[PATCH] iio: invensense: fix integer overflow while multiplication

From: Karan Sanghavi
Date: Sun Nov 03 2024 - 03:43:42 EST


Typecast a variable to int64_t for 64-bit arithmetic multiplication

Signed-off-by: Karan Sanghavi <karansanghvi98@xxxxxxxxx>
---
drivers/iio/common/inv_sensors/inv_sensors_timestamp.c | 4 ++--
1 file changed, 2 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 f44458c380d9..d1d11d0b2458 100644
--- a/drivers/iio/common/inv_sensors/inv_sensors_timestamp.c
+++ b/drivers/iio/common/inv_sensors/inv_sensors_timestamp.c
@@ -105,8 +105,8 @@ 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;
+ const int64_t period_min = (int64_t)ts->min_period * ts->mult;
+ const int64_t period_max = (int64_t)ts->max_period * ts->mult;
int64_t add_max, sub_max;
int64_t delta, jitter;
int64_t adjust;

---
base-commit: 81983758430957d9a5cb3333fe324fd70cf63e7e
change-id: 20241102-coverity1586045integeroverflow-cbbf357475d9

Best regards,
--
Karan Sanghavi <karansanghvi98@xxxxxxxxx>