staging:iio:ad7606: Let common remove function take a struct device *

Currently the common remove function takes a struct iio_dev *. This
parameter is retrieved by the individual driver remove functions by calling
get_drvdata() on their device. To simplify the code let the common remove
function directly take a struct dev * and do the IIO device in retrieval
the common remove function.

This also aligns the interface with the common probe function.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

drivers/staging/iio/adc/ad7606.h

@@ -81,7 +81,7 @@ struct ad7606_bus_ops {
 int ad7606_probe(struct device *dev, int irq, void __iomem *base_address,
 		 const char *name, unsigned int id,
 		 const struct ad7606_bus_ops *bops);
-int ad7606_remove(struct iio_dev *indio_dev, int irq);
+int ad7606_remove(struct device *dev, int irq);
 int ad7606_reset(struct ad7606_state *st);
 int ad7606_read_samples(struct ad7606_state *st);
 

drivers/staging/iio/adc/ad7606_core.c

@@ -535,8 +535,9 @@ int ad7606_probe(struct device *dev, int irq, void __iomem *base_address,
 }
 EXPORT_SYMBOL_GPL(ad7606_probe);
 
-int ad7606_remove(struct iio_dev *indio_dev, int irq)
+int ad7606_remove(struct device *dev, int irq)
 {
+	struct iio_dev *indio_dev = dev_get_drvdata(dev);
 	struct ad7606_state *st = iio_priv(indio_dev);
 
 	iio_device_unregister(indio_dev);

drivers/staging/iio/adc/ad7606_par.c

@@ -76,11 +76,7 @@ static int ad7606_par_probe(struct platform_device *pdev)
 
 static int ad7606_par_remove(struct platform_device *pdev)
 {
-	struct iio_dev *indio_dev = platform_get_drvdata(pdev);
-
-	ad7606_remove(indio_dev, platform_get_irq(pdev, 0));
-
-	return 0;
+	return ad7606_remove(&pdev->dev, platform_get_irq(pdev, 0));
 }
 
 static const struct platform_device_id ad7606_driver_ids[] = {

drivers/staging/iio/adc/ad7606_spi.c

@@ -51,9 +51,7 @@ static int ad7606_spi_probe(struct spi_device *spi)
 
 static int ad7606_spi_remove(struct spi_device *spi)
 {
-	struct iio_dev *indio_dev = dev_get_drvdata(&spi->dev);
-
-	return ad7606_remove(indio_dev, spi->irq);
+	return ad7606_remove(&spi->dev, spi->irq);
 }
 
 static const struct spi_device_id ad7606_id[] = {