netdev - Re: Mark IPW2100 as BROKEN: Fatal interrupt. Scheduling firmware restart.

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Message-ID: <20080921205706.GA24545@2ka.mipt.ru>
Date:	Mon, 22 Sep 2008 00:57:06 +0400
From:	Evgeniy Polyakov <johnpol@....mipt.ru>
To:	Arjan van de Ven <arjan@...radead.org>
Cc:	Johannes Berg <johannes@...solutions.net>, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, ipw2100-devel@...ts.sourceforge.net,
	linux-wireless@...r.kernel.org, yi.zhu@...el.com,
	reinette.chatre@...el.com, jgarzik@...ox.com,
	linville@...driver.com, davem@...emloft.net
Subject: Re: Mark IPW2100 as BROKEN: Fatal interrupt. Scheduling firmware restart.

On Sun, Sep 21, 2008 at 01:27:53PM -0700, Arjan van de Ven (arjan@...radead.org) wrote:
> > Well, I actually wanted to have a bug there because of it, but now I
> > think that annoying repeated warning is enough to bring attention to
> > the problem by putting bug information into some magic special place
> > called kerneloops collection.
> 
> are you more interested in bringing attention than finding something
> that makes the driver work ? I sort of am getting that impression and
> I'd be disappointed if that is the case.

I do think that it can not be fixed without serious intervention of the
Intel (hardware) folks, since bug exists more than 4 years in two
firmwares and lots of very different driver versions and was reproduced
even on 2.4 kernel.

I will experiment with reloading issues as Alan suggested and to
add/remove more surgery into initialization process to be allowed to
'workaround' the issue, since it looks noone else will.

But that's definitely not a fix and in my personal workaround's 10
degrees shit'o'meter this lies around 12.

> > Consider for inclusing for the upcoming kernel to get wider
> > notifications. Yes, it is not a bugfix, I know.
> 
> still more complex than needed; a WARN_ON_ONCE() will be enough.

That allows to dump whatever number of warnings you want. The more we
have, the louder will be customers scream.

-- 
	Evgeniy Polyakov
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