iio: dac: ad5504: introduce local dev pointer

Replace &spi->dev with a local dev pointer to shorten lines, fix
alignment, and improve overall readability in the probe function.

Signed-off-by: Taha Ed-Dafili <0rayn.dev@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

Author: Taha Ed-Dafili

drivers/iio/dac/ad5504.c

@@ -270,25 +270,26 @@ static const struct iio_chan_spec ad5504_channels[] = {
 
 static int ad5504_probe(struct spi_device *spi)
 {
-	const struct ad5504_platform_data *pdata = dev_get_platdata(&spi->dev);
+	struct device *dev = &spi->dev;
+	const struct ad5504_platform_data *pdata = dev_get_platdata(dev);
 	struct iio_dev *indio_dev;
 	struct ad5504_state *st;
 	int ret;
 
-	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);
 
-	ret = devm_regulator_get_enable_read_voltage(&spi->dev, "vcc");
+	ret = devm_regulator_get_enable_read_voltage(dev, "vcc");
 	if (ret < 0 && ret != -ENODEV)
 		return ret;
 	if (ret == -ENODEV) {
 		if (pdata->vref_mv)
 			st->vref_mv = pdata->vref_mv;
 		else
-			dev_warn(&spi->dev, "reference voltage unspecified\n");
+			dev_warn(dev, "reference voltage unspecified\n");
 	} else {
 		st->vref_mv = ret / 1000;
 	}
@@ -304,17 +305,17 @@ static int ad5504_probe(struct spi_device *spi)
 	indio_dev->modes = INDIO_DIRECT_MODE;
 
 	if (spi->irq) {
-		ret = devm_request_threaded_irq(&spi->dev, spi->irq,
-					   NULL,
-					   &ad5504_event_handler,
-					   IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
-					   spi_get_device_id(st->spi)->name,
-					   indio_dev);
+		ret = devm_request_threaded_irq(dev, spi->irq,
+						NULL,
+						&ad5504_event_handler,
+						IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
+						spi_get_device_id(st->spi)->name,
+						indio_dev);
 		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 ad5504_id[] = {