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| author | Lars-Peter Clausen | 2012-06-04 10:50:02 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman | 2012-06-05 06:21:29 +0200 |
| commit | e4e8b7765867e8f4705bcc18b8930edbe0e4ef3c (patch) | |
| tree | d908c7a41b1b0f6917007eb4e4621a041905301a /include/linux/iio | |
| parent | staging: iio: Remove version.h header file inclusion (diff) | |
| download | kernel-qcow2-linux-e4e8b7765867e8f4705bcc18b8930edbe0e4ef3c.tar.gz kernel-qcow2-linux-e4e8b7765867e8f4705bcc18b8930edbe0e4ef3c.tar.xz kernel-qcow2-linux-e4e8b7765867e8f4705bcc18b8930edbe0e4ef3c.zip | |
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 <lars@metafoo.de>
Acked-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/iio')
| -rw-r--r-- | include/linux/iio/iio.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/include/linux/iio/iio.h b/include/linux/iio/iio.h index 3a4f6a3ab80d..3238fa3374f7 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 /** |