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Date: Tue, 13 Mar 2007 09:39:38 -0400
From: Mark Lord <lkml@rtr.ca>
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To: Oliver Neukum <oneukum@suse.de>
Cc: Jim Radford <radford@blackbean.org>, Greg KH <greg@kroah.com>,
       linux-usb-devel@lists.sourceforge.net, Adrian Bunk <bunk@stusta.de>,
       Andrew Morton <akpm@linux-foundation.org>,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] usb-serial regression fix
References: <45F57F63.7010308@rtr.ca> <45F60482.6010501@rtr.ca> <20070313091408.GA7205@blackbean.org> <200703131114.48068.oneukum@suse.de>
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Oliver Neukum wrote:
>
> If we get to destroy_serial(), how can ports still be open?

(1) open up a ckermit session on /dev/usb_serial_port_0.
(2) suspend the machine (to RAM).
(3) the suspend logic "removes" all USB devices.

Cheers