Hello, Alan, Thank you for the explanations and I'm sorry for my terminology misunderstanding, I got the point now, endpoint 0 != endpoint[0]. > My advice is to fix aiptek's probe routine. It should check that > intf->altsetting[0].desc.bNumEndpoints > 0 before trying to accessing > the endpoint array. Thank you, yes, the patch proposed does something quite alike. Best regards, Vladis Dronov | Red Hat, Inc. | Product Security Engineer -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html