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Date: Thu, 13 Dec 2012 11:53:48 -0800
From: Sarah Sharp <sarah.a.sharp@linux.intel.com>
To: Huang Ying <ying.huang@intel.com>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>,
	Andrew Lutomirski <luto@mit.edu>,
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	=?iso-8859-1?Q?Bj=F8rn?= Mork <bjorn@mork.no>,
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	Bjorn Helgaas <bhelgaas@google.com>, linux-pci@vger.kernel.org
Subject: Re: Unreliable USB3 with NEC uPD720200 and Delock Cardreader
Message-ID: <20121213195348.GA23257@xanatos>
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On Wed, Dec 12, 2012 at 10:32:05AM +0800, Huang Ying wrote:
> Please try the patch attached.  With it, USB host controller can be
> waken up with USB card reader plugging in on my test machine.

This patch works for me.  When I enable runtime PM for both the root port
and the host controller, and I see the xHCI host go into PCI runtime
suspend, but there's no longer a message about the power state changing
to D3cold.  USB device connects while the PCI host is suspended work
now, as well as remote wakeup.

Tested-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>

Please mark this for stable.

Thanks,
Sarah Sharp