diff --git a/drivers/usb/core/urb.c b/drivers/usb/core/urb.c
index ae334b0..909625b 100644
--- a/drivers/usb/core/urb.c
+++ b/drivers/usb/core/urb.c
@@ -350,7 +350,7 @@
 			dev->state < USB_STATE_CONFIGURED)
 		return -ENODEV;
 
-	max = le16_to_cpu(ep->desc.wMaxPacketSize);
+	max = usb_endpoint_maxp(&ep->desc);
 	if (max <= 0) {
 		dev_dbg(&dev->dev,
 			"bogus endpoint ep%d%s in %s (bad maxpacket %d)\n",