HI Andy, On Mon, Mar 6, 2023 at 7:52 PM Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx> wrote: > > On Fri, Mar 03, 2023 at 10:33:45PM +0800, Pin-yen Lin wrote: > > The output port endpoints can be connected to USB-C connectors. > > Running drm_of_find_panel_or_bridge() with such endpoints leads to > > a continuous return value of -EPROBE_DEFER, even though there is > > no panel present. > > > > To avoid this, check for the existence of a "mode-switch" property in > > the port endpoint, and skip panel registration completely if so. > > ... > > > + port_node = of_graph_get_port_by_id(np, 1); > > + count = typec_mode_switch_node_count(&port_node->fwnode); > > Do you need to drop reference count here? > (I don't know myself, so, please check this) > > If no, patch LGTM. The helper completes the for-loop of fwnode_for_each_child_node, which drops the reference count whenever the next node is get. So we don't need drop the reference count here. > > > + if (count) > > + return 0; > > -- > With Best Regards, > Andy Shevchenko > > Best regards, Pin-yen
