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-rw-r--r--arch/arm/kernel/perf_event.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/arch/arm/kernel/perf_event.c b/arch/arm/kernel/perf_event.c
index 262ea67f60ae..31326996dfeb 100644
--- a/arch/arm/kernel/perf_event.c
+++ b/arch/arm/kernel/perf_event.c
@@ -583,7 +583,7 @@ static int armpmu_event_init(struct perf_event *event)
583static void armpmu_enable(struct pmu *pmu) 583static void armpmu_enable(struct pmu *pmu)
584{ 584{
585 /* Enable all of the perf events on hardware. */ 585 /* Enable all of the perf events on hardware. */
586 int idx; 586 int idx, enabled = 0;
587 struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events); 587 struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events);
588 588
589 if (!armpmu) 589 if (!armpmu)
@@ -596,9 +596,11 @@ static void armpmu_enable(struct pmu *pmu)
596 continue; 596 continue;
597 597
598 armpmu->enable(&event->hw, idx); 598 armpmu->enable(&event->hw, idx);
599 enabled = 1;
599 } 600 }
600 601
601 armpmu->start(); 602 if (enabled)
603 armpmu->start();
602} 604}
603 605
604static void armpmu_disable(struct pmu *pmu) 606static void armpmu_disable(struct pmu *pmu)