iio: adc: sun4i-gpadc: use of_device_get_match_data

The usage of of_device_get_match_data reduce the code size a bit.
Furthermore, it prevents an improbable dereference when
of_match_device() return NULL.

Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

diff --git a/drivers/iio/adc/sun4i-gpadc-iio.c b/drivers/iio/adc/sun4i-gpadc-iio.c
index c4e70f1cad79a731741f160ec1c84facb5af257b..04d7147e01103c0b2329c4fef03fa96ca618fed0 100644 (file)
--- a/drivers/iio/adc/sun4i-gpadc-iio.c
+++ b/drivers/iio/adc/sun4i-gpadc-iio.c
@@ -501,17 +501,15 @@ static int sun4i_gpadc_probe_dt(struct platform_device *pdev,
                                struct iio_dev *indio_dev)
 {
        struct sun4i_gpadc_iio *info = iio_priv(indio_dev);
-       const struct of_device_id *of_dev;
        struct resource *mem;
        void __iomem *base;
        int ret;
 
-       of_dev = of_match_device(sun4i_gpadc_of_id, &pdev->dev);
-       if (!of_dev)
+       info->data = of_device_get_match_data(&pdev->dev);
+       if (!info->data)
                return -ENODEV;
 
        info->no_irq = true;
-       info->data = (struct gpadc_data *)of_dev->data;
        indio_dev->num_channels = ARRAY_SIZE(sun8i_a33_gpadc_channels);
        indio_dev->channels = sun8i_a33_gpadc_channels;