The function ad_sd_calibrate() enables the channel to calibrate at function entry but doesn't disable it on exit. This is problematic because if two (or more) channels are calibrated in a row, the second calibration isn't executed as intended as the first (still enabled) channel is recalibrated and after the first irq (i.e. when the calibration of the first channel completed) the calibration is aborted. To fix this, disable the calibrated channel after calibration. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@xxxxxxxxxxxx> --- drivers/iio/adc/ad_sigma_delta.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/iio/adc/ad_sigma_delta.c b/drivers/iio/adc/ad_sigma_delta.c index 10e635fc4fa4..fbe241b90f37 100644 --- a/drivers/iio/adc/ad_sigma_delta.c +++ b/drivers/iio/adc/ad_sigma_delta.c @@ -339,6 +339,7 @@ int ad_sd_calibrate(struct ad_sigma_delta *sigma_delta, out: sigma_delta->keep_cs_asserted = false; ad_sigma_delta_set_mode(sigma_delta, AD_SD_MODE_IDLE); + ad_sigma_delta_disable_one(sigma_delta, channel); sigma_delta->bus_locked = false; spi_bus_unlock(sigma_delta->spi->controller); -- 2.47.1
