Index: sys/dev/usb/usb_subr.c
===================================================================
RCS file: /cvsroot/src/sys/dev/usb/usb_subr.c,v
retrieving revision 1.190
diff -u -p -u -r1.190 usb_subr.c
--- sys/dev/usb/usb_subr.c	20 Mar 2013 11:14:51 -0000	1.190
+++ sys/dev/usb/usb_subr.c	20 Mar 2013 12:47:58 -0000
@@ -1063,6 +1063,9 @@ usbd_reattach_device(device_t parent, us
  * Do as Windows does: try to read 64 bytes -- there are devices which
  * recognize the initial descriptor fetch (before the control endpoint's
  * MaxPacketSize is known by the host) by exactly this length.
+ *
+ * If the 64 bytes request fails try for just the 8 that the USB 2.0
+ * specification says should be requested.
  */
 static usbd_status
 usbd_get_initial_ddesc(usbd_device_handle dev, usb_device_descriptor_t *desc)
@@ -1076,10 +1079,18 @@ usbd_get_initial_ddesc(usbd_device_handl
 	USETW2(req.wValue, UDESC_DEVICE, 0);
 	USETW(req.wIndex, 0);
 	USETW(req.wLength, 64);
+	DPRINTF(("%s asking for 64 bytes\n", __func__));
+
 	res = usbd_do_request_flags(dev, &req, buf, USBD_SHORT_XFER_OK,
 		&actlen, USBD_DEFAULT_TIMEOUT);
-	if (res)
-		return res;
+	if (res) {
+		DPRINTF(("%s asking for 8 bytes\n", __func__));
+		USETW(req.wLength, 8);
+		res = usbd_do_request_flags(dev, &req, buf, USBD_SHORT_XFER_OK,
+			&actlen, USBD_DEFAULT_TIMEOUT);
+		if (res)
+			return res;
+	}
 	if (actlen < 8)
 		return USBD_SHORT_XFER;
 	memcpy(desc, buf, 8);