To: Dan Williams <dcbw@redhat.com>
cc: Stanislaw Gruszka <sgruszka@redhat.com>,
	linux-wireless@vger.kernel.org, stable@kernel.org,
	"John W. Linville" <linville@tuxdriver.com>,
	Chris Siebenmann <cks-rhbugzilla@cs.toronto.edu>
Subject: Re: [PATCH] airo: fix setting zero length WEP key 
In-reply-to: dcbw's message of Thu, 04 Feb 2010 13:44:55 -0800.
             <1265319895.4290.4.camel@localhost.localdomain>
Date: Thu, 04 Feb 2010 17:10:49 -0500
From: Chris Siebenmann <cks@cs.toronto.edu>
Message-Id: <20100204221049.717A72B0054@apps0.cs.toronto.edu>
Sender: linux-wireless-owner@vger.kernel.org

| >  That mentioned commit broke wireless on a Thinkpad T42 (running Fedora
| > 11); from that commit onwards, the wireless system appeared to see no
| > networks. The patch makes things work again.
| > 
| >  More details are in the Fedora bugzilla:
| > 	https://bugzilla.redhat.com/show_bug.cgi?id=522530
| 
| You mean with iwlist?  That's quite odd because setting WEP keys
| doesn't have anything to do with the scanning stuff, even in the
| firmware.  Note that Airo has always been somewhat tempermental for
| scans and you may or may not see any or all APs in any given scan.

 All I know is that the failure is total; in all situations I've
tried where a good kernel sees one or more networks and APs, a bad
kernel sees none at all (and 'iwlist wifi0 scanning' reports 'No
scan results'). A good kernel sometimes reports different numbers of
networks and sometimes has quality problems, but a bad kernel never sees
anything.

(Well, has never seen anything within a relatively modest amount of
time.  I have not let it sit for, say, an hour in order to see if
something magically gets better; I have always rebooted into a kernel
with working wireless.)

	- cks