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>
This commit is contained in:
parent
7086e6e5ba
commit
7a7913f11d
|
@ -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
|
||||
/**
|
||||
|
|
Loading…
Reference in New Issue