diff options
| -rw-r--r-- | drivers/usb/dwc3/drd.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/drivers/usb/dwc3/drd.c b/drivers/usb/dwc3/drd.c index 3e1c1aacf002..da428cf2eb5b 100644 --- a/drivers/usb/dwc3/drd.c +++ b/drivers/usb/dwc3/drd.c @@ -462,8 +462,18 @@ static struct extcon_dev *dwc3_get_extcon(struct dwc3 *dwc) return edev; } + /* + * Try to get an extcon device from the USB PHY controller's "port" + * node. Check if it has the "port" node first, to avoid printing the + * error message from underlying code, as it's a valid case: extcon + * device (and "port" node) may be missing in case of "usb-role-switch" + * or OTG mode. + */ np_phy = of_parse_phandle(dev->of_node, "phys", 0); - np_conn = of_graph_get_remote_node(np_phy, -1, -1); + if (of_graph_is_present(np_phy)) + np_conn = of_graph_get_remote_node(np_phy, -1, -1); + else + np_conn = NULL; if (np_conn) edev = extcon_find_edev_by_node(np_conn); |