diff options
author | Lars-Peter Clausen <lars@metafoo.de> | 2012-06-04 04:50:02 -0400 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-06-05 00:21:29 -0400 |
commit | e4e8b7765867e8f4705bcc18b8930edbe0e4ef3c (patch) | |
tree | d908c7a41b1b0f6917007eb4e4621a041905301a /include/linux/iio/iio.h | |
parent | 44dd5b02530a5aaea16c1a0a9eea377407445b4a (diff) |
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/iio.h')
-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) | |||
438 | return container_of(dev, struct iio_dev, dev); | 438 | return container_of(dev, struct iio_dev, dev); |
439 | } | 439 | } |
440 | 440 | ||
441 | /** | ||
442 | * iio_device_get() - increment reference count for the device | ||
443 | * @indio_dev: IIO device structure | ||
444 | * | ||
445 | * Returns: The passed IIO device | ||
446 | **/ | ||
447 | static inline struct iio_dev *iio_device_get(struct iio_dev *indio_dev) | ||
448 | { | ||
449 | return indio_dev ? dev_to_iio_dev(get_device(&indio_dev->dev)) : NULL; | ||
450 | } | ||
451 | |||
441 | /* Can we make this smaller? */ | 452 | /* Can we make this smaller? */ |
442 | #define IIO_ALIGN L1_CACHE_BYTES | 453 | #define IIO_ALIGN L1_CACHE_BYTES |
443 | /** | 454 | /** |