linux-kernel - Re: [PATCH] usb-serial: fix regression in Visor/Palm OS module for kernels >= 2.6.24

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Date:	Wed, 26 Mar 2008 22:55:13 -0400 (EDT)
From:	Alan Stern <stern@...land.harvard.edu>
To:	Brad Sawatzky <brad+kernel@...tter.net>
cc:	Oliver Neukum <oliver@...kum.org>,
	Greg Kroah-Hartman <gregkh@...e.de>,
	<linux-kernel@...r.kernel.org>, <linux-usb@...r.kernel.org>
Subject: Re: [PATCH] usb-serial: fix regression in Visor/Palm OS module for
 kernels >= 2.6.24

On Wed, 26 Mar 2008, Brad Sawatzky wrote:

> On Wed, 26 Mar 2008, Oliver Neukum wrote:
> 
> > Am Mittwoch, 26. März 2008 03:32:43 schrieb Brad Sawatzky:
> [ . . . ]
> > > I suppose it's possible that the kernel is identifying 3 bulk endpoints
> > > when there should only be 2 and there is some issue with the lower level
> > > endpoint probe?
> > 
> > Send in "lsusb -v". Are you sure all devices have 3 endpoints?
> 
> Seems to:

You did not understand Oliver's question.  Yes, your device has 3
bulk-OUT endpoints (and 2 bulk-IN).  But do you know whether _all_
Visor/Palm OS devices do?  If they don't, your patch will cause the
driver to stop working when someone plugs in a device with only 2
endpoints.

Alan Stern

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