iio:mma8452: Use new iio_trigger_validate_own_device() helper

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>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

diff --git a/drivers/iio/accel/mma8452.c b/drivers/iio/accel/mma8452.c
index d41e1b5..1c70515 100644 (file)
--- a/drivers/iio/accel/mma8452.c
+++ b/drivers/iio/accel/mma8452.c
@@ -1347,20 +1347,9 @@ static int mma8452_data_rdy_trigger_set_state(struct iio_trigger *trig,
        return mma8452_change_config(data, MMA8452_CTRL_REG4, reg);
 }
 
-static int mma8452_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 const struct iio_trigger_ops mma8452_trigger_ops = {
        .set_trigger_state = mma8452_data_rdy_trigger_set_state,
-       .validate_device = mma8452_validate_device,
+       .validate_device = iio_trigger_validate_own_device,
        .owner = THIS_MODULE,
 };