Il 22/03/23 11:46, Pin-yen Lin ha scritto:
From: Prashant Malani <pmalani@xxxxxxxxxxxx> When using OF graph, the fw_devlink code will create links between the individual port driver (cros-ec-typec here) and the parent device for a Type-C switch (like mode-switch). Since the mode-switch will in turn have the usb-c-connector (i.e the child of the port driver) as a supplier, fw_devlink will not be able to resolve the cyclic dependency correctly. As a result, the mode-switch driver probe() never runs, so mode-switches are never registered. Because of that, the port driver probe constantly fails with -EPROBE_DEFER, because the Type-C connector class requires all switch devices to be registered prior to port registration. To break this deadlock and allow the mode-switch registration to occur, purge all the usb-c-connector nodes' absent suppliers. This eliminates the connector as a supplier for a switch and allows it to be probed. Signed-off-by: Prashant Malani <pmalani@xxxxxxxxxxxx> Signed-off-by: Pin-yen Lin <treapking@xxxxxxxxxxxx> Reviewed-by: Chen-Yu Tsai <wenst@xxxxxxxxxxxx> Tested-by: Chen-Yu Tsai <wenst@xxxxxxxxxxxx> Acked-by: Heikki Krogerus <heikki.krogerus@xxxxxxxxxxxxxxx>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>
