Hello Krzysztof, On 05/05/2016 08:34 AM, Krzysztof Kozlowski wrote: > Parse usb-pwrseq property from Device Tree to get the phandle to pwrseq > device. The pwrseq device will be used by USB hub to cycle the power > before activating ports. > > Signed-off-by: Krzysztof Kozlowski <k.kozlowski@xxxxxxxxxxx> > --- [snip] > > @@ -532,6 +534,14 @@ int usb_hub_create_port_device(struct usb_hub *hub, int port1) > return retval; > } > > + port_dev->dev.of_node = usb_of_get_child_node(hub->hdev->dev.of_node, port1); > + port_dev->pwrseq = pwrseq_alloc(&port_dev->dev); > + if (IS_ERR(port_dev->pwrseq)) { > + device_unregister(&port_dev->dev); > + /* TODO: what about EPROBE_DEFER? */ I think it's OK since the call chain is: hub_probe() hub_configure() usb_hub_create_port_device() so the hub_probe() will be deferred if the usb-pwrseq was not registered yet. Unless I misunderstood your question :) Anyway, patch looks good to me: Reviewed-by: Javier Martinez Canillas <javier@xxxxxxxxxxxxxxx> Best regards, -- Javier Martinez Canillas Open Source Group Samsung Research America -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html