diff --git a/drivers/usb/input/acecad.c b/drivers/usb/input/acecad.c
index 18c10e1..d83603b 100644
--- a/drivers/usb/input/acecad.c
+++ b/drivers/usb/input/acecad.c
@@ -141,10 +141,7 @@
 
 	endpoint = &interface->endpoint[0].desc;
 
-	if (!(endpoint->bEndpointAddress & 0x80))
-		return -ENODEV;
-
-	if ((endpoint->bmAttributes & 3) != 3)
+	if (!usb_endpoint_is_int_in(endpoint))
 		return -ENODEV;
 
 	pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);