Commit 8bcf024f authored by Stefan Brüns's avatar Stefan Brüns Committed by Greg Kroah-Hartman
Browse files

iio: adc: ina2xx: Do not udelay for several seconds 



The conversion time can be up to 16 seconds (8 ms per channel, 2 channels,
1024 times averaging).

Signed-off-by: default avatarStefan Brüns <stefan.bruens@rwth-aachen.de>
Signed-off-by: default avatarJonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent c68013f3

drivers/iio/adc/ina2xx-adc.c

+5 −3
Original line number Diff line number Diff line
@@ -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());