diff options
| author | Jean-Baptiste Maneyrol <jean-baptiste.maneyrol@tdk.com> | 2024-04-26 16:58:14 +0300 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2024-05-01 10:26:36 +0300 |
| commit | 0340dc4c82590d8735c58cf904a8aa1173273ab5 (patch) | |
| tree | eb8d16a0da6b56119eab6eed01cd2be044cb520e | |
| parent | 561e2e3e90b4307f9a47a6382fa5cd15462aacf9 (diff) | |
| download | linux-0340dc4c82590d8735c58cf904a8aa1173273ab5.tar.xz | |
iio: invensense: fix interrupt timestamp alignment
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>
| -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 3b0f9598a7c7..4b8ec16240b5 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; |