---

yaml
---
r: 299154
b: refs/heads/master
c: d8aec3d
h: refs/heads/master
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: c7713e736526d8c9f6f87716fb90562a8ffaff2c
+refs/heads/master: d8aec3dbdfd02627e198e7956ab4aaeba2a349fa

trunk/drivers/usb/core/hub.c

@@ -3163,6 +3163,22 @@ hub_port_init (struct usb_hub *hub, struct usb_device *udev, int port1,
 	if (retval)
 		goto fail;
 
+	/*
+	 * Some superspeed devices have finished the link training process
+	 * and attached to a superspeed hub port, but the device descriptor
+	 * got from those devices show they aren't superspeed devices. Warm
+	 * reset the port attached by the devices can fix them.
+	 */
+	if ((udev->speed == USB_SPEED_SUPER) &&
+			(le16_to_cpu(udev->descriptor.bcdUSB) < 0x0300)) {
+		dev_err(&udev->dev, "got a wrong device descriptor, "
+				"warm reset device\n");
+		hub_port_reset(hub, port1, udev,
+				HUB_BH_RESET_TIME, true);
+		retval = -EINVAL;
+		goto fail;
+	}
+
 	if (udev->descriptor.bMaxPacketSize0 == 0xff ||
 			udev->speed == USB_SPEED_SUPER)
 		i = 512;