Hello, Peter Hurley, on Tue 19 Apr 2016 10:24:59 -0700, wrote: > 1. a tty device (aliased as /dev/console) > 2. struct console. For printk() messages. Ok, so you were talking about the second. > So if you want to hear boot messages, hooking up a line > discipline isn't going to work. See the beginning of the thread: in this thread, we are not talking about line disciplines to get the boot messages. We already have hooks for that, see register_vt_notifier and notify_write to get text on the fly, as well as screen_pos to get already-printed text. In this thread, we are talking about line disciplines to be able to write the text on the serial port. That's the only way I'm aware of for kernel drivers to do that, used e.g. by pcmouse, ppp, etc. We also need to be able to read, to know the progression of the speech synthesis. > A clear statement of what you want to achieve will help me > help you. >From the kernel, open a serial port, and write/read text to/from it, before /dev is mounted. Samuel -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
