From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Lars-Peter Clausen To: Greg Kroah-Hartman Cc: Jonathan Cameron , devel@driverdev.osuosl.org, linux-iio@vger.kernel.org, Lars-Peter Clausen Subject: [PATCH 1/2] iio: Add iio_device_get() Date: Mon, 4 Jun 2012 10:50:02 +0200 Message-Id: <1338799803-4347-1-git-send-email-lars@metafoo.de> List-ID: 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 --- 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 3a4f6a3..3238fa3 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 /** -- 1.7.10