iio: adc: max1027: fix not unregistered iio trigger

The driver forgets to unregister the iio trigger in probe failure and
remove.
Use devm API to fix it.

Signed-off-by: Chuhong Yuan <hslester96@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

diff --git a/drivers/iio/adc/max1027.c b/drivers/iio/adc/max1027.c
index e171db2..02834ca 100644 (file)
--- a/drivers/iio/adc/max1027.c
+++ b/drivers/iio/adc/max1027.c
@@ -478,7 +478,13 @@ static int max1027_probe(struct spi_device *spi)
                st->trig->ops = &max1027_trigger_ops;
                st->trig->dev.parent = &spi->dev;
                iio_trigger_set_drvdata(st->trig, indio_dev);
-               iio_trigger_register(st->trig);
+               ret = devm_iio_trigger_register(&indio_dev->dev,
+                                               st->trig);
+               if (ret < 0) {
+                       dev_err(&indio_dev->dev,
+                               "Failed to register iio trigger\n");
+                       return ret;
+               }
 
                ret = devm_request_threaded_irq(&spi->dev, spi->irq,
                                                iio_trigger_generic_data_rdy_poll,