[PATCH v3 3/4] iio:max1027: Use iio_trigger_validate_own_device() helper

[Lars-Peter Clausen <lars@metafoo.de>]

Use the new iio_trigger_validate_own_device() to verify that the trigger
can only be attached to the matching IIO device rather than using a custom
variant.

While the implementation of iio_trigger_validate_own_device() and the
custom variant and are not identical their behaviour is.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
---
New in v3
---
 drivers/iio/adc/max1027.c | 13 +------------
 1 file changed, 1 insertion(+), 12 deletions(-)

diff --git a/drivers/iio/adc/max1027.c b/drivers/iio/adc/max1027.c
index 712fbd2..8ea3271 100644
--- a/drivers/iio/adc/max1027.c
+++ b/drivers/iio/adc/max1027.c
@@ -360,17 +360,6 @@ static int max1027_set_trigger_state(struct iio_trigger *trig, bool state)
 	return 0;
 }
 
-static int max1027_validate_device(struct iio_trigger *trig,
-				   struct iio_dev *indio_dev)
-{
-	struct iio_dev *indio = iio_trigger_get_drvdata(trig);
-
-	if (indio != indio_dev)
-		return -EINVAL;
-
-	return 0;
-}
-
 static irqreturn_t max1027_trigger_handler(int irq, void *private)
 {
 	struct iio_poll_func *pf = (struct iio_poll_func *)private;
@@ -391,7 +380,7 @@ static irqreturn_t max1027_trigger_handler(int irq, void *private)
 
 static const struct iio_trigger_ops max1027_trigger_ops = {
 	.owner = THIS_MODULE,
-	.validate_device = &max1027_validate_device,
+	.validate_device = &iio_trigger_validate_own_device,
 	.set_trigger_state = &max1027_set_trigger_state,
 };
 
-- 
2.1.4