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authorThomas Gleixner <tglx@linutronix.de>2008-09-03 21:37:03 +0000
committerThomas Gleixner <tglx@linutronix.de>2008-09-05 11:11:52 +0200
commit7205656ab48da29a95d7f55e43a81db755d3cb3a (patch)
tree7721904e6912a9dcd09fc4041dfb07807c2ef4b7
parentd4496b39559c6d43f83e4c08b899984f8b8089b5 (diff)
clockevents: enforce reprogram in oneshot setup
In tick_oneshot_setup we program the device to the given next_event, but we do not check the return value. We need to make sure that the device is programmed enforced so the interrupt handler engine starts working. Split out the reprogramming function from tick_program_event() and call it with the device, which was handed in to tick_setup_oneshot(). Set the force argument, so the devices is firing an interrupt. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
-rw-r--r--kernel/time/tick-oneshot.c18
1 files changed, 14 insertions, 4 deletions
diff --git a/kernel/time/tick-oneshot.c b/kernel/time/tick-oneshot.c
index 450c04935b66..06595c64b0c9 100644
--- a/kernel/time/tick-oneshot.c
+++ b/kernel/time/tick-oneshot.c
@@ -23,11 +23,11 @@
#include "tick-internal.h"
/**
- * tick_program_event
+ * tick_program_event internal worker function
*/
-int tick_program_event(ktime_t expires, int force)
+static int __tick_program_event(struct clock_event_device *dev,
+ ktime_t expires, int force)
{
- struct clock_event_device *dev = __get_cpu_var(tick_cpu_device).evtdev;
ktime_t now = ktime_get();
while (1) {
@@ -41,6 +41,16 @@ int tick_program_event(ktime_t expires, int force)
}
/**
+ * tick_program_event
+ */
+int tick_program_event(ktime_t expires, int force)
+{
+ struct clock_event_device *dev = __get_cpu_var(tick_cpu_device).evtdev;
+
+ return __tick_program_event(dev, expires, force);
+}
+
+/**
* tick_resume_onshot - resume oneshot mode
*/
void tick_resume_oneshot(void)
@@ -61,7 +71,7 @@ void tick_setup_oneshot(struct clock_event_device *newdev,
{
newdev->event_handler = handler;
clockevents_set_mode(newdev, CLOCK_EVT_MODE_ONESHOT);
- clockevents_program_event(newdev, next_event, ktime_get());
+ __tick_program_event(newdev, next_event, 1);
}
/**