On Fri, 8 Dec 2017 18:41:49 +0100 Stefan Brüns <[email protected]> wrote:
> The conversion time can be up to 16 seconds (8 ms per channel, 2 channels, > 1024 times averaging). > > Signed-off-by: Stefan Brüns <[email protected]> Applied > --- > > drivers/iio/adc/ina2xx-adc.c | 8 +++++--- > 1 file changed, 5 insertions(+), 3 deletions(-) > > diff --git a/drivers/iio/adc/ina2xx-adc.c b/drivers/iio/adc/ina2xx-adc.c > index b027d485398b..2621a34ee5c6 100644 > --- a/drivers/iio/adc/ina2xx-adc.c > +++ b/drivers/iio/adc/ina2xx-adc.c > @@ -764,7 +764,7 @@ static int ina2xx_capture_thread(void *data) > struct iio_dev *indio_dev = data; > struct ina2xx_chip_info *chip = iio_priv(indio_dev); > int sampling_us = SAMPLING_PERIOD(chip); > - int buffer_us; > + int buffer_us, delay_us; > > /* > * Poll a bit faster than the chip internal Fs, in case > @@ -778,8 +778,10 @@ static int ina2xx_capture_thread(void *data) > if (buffer_us < 0) > return buffer_us; > > - if (sampling_us > buffer_us) > - udelay(sampling_us - buffer_us); > + if (sampling_us > buffer_us) { > + delay_us = sampling_us - buffer_us; > + usleep_range(delay_us, (delay_us * 3) >> 1); > + } > > } while (!kthread_should_stop()); >
