From e4e8b7765867e8f4705bcc18b8930edbe0e4ef3c Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen Date: Mon, 4 Jun 2012 10:50:02 +0200 Subject: [PATCH] iio: Add iio_device_get() This patch add the iio_device_get() function, which increases the reference count of a iio device. The matching function to decrease the reference count - iio_device_put() - already exists. Signed-off-by: Lars-Peter Clausen Acked-by: Jonathan Cameron Signed-off-by: Greg Kroah-Hartman --- include/linux/iio/iio.h | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/include/linux/iio/iio.h b/include/linux/iio/iio.h index 3a4f6a3ab80..3238fa3374f 100644 --- a/include/linux/iio/iio.h +++ b/include/linux/iio/iio.h @@ -438,6 +438,17 @@ static inline struct iio_dev *dev_to_iio_dev(struct device *dev) return container_of(dev, struct iio_dev, dev); } +/** + * iio_device_get() - increment reference count for the device + * @indio_dev: IIO device structure + * + * Returns: The passed IIO device + **/ +static inline struct iio_dev *iio_device_get(struct iio_dev *indio_dev) +{ + return indio_dev ? dev_to_iio_dev(get_device(&indio_dev->dev)) : NULL; +} + /* Can we make this smaller? */ #define IIO_ALIGN L1_CACHE_BYTES /**