[PATCH 1/7] iio:adc:ad7766: Use new IRQF_NO_AUTOEN to reduce boilerplate

[Jonathan Cameron <jic23@kernel.org>]

From: Jonathan Cameron <Jonathan.Cameron@huawei.com>

As iio_poll_trigger() is safe against spurious interrupts when the
trigger is not enabled, this is not a fix despite looking like
a race.  It is nice to simplify the code however so the interrupt
is never enabled in the first place.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Lars-Peter Clausen <lars@metafoo.de>
---
 drivers/iio/adc/ad7766.c | 15 +++++++--------
 1 file changed, 7 insertions(+), 8 deletions(-)

diff --git a/drivers/iio/adc/ad7766.c b/drivers/iio/adc/ad7766.c
index 829a3426f235..1e41759f3ee5 100644
--- a/drivers/iio/adc/ad7766.c
+++ b/drivers/iio/adc/ad7766.c
@@ -255,18 +255,17 @@ static int ad7766_probe(struct spi_device *spi)
 		ad7766->trig->ops = &ad7766_trigger_ops;
 		iio_trigger_set_drvdata(ad7766->trig, ad7766);
 
-		ret = devm_request_irq(&spi->dev, spi->irq, ad7766_irq,
-			IRQF_TRIGGER_FALLING, dev_name(&spi->dev),
-			ad7766->trig);
-		if (ret < 0)
-			return ret;
-
 		/*
 		 * The device generates interrupts as long as it is powered up.
 		 * Some platforms might not allow the option to power it down so
-		 * disable the interrupt to avoid extra load on the system
+		 * don't enable the interrupt to avoid extra load on the system
 		 */
-		disable_irq(spi->irq);
+		ret = devm_request_irq(&spi->dev, spi->irq, ad7766_irq,
+				       IRQF_TRIGGER_FALLING | IRQF_NO_AUTOEN,
+				       dev_name(&spi->dev),
+				       ad7766->trig);
+		if (ret < 0)
+			return ret;
 
 		ret = devm_iio_trigger_register(&spi->dev, ad7766->trig);
 		if (ret)
-- 
2.31.1