On Tue, Jul 3, 2018 at 8:26 PM, Janusz Krzysztofik <jmkrzy...@gmail.com> wrote: > Avoid replication of error code conversion in non-DT GPIO consumers' > code by returning -EPROBE_DEFER from gpiod_find() in case a chip > identified by its label in a registered lookup table is not ready. > > See https://lkml.org/lkml/2018/5/30/176 for example case.
> + /* > + * As the lookup table indicates a chip with > + * p->chip_label should exist, assume it may > + * still appear latar and let the interested latar -> later > + * consumer be probed again or let the Deferred > + * Probe infrastructure handle the error. > + */ > + dev_warn(dev, "cannot find GPIO chip %s, deferring\n", > + p->chip_label); > + return ERR_PTR(-EPROBE_DEFER); > } -- With Best Regards, Andy Shevchenko
