linux-kernel - Re: [PATCH 31/31] CAPI: Officially claim char major 191

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Message-Id: <201001231432.09918.isdn@linux-pingi.de>
Date:	Sat, 23 Jan 2010 14:32:09 +0100
From:	Karsten Keil <isdn@...ux-pingi.de>
To:	Marcel Holtmann <marcel@...tmann.org>
Cc:	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Jan Kiszka <jan.kiszka@....de>,
	David Miller <davem@...emloft.net>,
	linux-kernel@...r.kernel.org, i4ldeveloper@...tserv.isdn4linux.de,
	isdn4linux@...tserv.isdn4linux.de, netdev@...r.kernel.org,
	Alan Cox <alan@...ux.intel.com>
Subject: Re: [PATCH 31/31] CAPI: Officially claim char major 191

On Samstag, 23. Januar 2010 13:48:12 Marcel Holtmann wrote:
> Hi Alan,
> 
> > > I found no trace of this mysterious "pcl181" device, neither in-tree
> > > nor out there in the wild. At the same time, the in-tree CAPI
> > > middleware is using major 191 for many years now and obviously without
> > > any conflict. Let's officially claim this major number.
> >
> > This is not the way it should have been done but whoever needs spanking
> > got away with it years ago. Given that this seems the best way forward.
> >
> > With LANANA hat on
> 
> actually in the days of udev, the capifs is not really needed anymore.
> The right choice would be to remove it. I haven't been enabling it since
> years.
> 
So far I understand, the pppd capiplugin is the only user of it, so it could 
be disabled for most users without any problems, as long they are not using
PPP connections via CAPI.

I never understand capifs very well, I think that it can be dropped because of 
udev, but maybe need some adjustment in user space as well (make sure that
udev did create the node before  open it).

I f I remember correctly, here was some proposal  to replace the /dev/capi/ 
nodes with  devpts, this would remove the complete capi_tty device major
as well.

Karsten
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