linux-kernel - Re: How do I choose an arbitrary minor number for my tty device?

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Date:	Mon, 29 Nov 2010 16:36:50 -0600
From:	Timur Tabi <timur@...escale.com>
To:	Greg KH <greg@...ah.com>
CC:	Michael Ellerman <michael@...erman.id.au>,
	Greg KH <gregkh@...e.de>, Scott Wood <scottwood@...escale.com>,
	Arnd Bergmann <arnd@...db.de>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Stuart Yoder <stuart.yoder@...escale.com>,
	<devicetree-discuss@...r.kernel.org>
Subject: Re: How do I choose an arbitrary minor number for my tty device?

Greg KH wrote:
> I really don't want to get into it, but the networking code is the only
> thing that allows this due to the userspace "want" to rename devices
> because we can't create symlinks to network devices like we can for all
> other devices (as they use device nodes.)
> 
> When this function is called, userspace had better know exactly what is
> going on as it can get confused due to the lack of uevents happening.

Thanks for the explanation, but I'm just concerned that you'll add a comment
that says, "don't call this function".  A quick grep will show that there are
users of this function, and we'll have this exact conversation all over again.

-- 
Timur Tabi
Linux kernel developer at Freescale

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