linux-kernel - Re: [PATCH] serial: DCC(JTAG) serial and console emulation support

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Message-ID: <AANLkTinDvL9vPb6nmve3rO9dMtMAqh=d1oqBVTOHzYWH@mail.gmail.com>
Date:	Thu, 7 Oct 2010 16:47:59 -0400
From:	Mike Frysinger <vapier@...too.org>
To:	Daniel Walker <dwalker@...eaurora.org>
Cc:	linux-kernel@...r.kernel.org,
	"Hyok S. Choi" <hyok.choi@...sung.com>,
	Tony Lindgren <tony@...mide.com>,
	Jeff Ohlstein <johlstei@...cinc.com>,
	Greg Kroah-Hartman <gregkh@...e.de>,
	Ben Dooks <ben-linux@...ff.org>,
	Alan Cox <alan@...ux.intel.com>,
	Kukjin Kim <kgene.kim@...sung.com>,
	Feng Tang <feng.tang@...el.com>,
	Tobias Klauser <tklauser@...tanz.ch>,
	Jason Wessel <jason.wessel@...driver.com>,
	Philippe Langlais <philippe.langlais@...ricsson.com>
Subject: Re: [PATCH] serial: DCC(JTAG) serial and console emulation support

On Thu, Oct 7, 2010 at 16:06, Daniel Walker wrote:
> On Thu, 2010-10-07 at 16:02 -0400, Mike Frysinger wrote:
>> how is that any different from:
>> ln -s ttyJ0 /dev/ttyS0
>
> It has the same major and minors as ttyS* does. So you don't have to run
> anything on the target.

i dont see how those things are related.  the major/minor are
irrelevant, unless you've already hard coded these in some app that
creates device nodes manually (instead of mdev/udev), but even then
that's something that "needs to be run on the target".  and both
already have config support to transparently do something like
"symlink ttyS# to XXX" as XXX is created.
-mike
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