diff options
| author | Mark Brown <[email protected]> | 2015-10-12 18:09:27 +0100 |
|---|---|---|
| committer | Mark Brown <[email protected]> | 2015-10-12 18:09:27 +0100 |
| commit | 79828b4fa835f73cdaf4bffa48696abdcbea9d02 (patch) | |
| tree | 5e0fa7156acb75ba603022bc807df8f2fedb97a8 /drivers/iio/common/hid-sensors/hid-sensor-trigger.c | |
| parent | 721b51fcf91898299d96f4b72cb9434cda29dce6 (diff) | |
| parent | 8c1a9d6323abf0fb1e5dad96cf3f1c783505ea5a (diff) | |
Merge remote-tracking branch 'asoc/fix/rt5645' into asoc-fix-rt5645
Diffstat (limited to 'drivers/iio/common/hid-sensors/hid-sensor-trigger.c')
| -rw-r--r-- | drivers/iio/common/hid-sensors/hid-sensor-trigger.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/iio/common/hid-sensors/hid-sensor-trigger.c b/drivers/iio/common/hid-sensors/hid-sensor-trigger.c index 610fc98f88ef..595511022795 100644 --- a/drivers/iio/common/hid-sensors/hid-sensor-trigger.c +++ b/drivers/iio/common/hid-sensors/hid-sensor-trigger.c @@ -36,6 +36,8 @@ static int _hid_sensor_power_state(struct hid_sensor_common *st, bool state) s32 poll_value = 0; if (state) { + if (!atomic_read(&st->user_requested_state)) + return 0; if (sensor_hub_device_open(st->hsdev)) return -EIO; @@ -52,8 +54,12 @@ static int _hid_sensor_power_state(struct hid_sensor_common *st, bool state) poll_value = hid_sensor_read_poll_value(st); } else { - if (!atomic_dec_and_test(&st->data_ready)) + int val; + + val = atomic_dec_if_positive(&st->data_ready); + if (val < 0) return 0; + sensor_hub_device_close(st->hsdev); state_val = hid_sensor_get_usage_index(st->hsdev, st->power_state.report_id, @@ -92,9 +98,11 @@ EXPORT_SYMBOL(hid_sensor_power_state); int hid_sensor_power_state(struct hid_sensor_common *st, bool state) { + #ifdef CONFIG_PM int ret; + atomic_set(&st->user_requested_state, state); if (state) ret = pm_runtime_get_sync(&st->pdev->dev); else { @@ -109,6 +117,7 @@ int hid_sensor_power_state(struct hid_sensor_common *st, bool state) return 0; #else + atomic_set(&st->user_requested_state, state); return _hid_sensor_power_state(st, state); #endif } |