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authorDaniel Drake <dsd@laptop.org>2012-05-18 22:59:41 +0200
committerRafael J. Wysocki <rjw@sisk.pl>2012-05-29 21:20:23 +0200
commitb2201e5482bc2376ea5c049442850a260142ac40 (patch)
tree3c4d45d1319b601b8d0f9ffdf299e8947a85206f /drivers/rtc
parentc10d7a13846bffa5c77f1122500b687ab902e2d2 (diff)
downloadlinux-b2201e5482bc2376ea5c049442850a260142ac40.tar.bz2
rtc-cmos / PM: report wakeup event on ACPI RTC alarm
When the ACPI-driven RTC alarm wakes the system, report it as a wakeup event. This allows userspace to determine that the reason for system wakeup was RTC alarm. Signed-off-by: Daniel Drake <dsd@laptop.org> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Diffstat (limited to 'drivers/rtc')
-rw-r--r--drivers/rtc/rtc-cmos.c9
1 files changed, 6 insertions, 3 deletions
diff --git a/drivers/rtc/rtc-cmos.c b/drivers/rtc/rtc-cmos.c
index 7d5f56edb8ef..4267789ca995 100644
--- a/drivers/rtc/rtc-cmos.c
+++ b/drivers/rtc/rtc-cmos.c
@@ -910,14 +910,17 @@ static inline int cmos_poweroff(struct device *dev)
static u32 rtc_handler(void *context)
{
+ struct device *dev = context;
+
+ pm_wakeup_event(dev, 0);
acpi_clear_event(ACPI_EVENT_RTC);
acpi_disable_event(ACPI_EVENT_RTC, 0);
return ACPI_INTERRUPT_HANDLED;
}
-static inline void rtc_wake_setup(void)
+static inline void rtc_wake_setup(struct device *dev)
{
- acpi_install_fixed_event_handler(ACPI_EVENT_RTC, rtc_handler, NULL);
+ acpi_install_fixed_event_handler(ACPI_EVENT_RTC, rtc_handler, dev);
/*
* After the RTC handler is installed, the Fixed_RTC event should
* be disabled. Only when the RTC alarm is set will it be enabled.
@@ -950,7 +953,7 @@ cmos_wake_setup(struct device *dev)
if (acpi_disabled)
return;
- rtc_wake_setup();
+ rtc_wake_setup(dev);
acpi_rtc_info.wake_on = rtc_wake_on;
acpi_rtc_info.wake_off = rtc_wake_off;