linux-kernel - Re: [1/2] 2.6.22-rc6: known regressions v2

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Date:	Fri, 29 Jun 2007 13:39:26 -0400
From:	Chuck Ebbert <cebbert@...hat.com>
To:	Alan Cox <alan@...rguk.ukuu.org.uk>
CC:	Michal Piotrowski <michal.k.k.piotrowski@...il.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Rodrigo Luiz <troops.of.doom@...il.com>,
	alsa-devel@...a-project.org, Takashi Iwai <tiwai@...e.de>,
	Jaroslav Kysela <perex@...e.cz>,
	Ben Collins <bcollins@...ntu.com>,
	reiserfs-devel@...r.kernel.org,
	"Vladimir V. Saveliev" <vs@...esys.com>,
	Randy Dunlap <randy.dunlap@...cle.com>,
	linux-ide@...r.kernel.org, David Chinner <dgc@....com>,
	Jeff Garzik <jeff@...zik.org>, Tejun Heo <htejun@...il.com>,
	Rodney Gordon II <meff@...erevision.org>
Subject: Re: [1/2] 2.6.22-rc6: known regressions v2

On 06/29/2007 12:59 PM, Alan Cox wrote:
>> SATA/PATA
>>
>> Subject    : libata IT821X driver still fails! Hard-freezes system
>> References : http://lkml.org/lkml/2007/6/14/82
>> Submitter  : Rodney Gordon II <meff@...erevision.org>
>> Status     : unknown
> 
> Not a regression as it seems this user's box has always been broken. I've
> been running heavy testing with 2.6.22rc6 and IT8212 and its working
> reliably for the "dumb" mode in question.
> 
> The hardware mode needs a fix Tejun has queued somewhere (probably in
> Jeff's vast backlog) and then works too.
> 
> I'm not even sure this report is IT8212 related rather than just an IRQ
> storm

Why does the driver report "irq 0"?

ata7: PATA max UDMA/133 cmd <blah> ctl <blah> bmdma <blah> irq 0  <====

Above that, the ACPI layer says it assigned IRQ 20

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