diff options
Diffstat (limited to 'drivers/iio/industrialio-event.c')
| -rw-r--r-- | drivers/iio/industrialio-event.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/iio/industrialio-event.c b/drivers/iio/industrialio-event.c index 0ebfc923a997..90fac8ec63c9 100644 --- a/drivers/iio/industrialio-event.c +++ b/drivers/iio/industrialio-event.c @@ -57,6 +57,11 @@ bool iio_event_enabled(const struct iio_event_interface *ev_int) * * Note: The caller must make sure that this function is not running * concurrently for the same indio_dev more than once. + * + * This function may be safely used as soon as a valid reference to iio_dev has + * been obtained via iio_device_alloc(), but any events that are submitted + * before iio_device_register() has successfully completed will be silently + * discarded. **/ int iio_push_event(struct iio_dev *indio_dev, u64 ev_code, s64 timestamp) { @@ -64,6 +69,9 @@ int iio_push_event(struct iio_dev *indio_dev, u64 ev_code, s64 timestamp) struct iio_event_data ev; int copied; + if (!ev_int) + return 0; + /* Does anyone care? */ if (iio_event_enabled(ev_int)) { |