linux-kernel - Re: [ath5k-devel] ath5k_pci: gain calibration timeout / unable to reset hardware -11

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Message-ID: <40f31dec0812221438k43f69c6dw3f011a58128edf23@mail.gmail.com>
Date:	Tue, 23 Dec 2008 00:38:58 +0200
From:	"Nick Kossifidis" <mickflemm@...il.com>
To:	"Bob Copeland" <bcopeland@...il.com>
Cc:	"Jiri Slaby" <jirislaby@...il.com>,
	"Soeren Sonnenburg" <kernel@....de>, ath5k-devel@...ts.ath5k.org,
	linux-wireless@...r.kernel.org, linville@...driver.com,
	linux-kernel@...r.kernel.org,
	"Andrew Morton" <akpm@...ux-foundation.org>
Subject: Re: [ath5k-devel] ath5k_pci: gain calibration timeout / unable to reset hardware -11

2008/12/22 Bob Copeland <bcopeland@...il.com>:
> On Mon, Dec 22, 2008 at 4:39 PM, Jiri Slaby <jirislaby@...il.com> wrote:
>>>
>>> Does the _HW lockup_ happen even with 2.6.28? The lockup should be gone there
>>> (with the messages still present).
>>
>> I see Bob already replied, ignore me, he knows better.
>
> I thought Felix's patch had gone into .28, but in fact it hasn't.
> We should probably get it in or queue it for .28.1 -- it's a two
> liner that will fix a lot of people's setups.
>
> John, if you're reading, that's 23c401574b16cb2b6d2231ba405ebf85b8c87de5
> in wireless-testing.
>
> The lockup can still occur, but it's a lot less frequent with his patch.
>

Felix's patch is for Noise Floor calibration timeout which is
non-fatal, here we have a problem with gain offset calibration. If
gain offset calibration fails, we can't have i/q correction and we
can't tune to that channel propertly.

This is a known problem also reported on binary HAL ;-)
http://madwifi-project.org/ticket/1869

we miss something in rf/phy initialization i guess...

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-- 
GPG ID: 0xD21DB2DB
As you read this post global entropy rises. Have Fun ;-)
Nick
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