Commit be35d281 authored by Mathieu Othacehe's avatar Mathieu Othacehe Committed by Jonathan Cameron

iio: trigger: Print an error if there is no available irq

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's avatarMathieu Othacehe <>
Signed-off-by: default avatarJonathan Cameron <>
parent cb57f2eb
......@@ -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",
goto out_put_module;
/* Request irq */
ret = request_threaded_irq(pf->irq, pf->h, pf->thread,
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