Hi, greg Do you know what source code that implement the line setting function in the kernel source tree? Or what source code do you think is worth a check? sincerely loki 2013/11/4 Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx>: > I still think this is a line setting issue for your userspace program... -- 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