On Wed, 13 Feb 2019 22:19:16 +0000
Martin Kelly <mkelly@xxxxxxxx> wrote:
> On 2/13/19 5:17 AM, Mathieu Othacehe 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>
> > ---
> > drivers/iio/industrialio-trigger.c | 6 +++++-
> > 1 file changed, 5 insertions(+), 1 deletion(-)
> >
> > diff --git a/drivers/iio/industrialio-trigger.c b/drivers/iio/industrialio-trigger.c
> > index ce66699c7fcc..801986c21467 100644
> > --- a/drivers/iio/industrialio-trigger.c
> > +++ b/drivers/iio/industrialio-trigger.c
> > @@ -254,8 +254,12 @@ 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 limit "
> > + "might be exceeded\n", trig->name);
> > goto out_put_module;
> > + }
> >
> > /* Request irq */
> > ret = request_threaded_irq(pf->irq, pf->h, pf->thread,
> >
>
> This seems useful! I think it would be good to print the value of
> CONFIG_IIO_CONSUMERS_PER_TRIGGER too. Also, it appears this is
> triggering a checkpatch warning:
>
> WARNING: quoted string split across lines
Agreed, with both comments. Sensible change though. I'll admit
I'm a bit embarrassed that I wrote it without that warning in the
first place :(
Thanks,
Jonathan
