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

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Message-ID: <20101124182353.GA10589@suse.de>
Date:	Wed, 24 Nov 2010 10:23:53 -0800
From:	Greg KH <gregkh@...e.de>
To:	Scott Wood <scottwood@...escale.com>
Cc:	michael@...erman.id.au, Timur Tabi <timur@...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?

On Wed, Nov 24, 2010 at 12:08:18PM -0600, Scott Wood wrote:
> On Wed, 24 Nov 2010 21:23:47 +1100
> Michael Ellerman <michael@...erman.id.au> wrote:
> 
> > On Thu, 2010-11-18 at 12:13 -0600, Scott Wood wrote:
> > > Unfortunately, it's not an exact match, and the fact that reg doesn't
> > > translate to a physical address means that AFAICT you'll currently get
> > > something like "byte-channel.nnn", where "nnn" is an arbitrary
> > > kernel-assigned number.
> > 
> > Can you not use device_rename() ?
> 
> Ah, didn't know about that.  Still, might be nice to add support for
> "handle" nodes at the infrastructure level rather than in each driver.

No, please never use that function, bad things will happen.

thanks,

greg k-h
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