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authorJohn Stultz <john.stultz@linaro.org>2012-04-20 12:31:45 -0700
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-04-20 14:56:36 -0700
commit57c498fa5df05e4bd410c101795368439fec7b4e (patch)
treed4630cd56319d4ff21b5086b0661758a740bb8b9
parente2d8ccef0a8e8aedaf401edca6ad54663b0da24b (diff)
alarmtimer: Provide accessor to alarmtimer rtc device
The Android alarm interface provides a settime call that sets both the alarmtimer RTC device and CLOCK_REALTIME to the same value. Since there may be multiple rtc devices, provide a hook to access the one the alarmtimer infrastructure is using. CC: Colin Cross <ccross@android.com> CC: Thomas Gleixner <tglx@linutronix.de> CC: Android Kernel Team <kernel-team@android.com> Signed-off-by: John Stultz <john.stultz@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--include/linux/alarmtimer.h3
-rw-r--r--kernel/time/alarmtimer.c4
2 files changed, 5 insertions, 2 deletions
diff --git a/include/linux/alarmtimer.h b/include/linux/alarmtimer.h
index 975009e1cbe..96c5c249b08 100644
--- a/include/linux/alarmtimer.h
+++ b/include/linux/alarmtimer.h
@@ -76,4 +76,7 @@ static inline int alarmtimer_callback_running(struct alarm *timer)
}
+/* Provide way to access the rtc device being used by alarmtimers */
+struct rtc_device *alarmtimer_get_rtcdev(void);
+
#endif
diff --git a/kernel/time/alarmtimer.c b/kernel/time/alarmtimer.c
index 8a538c55fc7..aa27d391bfc 100644
--- a/kernel/time/alarmtimer.c
+++ b/kernel/time/alarmtimer.c
@@ -59,7 +59,7 @@ static DEFINE_SPINLOCK(rtcdev_lock);
* If one has not already been chosen, it checks to see if a
* functional rtc device is available.
*/
-static struct rtc_device *alarmtimer_get_rtcdev(void)
+struct rtc_device *alarmtimer_get_rtcdev(void)
{
unsigned long flags;
struct rtc_device *ret;
@@ -115,7 +115,7 @@ static void alarmtimer_rtc_interface_remove(void)
class_interface_unregister(&alarmtimer_rtc_interface);
}
#else
-static inline struct rtc_device *alarmtimer_get_rtcdev(void)
+struct rtc_device *alarmtimer_get_rtcdev(void)
{
return NULL;
}