From mboxrd@z Thu Jan  1 00:00:00 1970
From: Andrey Rahmatullin <wrar@wrar.name>
Subject: Re: ehci_hcd related S3 lockup on ASUS laptops, again
Date: Thu, 12 Apr 2012 04:09:44 +0600
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To: Alan Stern <stern@rowland.harvard.edu>
Cc: jrnieder@gmail.com, Greg KH <greg@kroah.com>, linux-pm@lists.linux-foundation.org, USB list <linux-usb@vger.kernel.org>, Steven Rostedt <rostedt@goodmis.org>
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On Wed, Apr 11, 2012 at 05:13:51PM -0400, Alan Stern wrote:
> > I replaced the hcd_pci_suspend_noirq call with retval=3D0 and suspend/r=
esume
> > was successful.
> =20
> This indicates that your computer doesn't like to suspend while the
> EHCI controllers are in D3hot.  I have no idea why not.
>=20
> If you want a really thorough test, try changing=20
> drivers/pci/pci-driver.c:pci_pm_suspend_noirq.  In the "if (!pm)"=20
> clause, add a call to
>=20
> 	pci_prepare_to_sleep(pci_dev);
>=20
> just after the pci_save_state line.  Then try suspending with the=20
> script enabled (ehci-hcd unbound from the controllers).  If this fails=20
> then we'll know it is the source of the trouble.
Looks like it works even with this line added.

--=20
WBR, wRAR

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