diff options
| author | Jacek Anaszewski <j.anaszewski@samsung.com> | 2013-08-16 17:11:00 +0400 |
|---|---|---|
| committer | Jonathan Cameron <jic23@kernel.org> | 2013-08-17 22:34:52 +0400 |
| commit | d536321df392ee0db6a5e92d98f0303020315f40 (patch) | |
| tree | c3616492e72328c7a76ab22445d61f9bb167628c /include/linux/iio/iio.h | |
| parent | 1696f36482e7063051a1dad86a54be83fd847f4f (diff) | |
| download | linux-d536321df392ee0db6a5e92d98f0303020315f40.tar.xz | |
iio: trigger: implement devm_iio_trigger_alloc/devm_iio_triger_free
Add a resource managed devm_iio_trigger_alloc()/devm_iio_triger_free()
to automatically clean up triggers allocated by IIO drivers, thus
leading to simplified IIO drivers code.
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
Signed-off-by: Kyunmin Park <kyungmin.park@samsung.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Diffstat (limited to 'include/linux/iio/iio.h')
| -rw-r--r-- | include/linux/iio/iio.h | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/include/linux/iio/iio.h b/include/linux/iio/iio.h index 09ebe0a4d8e6..2103cc32a5fb 100644 --- a/include/linux/iio/iio.h +++ b/include/linux/iio/iio.h @@ -557,6 +557,35 @@ struct iio_dev *devm_iio_device_alloc(struct device *dev, int sizeof_priv); void devm_iio_device_free(struct device *dev, struct iio_dev *indio_dev); /** + * devm_iio_trigger_alloc - Resource-managed iio_trigger_alloc() + * @dev: Device to allocate iio_trigger for + * @fmt: trigger name format. If it includes format + * specifiers, the additional arguments following + * format are formatted and inserted in the resulting + * string replacing their respective specifiers. + * + * Managed iio_trigger_alloc. iio_trigger allocated with this function is + * automatically freed on driver detach. + * + * If an iio_trigger allocated with this function needs to be freed separately, + * devm_iio_trigger_free() must be used. + * + * RETURNS: + * Pointer to allocated iio_trigger on success, NULL on failure. + */ +struct iio_trigger *devm_iio_trigger_alloc(struct device *dev, + const char *fmt, ...); + +/** + * devm_iio_trigger_free - Resource-managed iio_trigger_free() + * @dev: Device this iio_dev belongs to + * @iio_trig: the iio_trigger associated with the device + * + * Free iio_trigger allocated with devm_iio_trigger_alloc(). + */ +void devm_iio_trigger_free(struct device *dev, struct iio_trigger *iio_trig); + +/** * iio_buffer_enabled() - helper function to test if the buffer is enabled * @indio_dev: IIO device structure for device **/ |