+ /*
+ * Some buggy devices can cause an NEC host controller
+ * to transition to the "Error" state after a hot port
+ * reset. This will show up as the port state in
+ * "Inactive", and the port may also report a
+ * disconnect. Forcing a warm port reset seems to make
+ * the device work.
+ *
+ * See https://bugzilla.kernel.org/show_bug.cgi?id=41752
+ */
+ if (hub_port_inactive(hub, portstatus)) {
+ int ret;
+
+ if ((portchange & USB_PORT_STAT_C_CONNECTION))
+ clear_port_feature(hub->hdev, port1,
+ USB_PORT_FEAT_C_CONNECTION);
+ if (portchange & USB_PORT_STAT_C_LINK_STATE)
+ clear_port_feature(hub->hdev, port1,
+ USB_PORT_FEAT_C_PORT_LINK_STATE);
+ if (portchange & USB_PORT_STAT_C_RESET)
+ clear_port_feature(hub->hdev, port1,
+ USB_PORT_FEAT_C_RESET);
+ dev_dbg(hub->intfdev, "hot reset failed, warm reset port %d\n",
+ port1);
+ ret = hub_port_reset(hub, port1,
+ udev, HUB_BH_RESET_TIME,
+ true);
+ if ((portchange & USB_PORT_STAT_C_CONNECTION))
+ clear_port_feature(hub->hdev, port1,
+ USB_PORT_FEAT_C_CONNECTION);
+ return ret;
+ }