iio: adc: ad7793: add dev variable

Add a local struct device pointer to simplify repeated &spi->dev
dereferences throughout the probe function.

Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

diff --git a/drivers/iio/adc/ad7793.c b/drivers/iio/adc/ad7793.c
index 8ff7b70d6632e971b9aacfc3bde7ec47e89c0ffe..21c667e37b31a6aaeccf29d3d373747ec8fce9f7 100644 (file)
--- a/drivers/iio/adc/ad7793.c
+++ b/drivers/iio/adc/ad7793.c
@@ -774,7 +774,8 @@ static const struct ad7793_chip_info ad7793_chip_info_tbl[] = {
 
 static int ad7793_probe(struct spi_device *spi)
 {
-       const struct ad7793_platform_data *pdata = dev_get_platdata(&spi->dev);
+       struct device *dev = &spi->dev;
+       const struct ad7793_platform_data *pdata = dev_get_platdata(dev);
        struct ad7793_state *st;
        struct iio_dev *indio_dev;
        int ret, vref_mv = 0;
@@ -789,7 +790,7 @@ static int ad7793_probe(struct spi_device *spi)
                return -ENODEV;
        }
 
-       indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st));
+       indio_dev = devm_iio_device_alloc(dev, sizeof(*st));
        if (indio_dev == NULL)
                return -ENOMEM;
 
@@ -798,7 +799,7 @@ static int ad7793_probe(struct spi_device *spi)
        ad_sd_init(&st->sd, indio_dev, spi, &ad7793_sigma_delta_info);
 
        if (pdata->refsel != AD7793_REFSEL_INTERNAL) {
-               ret = devm_regulator_get_enable_read_voltage(&spi->dev, "refin");
+               ret = devm_regulator_get_enable_read_voltage(dev, "refin");
                if (ret < 0)
                        return ret;
 
@@ -816,7 +817,7 @@ static int ad7793_probe(struct spi_device *spi)
        indio_dev->num_channels = st->chip_info->num_channels;
        indio_dev->info = st->chip_info->iio_info;
 
-       ret = devm_ad_sd_setup_buffer_and_trigger(&spi->dev, indio_dev);
+       ret = devm_ad_sd_setup_buffer_and_trigger(dev, indio_dev);
        if (ret)
                return ret;
 
@@ -824,7 +825,7 @@ static int ad7793_probe(struct spi_device *spi)
        if (ret)
                return ret;
 
-       return devm_iio_device_register(&spi->dev, indio_dev);
+       return devm_iio_device_register(dev, indio_dev);
 }
 
 static const struct spi_device_id ad7793_id[] = {