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| author | Jean-Baptiste Maneyrol <jean-baptiste.maneyrol@tdk.com> | 2024-04-26 13:58:14 +0000 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2024-04-28 12:53:29 +0100 |
| commit | e1057ced854fde8c11aa0cc297100ede6971711a (patch) | |
| tree | d87ff7678c35fe711b5d59b826887fd12d7db43e | |
| parent | 4108a30f1097eead0f6bd5d885e6bf093b4d460f (diff) | |
| download | iio-e1057ced854fde8c11aa0cc297100ede6971711a.tar.gz | |
iio: invensense: fix interrupt timestamp alignment
Notice: this object is not reachable from any branch.
Restrict interrupt timestamp alignment for not overflowing max/min
period thresholds.
Fixes: 0ecc363ccea7 ("iio: make invensense timestamp module generic")
Cc: stable@vger.kernel.org
Signed-off-by: Jean-Baptiste Maneyrol <jean-baptiste.maneyrol@tdk.com>
Link: https://lore.kernel.org/r/20240426135814.141837-1-inv.git-commit@tdk.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Notice: this object is not reachable from any branch.
| -rw-r--r-- | drivers/iio/common/inv_sensors/inv_sensors_timestamp.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/iio/common/inv_sensors/inv_sensors_timestamp.c b/drivers/iio/common/inv_sensors/inv_sensors_timestamp.c index 3b0f9598a7c773..4b8ec16240b5aa 100644 --- a/drivers/iio/common/inv_sensors/inv_sensors_timestamp.c +++ b/drivers/iio/common/inv_sensors/inv_sensors_timestamp.c @@ -101,6 +101,9 @@ static bool inv_update_chip_period(struct inv_sensors_timestamp *ts, static void inv_align_timestamp_it(struct inv_sensors_timestamp *ts) { + const int64_t period_min = ts->min_period * ts->mult; + const int64_t period_max = ts->max_period * ts->mult; + int64_t add_max, sub_max; int64_t delta, jitter; int64_t adjust; @@ -108,11 +111,13 @@ static void inv_align_timestamp_it(struct inv_sensors_timestamp *ts) delta = ts->it.lo - ts->timestamp; /* adjust timestamp while respecting jitter */ + add_max = period_max - (int64_t)ts->period; + sub_max = period_min - (int64_t)ts->period; jitter = INV_SENSORS_TIMESTAMP_JITTER((int64_t)ts->period, ts->chip.jitter); if (delta > jitter) - adjust = jitter; + adjust = add_max; else if (delta < -jitter) - adjust = -jitter; + adjust = sub_max; else adjust = 0; |