linux-kernel - Re: new: regression iwl3945/mac80211 endless after suspend associate/deassociate loop

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Message-ID: <20080902205351.GB8230@google.com>
Date:	Tue, 2 Sep 2008 23:53:52 +0300
From:	"Michael S. Tsirkin" <m.s.tsirkin@...il.com>
To:	"John W. Linville" <linville@...driver.com>
Cc:	Dan Williams <dcbw@...hat.com>,
	Johannes Berg <johannes@...solutions.net>,
	Zhu Yi <yi.zhu@...el.com>, "Rafael J. Wysocki" <rjw@...k.pl>,
	LKML <linux-kernel@...r.kernel.org>, reinette.chatre@...el.com,
	linux-wireless@...r.kernel.org,
	Jan-Espen Pettersen <sigsegv@...iotube.org>
Subject: Re: new: regression iwl3945/mac80211 endless after suspend
	associate/deassociate loop

On Tue, Sep 02, 2008 at 11:06:25AM -0400, John W. Linville wrote:
> On Tue, Sep 02, 2008 at 05:58:41PM +0300, Michael S. Tsirkin wrote:
> > On Tue, Sep 02, 2008 at 09:30:01AM -0400, Dan Williams wrote:
> > > On Tue, 2008-09-02 at 16:04 +0300, Michael S. Tsirkin wrote:
> 
> > > > But it happens to work fine without 8ab65b03b7893da4a49009e7e356e36e27b0c407.
> > > 
> > > That's really odd; that patch (the don't-send-empty-extended-rates-IE
> > > patch) shouldn't have anything to do with this behavior, if it did you
> > > wouldn't get associated to the AP in the first place I think.  You're
> > > 100% sure that this patch is causing the problem?
> > 
> > No, not sure. But reverting it seems to have helped.
> > And there does not seem to be anything else relevant between rc4 and
> > rc5.
> 
> So you determined that commit by eye rather than by git bisect?

Yes.

> Any chance I could talk you into confirming that using git bisect?

It's a bit time consuming because the bug triggers often, but not in
100% of suspends. So you need to fiddle with it a bit after each
bisect to figure out whether it's there.

> Thanks,
> 
> John
> -- 
> John W. Linville
> linville@...driver.com
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