ADC using ad7793.ko, such as AD7794, may read incorrect data. Extra interrupt is pending if the data on DOUT contains a falling edge. Therefore, wait_for_completion_timeout returns immediately. This patch fixes the issue by setting IRQ_DISABLE_UNLAZY flag. Signed-off-by: Masahiro Honda <honda@xxxxxxxxxxxxx> --- 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 d8570f620..364051809 100644 --- a/drivers/iio/adc/ad_sigma_delta.c +++ b/drivers/iio/adc/ad_sigma_delta.c @@ -584,6 +584,7 @@ static int devm_ad_sd_probe_trigger(struct device *dev, struct iio_dev *indio_de init_completion(&sigma_delta->completion); sigma_delta->irq_dis = true; + irq_set_status_flags(sigma_delta->spi->irq, IRQ_DISABLE_UNLAZY); ret = devm_request_irq(dev, sigma_delta->spi->irq, ad_sd_data_rdy_trig_poll, sigma_delta->info->irq_flags | IRQF_NO_AUTOEN, -- 2.34.1
