diff options
Diffstat (limited to 'drivers/perf/arm_dmc620_pmu.c')
| -rw-r--r-- | drivers/perf/arm_dmc620_pmu.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/drivers/perf/arm_dmc620_pmu.c b/drivers/perf/arm_dmc620_pmu.c index 8a81be2dd..88c17c1d6 100644 --- a/drivers/perf/arm_dmc620_pmu.c +++ b/drivers/perf/arm_dmc620_pmu.c @@ -542,12 +542,16 @@ static int dmc620_pmu_event_init(struct perf_event *event) if (event->cpu < 0) return -EINVAL; + hwc->idx = -1; + + if (event->group_leader == event) + return 0; + /* * We can't atomically disable all HW counters so only one event allowed, * although software events are acceptable. */ - if (event->group_leader != event && - !is_software_event(event->group_leader)) + if (!is_software_event(event->group_leader)) return -EINVAL; for_each_sibling_event(sibling, event->group_leader) { @@ -556,7 +560,6 @@ static int dmc620_pmu_event_init(struct perf_event *event) return -EINVAL; } - hwc->idx = -1; return 0; } |