iio: adc: ad7791: 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/ad7791.c b/drivers/iio/adc/ad7791.c
index 041fc25e3209bdd6908df27f25aa77e78574c992..ab1ab0d88492b34a2b6b5260003fa277e115f448 100644 (file)
--- a/drivers/iio/adc/ad7791.c
+++ b/drivers/iio/adc/ad7791.c
@@ -407,7 +407,8 @@ static void ad7791_reg_disable(void *reg)
 
 static int ad7791_probe(struct spi_device *spi)
 {
-       const struct ad7791_platform_data *pdata = dev_get_platdata(&spi->dev);
+       struct device *dev = &spi->dev;
+       const struct ad7791_platform_data *pdata = dev_get_platdata(dev);
        struct iio_dev *indio_dev;
        struct ad7791_state *st;
        int ret;
@@ -417,13 +418,13 @@ static int ad7791_probe(struct spi_device *spi)
                return -ENXIO;
        }
 
-       indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st));
+       indio_dev = devm_iio_device_alloc(dev, sizeof(*st));
        if (!indio_dev)
                return -ENOMEM;
 
        st = iio_priv(indio_dev);
 
-       st->reg = devm_regulator_get(&spi->dev, "refin");
+       st->reg = devm_regulator_get(dev, "refin");
        if (IS_ERR(st->reg))
                return PTR_ERR(st->reg);
 
@@ -431,7 +432,7 @@ static int ad7791_probe(struct spi_device *spi)
        if (ret)
                return ret;
 
-       ret = devm_add_action_or_reset(&spi->dev, ad7791_reg_disable, st->reg);
+       ret = devm_add_action_or_reset(dev, ad7791_reg_disable, st->reg);
        if (ret)
                return ret;
 
@@ -447,7 +448,7 @@ static int ad7791_probe(struct spi_device *spi)
        else
                indio_dev->info = &ad7791_no_filter_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;
 
@@ -455,7 +456,7 @@ static int ad7791_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 ad7791_spi_ids[] = {