Commit-ID: 472647dcd7e351dbeda750e5ab3e8f7b06d1199a
Gitweb: http://git.kernel.org/tip/472647dcd7e351dbeda750e5ab3e8f7b06d1199a
Author: John Stultz <john.stultz@xxxxxxxxxx>
AuthorDate: Fri, 29 Apr 2011 15:03:10 -0700
Committer: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CommitDate: Mon, 2 May 2011 21:36:57 +0200
timers: Fix alarmtimer build issues when CONFIG_RTC_CLASS=n
Ingo pointed out that the alarmtimers won't build if CONFIG_RTC_CLASS=n.
This patch adds proper ifdefs to the alarmtimer code to disable the rtc
usage if it is not built in.
Reported-by: Ingo Molnar <mingo@xxxxxxx>
Signed-off-by: John Stultz <john.stultz@xxxxxxxxxx>
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
---
kernel/time/alarmtimer.c | 20 ++++++++++++++++++--
1 files changed, 18 insertions(+), 2 deletions(-)
diff --git a/kernel/time/alarmtimer.c b/kernel/time/alarmtimer.c
index 491e37b..9265014 100644
--- a/kernel/time/alarmtimer.c
+++ b/kernel/time/alarmtimer.c
@@ -42,9 +42,11 @@ static struct alarm_base {
clockid_t base_clockid;
} alarm_bases[ALARM_NUMTYPE];
+#ifdef CONFIG_RTC_CLASS
/* rtc timer and device for setting alarm wakeups at suspend */
static struct rtc_timer rtctimer;
static struct rtc_device *rtcdev;
+#endif
/* freezer delta & lock used to handle clock_nanosleep triggered wakeups */
static ktime_t freezer_delta;
@@ -148,7 +150,7 @@ static enum hrtimer_restart alarmtimer_fired(struct hrtimer *timer)
}
-
+#ifdef CONFIG_RTC_CLASS
/**
* alarmtimer_suspend - Suspend time callback
* @dev: unused
@@ -206,7 +208,12 @@ static int alarmtimer_suspend(struct device *dev)
return 0;
}
-
+#else
+static int alarmtimer_suspend(struct device *dev)
+{
+ return 0;
+}
+#endif
static void alarmtimer_freezerset(ktime_t absexp, enum alarmtimer_type type)
{
@@ -631,6 +638,7 @@ static int __init alarmtimer_init(void)
}
device_initcall(alarmtimer_init);
+#ifdef CONFIG_RTC_CLASS
/**
* has_wakealarm - check rtc device has wakealarm ability
* @dev: current device
@@ -675,4 +683,12 @@ static int __init alarmtimer_init_late(void)
return 0;
}
+#else
+static int __init alarmtimer_init_late(void)
+{
+ printk(KERN_WARNING "Kernel not built with RTC support, ALARM timers"
+ " will not wake from suspend");
+ return 0;
+}
+#endif
late_initcall(alarmtimer_init_late);
--
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