ -466,6 +474,7 @@ static SIMPLE_DEV_PM_OPS(at91_rtc_pm_ops
static struct platform_driver at91_rtc_driver = {
.remove = __exit_p(at91_rtc_remove),
+ .shutdown = at91_rtc_shutdown,
.driver = {
.name = "at91_rtc",
.owner = THIS_MODULE,
_
Patches currently in -mm which might be from jhovold@xxxxxxxxx are
origin.patch
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