From: "Bjørn Mork" <bjorn@mork.no>
To: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Cc: Ulrich Eckhardt <usb@uli-eckhardt.de>,
Andrew Lutomirski <luto@mit.edu>,
"linux-usb\@vger.kernel.org" <linux-usb@vger.kernel.org>,
Alan Stern <stern@rowland.harvard.edu>,
Ming Lei <ming.lei@canonical.com>,
"Rafael J. Wysocki" <rjw@sisk.pl>,
Bjorn Helgaas <bhelgaas@google.com>,
linux-pci@vger.kernel.org, Huang Ying <ying.huang@intel.com>
Subject: Re: Unreliable USB3 with NEC uPD720200 and Delock Cardreader
Date: Mon, 26 Nov 2012 22:48:03 +0100 [thread overview]
Message-ID: <87boekave4.fsf@nemi.mork.no> (raw)
In-Reply-To: <20121126191002.GE6504@xanatos> (Sarah Sharp's message of "Mon, 26 Nov 2012 11:10:02 -0800")
Sarah Sharp <sarah.a.sharp@linux.intel.com> writes:
> It looks like both Ulrich and Andrew have the same issue. I also have a
> Lenovo x220, and I confirmed that when I turn on PCI runtime suspend,
> the NEC host controller does not report port status changes when a new
> USB device is plugged in.
>
> I'm running 3.6.7, and I'm pretty sure that runtime suspend worked for
> the NEC host on some older kernel. I don't think the NEC host went into
> D3cold on that kernel, though. Is there a way to disable D3cold and
> just use D3hot instead?
Yes, you have /sys/bus/pci/devices/.../d3cold_allowed
See Documentation/ABI/testing/sysfs-bus-pci
If this really is a problem with the D3cold support that went into 3.6
then I guess you should include Huang Ying in the discussions as well
(CCed).
Bjørn
next parent reply other threads:[~2012-11-26 21:48 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20121126191002.GE6504@xanatos>
2012-11-26 21:48 ` Bjørn Mork [this message]
2012-11-28 22:54 ` Unreliable USB3 with NEC uPD720200 and Delock Cardreader Sarah Sharp
2012-12-06 0:33 ` Sarah Sharp
2012-12-06 0:43 ` Rafael J. Wysocki
2012-12-07 0:28 ` Sarah Sharp
2012-12-07 21:00 ` Rafael J. Wysocki
2012-12-12 2:32 ` Huang Ying
2012-12-12 2:34 ` Andrew Lutomirski
2012-12-12 3:18 ` huang ying
2012-12-13 19:53 ` Sarah Sharp
2012-12-06 7:17 ` Huang Ying
2012-12-06 12:43 ` Rafael J. Wysocki
[not found] <50841CCC.9030809@uli-eckhardt.de>
2012-10-22 23:40 ` Sarah Sharp
2012-10-23 13:54 ` Bjorn Helgaas
2012-10-23 17:14 ` Ulrich Eckhardt
2012-10-24 20:18 ` Bjorn Helgaas
2012-10-24 21:10 ` Rafael J. Wysocki
2012-10-24 21:13 ` Bjorn Helgaas
2012-10-24 21:31 ` Rafael J. Wysocki
2012-10-25 1:24 ` Ming Lei
2012-10-25 13:33 ` Bjorn Helgaas
2012-10-25 17:43 ` Ulrich Eckhardt
2012-10-25 18:19 ` Alan Stern
2012-10-27 13:02 ` Ulrich Eckhardt
2012-10-25 17:15 ` Ulrich Eckhardt
2012-10-25 20:11 ` Rafael J. Wysocki
2012-10-26 16:41 ` Ulrich Eckhardt
2012-10-25 20:09 ` Rafael J. Wysocki
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