linux-kernel - Re: [RFC PATCH] mxser: make /dev/ttyMI<n> namespace contiguous

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Message-ID: <20100122114037.06d073bf@linux.intel.com>
Date:	Fri, 22 Jan 2010 11:40:37 +0000
From:	Alan Cox <alan@...ux.intel.com>
To:	Kirill Smelkov <kirr@....spb.ru>
Cc:	linux-kernel@...r.kernel.org, Kirill Smelkov <kirr@....spb.ru>,
	Jiri Slaby <jirislaby@...il.com>,
	Peter Botha <peterb@...dcircle.co.za>,
	Denis Vlasenko <vda@...ort.com.ua>
Subject: Re: [RFC PATCH] mxser: make /dev/ttyMI<n> namespace contiguous

> Maybe let's teach mxser to create continous /dev entries in the first
> place?

The existing mapping is ABI. Users do not expect their devices to
suddenly move around. If the driver hadn't been merged yet I'd not
object to the concept. However it is now years too late.

Remap it in userspace if you want, add udev rules for it if you like,
but the kernel mapping is set in stone.

Alan
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