Hi, the current error handling in serial_open does not inform the subdrivers if tty_port_block_til_ready fails. This breaks the semantics the subdrivers expect. The calls to open and close must be balanced. Please disregard this patch, it is wrong. Regards Oliver -- 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