diff mbox series

[v1,1/1] iio: accel: adxl367: fix setting odr for activity time update

Message ID 20250221203352.41941-1-l.rubusch@gmail.com (mailing list archive)
State New
Headers show
Series [v1,1/1] iio: accel: adxl367: fix setting odr for activity time update | expand

Commit Message

Lothar Rubusch Feb. 21, 2025, 8:33 p.m. UTC
Fix setting the odr value to update activity time based on frequency
derrived by recent odr, and not by obsolete odr value.

The [small] bug: When _adxl367_set_odr() is called with a new odr value,
it first writes the new odr value to the hardware register
ADXL367_REG_FILTER_CTL.
Second, it calls _adxl367_set_act_time_ms(), which calls
adxl367_time_ms_to_samples(). Here st->odr still holds the old odr value.
This st->odr member is used to derrive a frequency value, which is
applied to update ADXL367_REG_TIME_ACT. Hence, the idea is to update
activity time, based on possibilities and power consumption by the
current ODR rate.
Finally, when the function calls return, again in _adxl367_set_odr() the
new ODR is assigned to st->odr.

The fix: When setting a new ODR value is set to ADXL367_REG_FILTER_CTL,
also ADXL367_REG_TIME_ACT should probably be updated with a frequency
based on the recent ODR value and not the old one. Changing the location
of the assignment to st->odr fixes this.

Signed-off-by: Lothar Rubusch <l.rubusch@gmail.com>
---
 drivers/iio/accel/adxl367.c | 10 +++-------
 1 file changed, 3 insertions(+), 7 deletions(-)
diff mbox series

Patch

diff --git a/drivers/iio/accel/adxl367.c b/drivers/iio/accel/adxl367.c
index add4053e7a02..0c04b2bb7efb 100644
--- a/drivers/iio/accel/adxl367.c
+++ b/drivers/iio/accel/adxl367.c
@@ -601,18 +601,14 @@  static int _adxl367_set_odr(struct adxl367_state *st, enum adxl367_odr odr)
 	if (ret)
 		return ret;
 
+	st->odr = odr;
+
 	/* Activity timers depend on ODR */
 	ret = _adxl367_set_act_time_ms(st, st->act_time_ms);
 	if (ret)
 		return ret;
 
-	ret = _adxl367_set_inact_time_ms(st, st->inact_time_ms);
-	if (ret)
-		return ret;
-
-	st->odr = odr;
-
-	return 0;
+	return _adxl367_set_inact_time_ms(st, st->inact_time_ms);
 }
 
 static int adxl367_set_odr(struct iio_dev *indio_dev, enum adxl367_odr odr)