linux-kernel - Re: [PATCH v2 0/3] ahci: fix boot/resume COMRESET failures

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Date:	Mon, 12 Mar 2012 15:12:09 -0700
From:	Tejun Heo <tj@...nel.org>
To:	Brian Norris <computersforpeace@...il.com>
Cc:	Jeff Garzik <jgarzik@...ox.com>, linux-ide@...r.kernel.org,
	Linux Kernel <linux-kernel@...r.kernel.org>,
	Lin Ming <ming.m.lin@...el.com>,
	Norbert Preining <preining@...ic.at>,
	"Srivatsa S . Bhat" <srivatsa.bhat@...ux.vnet.ibm.com>,
	Valdis Kletnieks <valdis.kletnieks@...edu>,
	"Rafael J . Wysocki" <rjw@...k.pl>
Subject: Re: [PATCH v2 0/3] ahci: fix boot/resume COMRESET failures

On Tue, Feb 21, 2012 at 10:38:41AM -0800, Brian Norris wrote:
> This series addresses regression problems with
> 
>     commit 7faa33da9b7add01db9f1ad92c6a5d9145e940a7
>     ahci: start engine only during soft/hard resets
> 
> Because the fix provided by the above commit caused COMRESET failures and
> 10 second boot-time/resume-time hangs for certain DVD drives, we need to
> make the fix conditional to certain devices/platforms. Add a flag for this.
> 
> Brian
> 
> v2: change flag name to AHCI_HFLAG_DELAY_ENGINE, write more detailed
>     comments
> 
> v1: flag named AHCI_HFLAG_STRICT_SPEC
> 
> Brian Norris (3):
>   ahci: add AHCI_HFLAG_DELAY_ENGINE host flag
>   ahci: move AHCI_HFLAGS() macro to ahci.h
>   ahci_platform: add STRICT_AHCI platform type

This looks good to me.  Jeff?

-- 
tejun
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