linux-kernel - Re: Regression 3.2 -> 3.3-rc1 10 sec hang at boot and resume, COMRESET failed

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Message-ID: <CAN8TOE8cuUU_Gh5gPKNWQGvunMdzDf9nLNq3GqoQuwvdnD1p8g@mail.gmail.com>
Date:	Wed, 15 Feb 2012 15:39:08 -0800
From:	Brian Norris <computersforpeace@...il.com>
To:	Jeff Garzik <jeff@...zik.org>
Cc:	Tejun Heo <tj@...nel.org>, Lin Ming <ming.m.lin@...el.com>,
	Norbert Preining <preining@...ic.at>,
	"Srivatsa S. Bhat" <srivatsa.bhat@...ux.vnet.ibm.com>,
	linux-kernel@...r.kernel.org,
	"stern@...land.harvard.edu >> Alan Stern" <stern@...land.harvard.edu>,
	linux-ide@...r.kernel.org,
	Linux PM mailing list <linux-pm@...r.kernel.org>,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	Jian Peng <jipeng2005@...il.com>,
	Kevin Cernekee <cernekee@...il.com>, valdis.kletnieks@...edu,
	Mark Lord <kernel@...savvy.com>
Subject: Re: Regression 3.2 -> 3.3-rc1 10 sec hang at boot and resume,
 COMRESET failed

On Wed, Feb 15, 2012 at 11:18 AM, Jeff Garzik <jeff@...zik.org> wrote:
> On 02/15/2012 01:31 PM, Tejun Heo wrote:
>> The problem is that there's no way to identify the controller in
>> question, so we can't do this automatically, so might just as well do
>> it in the simplest way for now.  :(
>
>
> See ahci_devtype[] and ahci_port_info[] in ahci_platform.c for how to do
> this.  Brian would not have to tweak the driver out of tree as claimed; we
> put all changes in tree, and the platform calls itself "spec-strict-ahci" or
> whatever string you prefer.

OK, so can it seems I would add a flag in include/linux/libata.h that
can be added to a new entry in ahci_port_info[]? It seems a little
awkward to put in "libata.h", plus I'm not sure if all the flags have
direct meaning to ATA or if they can be AHCI-specific.

Brian
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