I had modified the .config file to load usbcore as loadable module. Now, i'm able to see the debug output from usb core. Thank You. Regards, Madhukar -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html