| Message ID | 1507703732-29175-5-git-send-email-eugen.hristev@microchip.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
diff --git a/drivers/iio/adc/at91-sama5d2_adc.c b/drivers/iio/adc/at91-sama5d2_adc.c index 7a9305a..7e51ecb 100644 --- a/drivers/iio/adc/at91-sama5d2_adc.c +++ b/drivers/iio/adc/at91-sama5d2_adc.c @@ -773,6 +773,9 @@ static int at91_adc_read_raw(struct iio_dev *indio_dev, at91_adc_writel(st, AT91_SAMA5D2_IDR, BIT(chan->channel)); at91_adc_writel(st, AT91_SAMA5D2_CHDR, BIT(chan->channel)); + /* Needed to ACK the DRDY interruption */ + at91_adc_readl(st, AT91_SAMA5D2_LCDR); + mutex_unlock(&st->lock); iio_device_release_direct_mode(indio_dev);
Need to acknowledge DRDY irq in direct mode/ software triggered mode. Otherwise, on the next conversion, overrun flag will be raised, which is not a correct state. This doesn't affect the functionality, but will generate possible incorrect overrun reports. Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com> --- drivers/iio/adc/at91-sama5d2_adc.c | 3 +++ 1 file changed, 3 insertions(+)