linux-kernel - Re: [PATCH 6/6] SATA PIIX: Blacklist system that spins off disks during ACPI power off

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Date:	Mon, 19 Jan 2009 23:08:32 +0100
From:	Frans Pop <elendil@...net.nl>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
Cc:	Jeff Garzik <jeff@...zik.org>, tj@...nel.org,
	akpm@...ux-foundation.org, torvalds@...ux-foundation.org,
	linux-ide@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 6/6] SATA PIIX: Blacklist system that spins off disks during ACPI power off

On Monday 19 January 2009, Rafael J. Wysocki wrote:
> From: Rafael J. Wysocki <rjw@...k.pl>
>
> Some notebooks from HP have the problem that their BIOSes attempt to
> spin down hard drives before entering ACPI system states S4 and S5.
> This leads to a yo-yo effect during system power-off shutdown and the
> last phase of hibernation when the disk is first spun down by the
> kernel and then almost immediately turned on and off by the BIOS.
> This, in turn, may result in shortening the disk's life times.
>
> To prevent this from happening we can blacklist the affected systems
> using DMI information.
>
> Blacklist HP 2510p that uses the ata_piix driver.
>
> Signed-off-by: Rafael J. Wysocki <rjw@...k.pl>

As I have a system that is affected by this and as I have been a happy 
user of this patch for 4 months or so, it may make sense to add my

Tested-by: Frans Pop <elendil@...net.nl>

Same goes indirectly for the rest of the series, except for patch 5.
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