diff options
| -rw-r--r-- | drivers/staging/iio/industrialio-trigger.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/drivers/staging/iio/industrialio-trigger.c b/drivers/staging/iio/industrialio-trigger.c index 9412013e745..20dc8e87d1c 100644 --- a/drivers/staging/iio/industrialio-trigger.c +++ b/drivers/staging/iio/industrialio-trigger.c @@ -220,8 +220,16 @@ static int iio_trigger_attach_poll_func(struct iio_trigger *trig, ret = request_threaded_irq(pf->irq, pf->h, pf->thread, pf->type, pf->name, pf); - if (trig->ops && trig->ops->set_trigger_state && notinuse) + if (ret < 0) { + module_put(pf->indio_dev->info->driver_module); + return ret; + } + + if (trig->ops && trig->ops->set_trigger_state && notinuse) { ret = trig->ops->set_trigger_state(trig, true); + if (ret < 0) + module_put(pf->indio_dev->info->driver_module); + } return ret; } @@ -334,6 +342,8 @@ static ssize_t iio_trigger_write_current(struct device *dev, mutex_unlock(&indio_dev->mlock); trig = iio_trigger_find_by_name(buf, len); + if (oldtrig == trig) + return len; if (trig && indio_dev->info->validate_trigger) { ret = indio_dev->info->validate_trigger(indio_dev, trig); |