On Wed, 20 Feb 2019 17:49:10 +0100 Mathieu Othacehe <m.othacehe@xxxxxxxxx> wrote: > If there are more trigger consumers than > CONFIG_IIO_CONSUMERS_PER_TRIGGER, iio_trigger_attach_poll_func will > silently fail. Add an error message to inform the user that > CONFIG_IIO_CONSUMERS_PER_TRIGGER limit might be exceeded. > > Signed-off-by: Mathieu Othacehe <m.othacehe@xxxxxxxxx> Applied to the togreg branch of iio.git and pushed out as testing for the autobuilders to play with it. Thanks, Jonathan > --- > drivers/iio/industrialio-trigger.c | 5 ++++- > 1 file changed, 4 insertions(+), 1 deletion(-) > > diff --git a/drivers/iio/industrialio-trigger.c b/drivers/iio/industrialio-trigger.c > index ce66699c7fcc..e5b538379ed1 100644 > --- a/drivers/iio/industrialio-trigger.c > +++ b/drivers/iio/industrialio-trigger.c > @@ -254,8 +254,11 @@ static int iio_trigger_attach_poll_func(struct iio_trigger *trig, > > /* Get irq number */ > pf->irq = iio_trigger_get_irq(trig); > - if (pf->irq < 0) > + if (pf->irq < 0) { > + pr_err("Could not find an available irq for trigger %s, CONFIG_IIO_CONSUMERS_PER_TRIGGER=%d limit might be exceeded\n", > + trig->name, CONFIG_IIO_CONSUMERS_PER_TRIGGER); > goto out_put_module; > + } > > /* Request irq */ > ret = request_threaded_irq(pf->irq, pf->h, pf->thread,