Commit 7a7913f1 authored May 12, 2012 by Lars-Peter Clausen Committed by Greg Kroah-Hartman May 14, 2012

iio: Add dev_to_iio_dev() helper function



This patch adds a helper function for retriving a iio_dev struct from a device
struct. Currently we open-code this in two different ways. One is using
dev_get_drvdata on the device and the other is using container_of. The new
helper function uses the container_of solution as it creates slightly smaller
code and also will eventually free up the drvdata pointer for usage by invidual
drivers.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent 7086e6e5

include/linux/iio/iio.h

+11 −0

Original line number	Diff line number	Diff line
		@@ -427,6 +427,17 @@ static inline void iio_device_put(struct iio_dev *indio_dev)
		put_device(&indio_dev->dev);
		};

		/**
		* dev_to_iio_dev() - Get IIO device struct from a device struct
		* @dev: The device embedded in the IIO device
		*
		* Note: The device must be a IIO device, otherwise the result is undefined.
		*/
		static inline struct iio_dev dev_to_iio_dev(struct device dev)
		{
		return container_of(dev, struct iio_dev, dev);
		}

		/* Can we make this smaller? */
		#define IIO_ALIGN L1_CACHE_BYTES
		/**