linux-kernel - Re: Regression 2.6.28-git: suspend/resume failure. git bisected to usb suspend/resume patch

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Date:	Mon, 12 Jan 2009 01:03:52 +0100
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Christian Borntraeger <borntraeger@...ibm.com>
Cc:	Alan Stern <stern@...land.harvard.edu>,
	lkml <linux-kernel@...r.kernel.org>,
	"Greg Kroah-Hartman" <gregkh@...e.de>, linux-usb@...r.kernel.org
Subject: Re: Regression 2.6.28-git: suspend/resume failure. git bisected to usb suspend/resume patch

On Sunday 11 January 2009, Christian Borntraeger wrote:
> Hello Alan,
> 
> git bisect found this patch 
> 
> a0d4922da2e4ccb0973095d8d29f36f6b1b5f703 is first bad commit
> commit a0d4922da2e4ccb0973095d8d29f36f6b1b5f703
> Author: Alan Stern <stern@...land.harvard.edu>
> Date:   Wed Dec 17 15:06:03 2008 -0500
> 
>     USB: fix up suspend and resume for PCI host controllers
> 
>     This patch (as1192) rearranges the USB PCI host controller suspend and
>     resume and resume routines:
> 
> 
> To cause my suspend to ram problem with my Thinkpad T61p.
> I can confirm that 
> a81a81a25d3ecdab777abca87c5ddf484056103d works
> and a0d4922da2e4ccb0973095d8d29f36f6b1b5f703  does not work.
> 
> Thing is, 29-rc1 with a0d4922da2e4ccb0973095d8d29f36f6b1b5f703  reverted also 
> fails with suspend/resume. Seems that there was another problem introduced 
> after that patch.

Please try if suspend-resume works for you if you make commit
fa58d305d9925b01830e535896a7227a868a9e15
(PCI PM: Add suspend counterpart of pci_reenable_device) the head of your
tree ('git checkout -b test-branch fa58d305d9925b01830e535896a7227a868a9e15').

If it does, please check the same for commit
571ff7584bb9e05fca0eb79752ae55a46faf3a98
(PCI PM: Power-manage devices without drivers during suspend-resume).

Thanks,
Rafael
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