linux-kernel - Re: [PATCH] tty: Add NULL TTY driver

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Message-ID: <e8b1618a-545b-ee35-ec51-f831cbdff7fa@metux.net>
Date:   Fri, 5 Apr 2019 10:39:43 +0200
From:   "Enrico Weigelt, metux IT consult" <lkml@...ux.net>
To:     Vincent Whitchurch <vincent.whitchurch@...s.com>,
        Greg KH <gregkh@...uxfoundation.org>
Cc:     jslaby@...e.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] tty: Add NULL TTY driver

On 03.04.19 16:11, Vincent Whitchurch wrote:

> Especially on embedded systems, it would be convenient to have a simple
> way to disable the console (both for kernel and userspace) on a system
> which normally uses it, to free up the UART for other things.

Just symlinking to /dev/null does not work ?

OTOH, if you're introducing a dummy console, wouldn't a ringbuffer that,
can be read out later, a better option ?


--mtx

-- 
Enrico Weigelt, metux IT consult
Free software and Linux embedded engineering
info@...ux.net -- +49-151-27565287