linux-kernel - Re: [patch 19/87] Fix oops on close of hot-unplugged FTDI serial converter

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Message-ID: <20090609094217.2c722ca8@dhcp-100-2-144.bos.redhat.com>
Date:	Tue, 9 Jun 2009 09:42:17 -0400
From:	Chuck Ebbert <cebbert@...hat.com>
To:	David Woodhouse <dwmw2@...radead.org>
Cc:	Greg KH <gregkh@...e.de>, Alan Stern <stern@...land.harvard.edu>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"stable@...nel.org" <stable@...nel.org>,
	Justin Forbes <jmforbes@...uxtx.org>,
	Zwane Mwaikambo <zwane@....linux.org.uk>,
	"Theodore Ts'o" <tytso@....edu>,
	Randy Dunlap <rdunlap@...otime.net>,
	Dave Jones <davej@...hat.com>,
	Chuck Wolber <chuckw@...ntumlinux.com>,
	Chris Wedgwood <reviews@...cw.f00f.org>,
	Michael Krufky <mkrufky@...uxtv.org>,
	Domenico Andreoli <cavokz@...il.com>, Willy Tarreau <w@....eu>,
	Rodrigo Rubira Branco <rbranco@...checkpoint.com>,
	Jake Edge <jake@....net>, Eugene Teo <eteo@...hat.com>,
	"torvalds@...ux-foundation.org" <torvalds@...ux-foundation.org>,
	"akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
	"alan@...rguk.ukuu.org.uk" <alan@...rguk.ukuu.org.uk>
Subject: Re: [patch 19/87] Fix oops on close of hot-unplugged FTDI serial
 converter

On Tue, 09 Jun 2009 12:30:11 +0100
David Woodhouse <dwmw2@...radead.org> wrote:

> On Tue, 2009-06-09 at 02:39 -0700, Greg KH wrote:
> > 2.6.29-stable review patch.  If anyone has any objections, please let
> > us know.
> 
> Many USB-serial drivers have similar problems; Alan Stern posted a
> better fix which splits the shutdown() method into separate disconnect()
> and release().
> 
> Admittedly, he didn't include ftdi in his patch because it already had
> this workaround submitted -- but Alan's approach is better. We should
> probably fix ftdi that way, not with this patch.
> 

But this is for -stable, where proven patches are preferred over
yet-to-be-written ones. That rewrite would have to go upstream first.

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