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| author | Alexandru Ardelean <aardelean@deviqon.com> | 2021-09-03 10:29:13 +0300 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2021-10-19 10:27:34 +0300 |
| commit | 25c02edfd41f0dd7aad9115149625d7e7f441b7d (patch) | |
| tree | 27cf86d5c7a978631826346fea2fc1595b3ad9b5 /drivers/iio/inkern.c | |
| parent | c5fd034a2ac99117f67f9ab7653912af33f9106e (diff) | |
| download | linux-25c02edfd41f0dd7aad9115149625d7e7f441b7d.tar.xz | |
iio: inkern: introduce devm_iio_map_array_register() short-hand function
This change introduces a device-managed variant to the
iio_map_array_register() function. It's a simple implementation of calling
iio_map_array_register() and registering a callback to
iio_map_array_unregister() with the devm_add_action_or_reset().
The function uses an explicit 'dev' parameter to bind the unwinding to. It
could have been implemented to implicitly use the parent of the IIO device,
however it shouldn't be too expensive to callers to just specify to which
device object to bind this unwind call.
It would make the API a bit more flexible.
Signed-off-by: Alexandru Ardelean <aardelean@deviqon.com>
Link: https://lore.kernel.org/r/20210903072917.45769-2-aardelean@deviqon.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'drivers/iio/inkern.c')
| -rw-r--r-- | drivers/iio/inkern.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/iio/inkern.c b/drivers/iio/inkern.c index 391a3380a1d1..0222885b334c 100644 --- a/drivers/iio/inkern.c +++ b/drivers/iio/inkern.c @@ -85,6 +85,23 @@ int iio_map_array_unregister(struct iio_dev *indio_dev) } EXPORT_SYMBOL_GPL(iio_map_array_unregister); +static void iio_map_array_unregister_cb(void *indio_dev) +{ + iio_map_array_unregister(indio_dev); +} + +int devm_iio_map_array_register(struct device *dev, struct iio_dev *indio_dev, struct iio_map *maps) +{ + int ret; + + ret = iio_map_array_register(indio_dev, maps); + if (ret) + return ret; + + return devm_add_action_or_reset(dev, iio_map_array_unregister_cb, indio_dev); +} +EXPORT_SYMBOL_GPL(devm_iio_map_array_register); + static const struct iio_chan_spec *iio_chan_spec_from_name(const struct iio_dev *indio_dev, const char *name) { |