linux-kernel - Re: iwlagn is getting very shaky

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Message-ID: <CANUX_P1RjcRD2tW1A6YYSEV9+aUZyTEro7tZXJWRoxk6gx-2jA@mail.gmail.com>
Date:	Tue, 22 Nov 2011 08:48:19 +0200
From:	Emmanuel Grumbach <egrumbach@...il.com>
To:	Norbert Preining <preining@...ic.at>
Cc:	"Guy, Wey-Yi" <wey-yi.w.guy@...el.com>,
	David Rientjes <rientjes@...gle.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"ipw3945-devel@...ts.sourceforge.net" 
	<ipw3945-devel@...ts.sourceforge.net>,
	"ilw@...ux.intel.com" <ilw@...ux.intel.com>,
	"linux-wireless@...r.kernel.org" <linux-wireless@...r.kernel.org>,
	Pekka Enberg <penberg@...helsinki.fi>
Subject: Re: iwlagn is getting very shaky

On Tue, Nov 22, 2011 at 08:46, Emmanuel Grumbach <egrumbach@...il.com> wrote:
> On Tue, Nov 22, 2011 at 07:13, Norbert Preining <preining@...ic.at> wrote:
>> On Mo, 21 Nov 2011, Emmanuel Grumbach wrote:
>>> > If you think I shouuld turn on power debug again and see hope that
>>> > it happens again, let me know.
>>>
>>> No, I don't think it is needed. Thanks.
>>
>
> Hi Norbert,
>
> Please apply the patch attached. It has been submitted upstream but
> hasn't been merged in the tree you use apparently.
> Then please run with set the TXQUEUES debug flag: 0x8000000.
> This will give us a better understanding regarding what happens with
> the queues and how they are mapped.
> Do you use any SoftAP / P2P feature ? HW queues can be stalled
> sometimes when using such configuration. Can it also be that the AP
> that we can't work with has any kind of power save feature (I know
> that this one is hard to answer though :-)) ?
>
> Thanks !
>

Forgot to reply on the WARN_ON you saw. Yes I know about it. We seem
to have a race between mac80211 and the driver somewhere. I will look
at it when I will have time for that one. Hopefully before Armageddon.
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