[PATCH v2 12/13] iio:adc:ad799x: Return more meaningful event enabled state

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only report an event as enabled if it actually is enabled

Signed-off-by: Peter Meerwald <pmeerw@xxxxxxxxxx>
---
 drivers/iio/adc/ad799x.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/drivers/iio/adc/ad799x.c b/drivers/iio/adc/ad799x.c
index b9e02be..8b9c939 100644
--- a/drivers/iio/adc/ad799x.c
+++ b/drivers/iio/adc/ad799x.c
@@ -364,7 +364,15 @@ static int ad799x_read_event_config(struct iio_dev *indio_dev,
 				    enum iio_event_type type,
 				    enum iio_event_direction dir)
 {
-	return 1;
+	struct ad799x_state *st = iio_priv(indio_dev);
+
+	if (!(st->config & AD7998_ALERT_EN))
+		return 0;
+
+	if ((st->config >> AD799X_CHANNEL_SHIFT) & BIT(chan->scan_index))
+		return 1;
+
+	return 0;
 }
 
 static unsigned int ad799x_threshold_reg(const struct iio_chan_spec *chan,
-- 
1.9.1

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