On Sun, Jul 24, 2022 at 7:01 PM Matti Lehtimäki <matti.lehtimaki@xxxxxxxxx> wrote: > > dev_err_probe() calls __device_set_deferred_probe_reason() > on -EPROBE_DEFER error. The device pointer to driver core private > structure is not yet initialized at this stage for the iio device causing > a null pointer error. Use parent device instead. the parent device pointer ... > pdata->vdd = devm_regulator_get(parent, "vdd"); > if (IS_ERR(pdata->vdd)) > - return dev_err_probe(&indio_dev->dev, PTR_ERR(pdata->vdd), > + return dev_err_probe(indio_dev->dev.parent, PTR_ERR(pdata->vdd), > "unable to get Vdd supply\n"); Why not use the 'parent' variable? ... > pdata->vdd_io = devm_regulator_get(parent, "vddio"); > if (IS_ERR(pdata->vdd_io)) > - return dev_err_probe(&indio_dev->dev, PTR_ERR(pdata->vdd_io), > + return dev_err_probe(indio_dev->dev.parent, PTR_ERR(pdata->vdd_io), Ditto. > "unable to get Vdd_IO supply\n"); -- With Best Regards, Andy Shevchenko
