linux-kernel - Re: [ibm-acpi-devel] [PATCH] Remove 9 second reboot delay on Lenovo T400/T500

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Message-ID: <4C400C8E.8060500@gmx.info>
Date:	Fri, 16 Jul 2010 09:38:54 +0200
From:	Jens Rutschmann <Jens.Rutschmann@....info>
To:	Pedro Ribeiro <pedrib@...il.com>
CC:	eusou15@...oo.com, ibm-acpi-devel@...ts.sourceforge.net,
	linux-kernel@...r.kernel.org, toralf.foerster@....de,
	mjg59@...f.ucam.org
Subject: Re: [ibm-acpi-devel] [PATCH] Remove 9 second reboot delay on Lenovo
 T400/T500

Am 14.07.2010 16:33 schrieb Pedro Ribeiro:
> Please consider this patch. Let me know if you would like me to change
> anything or if you don't agree with it. It applies cleanly to 2.6.35-rc5.
>
> The Lenovo T400 and T500 have an annoying 9 second delay when
> rebooting, unless reboot=pci is passed to the kernel command line.
> This delay happens from at least kernel 2.6.20.
>
> Make this change permanent by hardcoding the Tx00 on the
> arch/kernel/reboot.c pci quirks table.

Hi,

I just want to add to this discussion that this problem also occurs on my T61 with only Linux installed on it.
"reboot=pci" also removed the reboot delay here.

If you need some further information or want me to try some patches / old kernels I'd be glad to help.

Regards,
Jens
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