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iio: core-trigger: make iio_device_register_trigger_consumer() an int return

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Oddly enough the noop function is an int-return. This one seems to be void.
This change converts it to int, because we want to change how groups are
registered. With that change this function could error out with -ENOMEM.

Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Link: https://lore.kernel.org/r/20210215104043.91251-10-alexandru.ardelean@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Alexandru Ardelean 2021-02-15 12:40:28 +02:00 committed by Jonathan Cameron
parent 8ebaa3ff1e
commit e64506bf69
2 changed files with 6 additions and 2 deletions
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4
drivers/iio/iio_core_trigger.h
View File

@ -9,8 +9,10 @@
/**
* iio_device_register_trigger_consumer() - set up an iio_dev to use triggers
* @indio_dev: iio_dev associated with the device that will consume the trigger
*
* Return 0 if successful, negative otherwise
**/
void iio_device_register_trigger_consumer(struct iio_dev *indio_dev);
int iio_device_register_trigger_consumer(struct iio_dev *indio_dev);
/**
* iio_device_unregister_trigger_consumer() - reverse the registration process

4
drivers/iio/industrialio-trigger.c
View File

@ -692,10 +692,12 @@ int iio_trigger_validate_own_device(struct iio_trigger *trig,
}
EXPORT_SYMBOL(iio_trigger_validate_own_device);
void iio_device_register_trigger_consumer(struct iio_dev *indio_dev)
int iio_device_register_trigger_consumer(struct iio_dev *indio_dev)
{
indio_dev->groups[indio_dev->groupcounter++] =
&iio_trigger_consumer_attr_group;
return 0;
}
void iio_device_unregister_trigger_consumer(struct iio_dev *indio_dev)