clockevents: prevent endless loop in tick_handle_periodic()

[karo-tx-linux.git] / kernel / time / tick-broadcast.c

diff --git a/kernel/time/tick-broadcast.c b/kernel/time/tick-broadcast.c
index 2f5a38294bf9ffc8639a5e623760c5242e96629b..cb01cd8f919b2752cfb7d97b4dc9ea4e87834a97 100644 (file)
--- a/kernel/time/tick-broadcast.c
+++ b/kernel/time/tick-broadcast.c
@@ -235,9 +235,9 @@ static void tick_do_broadcast_on_off(void *why)
        case CLOCK_EVT_NOTIFY_BROADCAST_FORCE:
                if (!cpu_isset(cpu, tick_broadcast_mask)) {
                        cpu_set(cpu, tick_broadcast_mask);
-                       if (td->mode == TICKDEV_MODE_PERIODIC)
-                               clockevents_set_mode(dev,
-                                                    CLOCK_EVT_MODE_SHUTDOWN);
+                       if (tick_broadcast_device.mode ==
+                           TICKDEV_MODE_PERIODIC)
+                               clockevents_shutdown(dev);
                }
                if (*reason == CLOCK_EVT_NOTIFY_BROADCAST_FORCE)
                        tick_broadcast_force = 1;
@@ -246,7 +246,8 @@ static void tick_do_broadcast_on_off(void *why)
                if (!tick_broadcast_force &&
                    cpu_isset(cpu, tick_broadcast_mask)) {
                        cpu_clear(cpu, tick_broadcast_mask);
-                       if (td->mode == TICKDEV_MODE_PERIODIC)
+                       if (tick_broadcast_device.mode ==
+                           TICKDEV_MODE_PERIODIC)
                                tick_setup_periodic(dev, 0);
                }
                break;
@@ -254,7 +255,7 @@ static void tick_do_broadcast_on_off(void *why)
 
        if (cpus_empty(tick_broadcast_mask)) {
                if (!bc_stopped)
-                       clockevents_set_mode(bc, CLOCK_EVT_MODE_SHUTDOWN);
+                       clockevents_shutdown(bc);
        } else if (bc_stopped) {
                if (tick_broadcast_device.mode == TICKDEV_MODE_PERIODIC)
                        tick_broadcast_start_periodic(bc);
@@ -306,7 +307,7 @@ void tick_shutdown_broadcast(unsigned int *cpup)
 
        if (tick_broadcast_device.mode == TICKDEV_MODE_PERIODIC) {
                if (bc && cpus_empty(tick_broadcast_mask))
-                       clockevents_set_mode(bc, CLOCK_EVT_MODE_SHUTDOWN);
+                       clockevents_shutdown(bc);
        }
 
        spin_unlock_irqrestore(&tick_broadcast_lock, flags);
@@ -321,7 +322,7 @@ void tick_suspend_broadcast(void)
 
        bc = tick_broadcast_device.evtdev;
        if (bc)
-               clockevents_set_mode(bc, CLOCK_EVT_MODE_SHUTDOWN);
+               clockevents_shutdown(bc);
 
        spin_unlock_irqrestore(&tick_broadcast_lock, flags);
 }
@@ -576,4 +577,12 @@ void tick_shutdown_broadcast_oneshot(unsigned int *cpup)
        spin_unlock_irqrestore(&tick_broadcast_lock, flags);
 }
 
+/*
+ * Check, whether the broadcast device is in one shot mode
+ */
+int tick_broadcast_oneshot_active(void)
+{
+       return tick_broadcast_device.mode == TICKDEV_MODE_ONESHOT;
+}
+
 #endif