From: Huang Ying <ying.huang@intel.com>
To: "Bjørn Mork" <bjorn@mork.no>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>,
Zheng Yan <zheng.z.yan@intel.com>,
Bjorn Helgaas <bhelgaas@google.com>,
linux-pci@vger.kernel.org, linux-usb@vger.kernel.org,
Alan Stern <stern@rowland.harvard.edu>
Subject: Re: bisected regression, v3.5 -> next-20120724: PCI PM causes USB hotplug failure
Date: Wed, 25 Jul 2012 12:34:24 +0800 [thread overview]
Message-ID: <1343190864.10311.26.camel@yhuang-dev> (raw)
In-Reply-To: <87pq7ko532.fsf@nemi.mork.no>
Hi, Bjorn,
On Wed, 2012-07-25 at 06:08 +0200, Bjørn Mork wrote:
> Enabling autosuspend for USB causes hotplug failure in the current
> linux-next. Newly plugged devices are not detected at all until the
> port/controller is manually powered on by writing "on" to power/control.
> Testing is pretty simple:
>
> 1) for f in /sys/bus/usb/devices/*/power/control; do echo auto > $f; done
Have you done:
for f in /sys/bus/pci/devices/*/power/confol; do echo auto > $f; done
?
If not, the pci device will not be suspended at all.
> 2) wait for the controllers to suspend
> 3) plugin a new USB device
After plugin the new USB device, is there anything in dmesg?
>
> I've bisected the regression down to this commit:
>
>
> commit 448bd857d48e69b33ef323739dc6d8ca20d4cda7
> Author: Huang Ying <ying.huang@intel.com>
> Date: Sat Jun 23 10:23:51 2012 +0800
>
> PCI/PM: add PCIe runtime D3cold support
>
>
> Looks like this somehow powers down my USB host controllers in such a
> way that they are unable to detect connections to their ports. The
> system is a pretty standard 4 year old intel based laptop. Full lspci
> listing is attached.
>
> Please let me know if you need further information. And please fix this
> before rc1. It effectively makes USB non-functional if autosuspend is
> enabled.
Can you provide the output of the following command lines?
grep . /sys/bus/pci/devices/*/power/*
grep . /sys/bus/usb/devices/*/power/*
lsusb
After the controllers suspended.
Best Reards,
Huang Ying
next prev parent reply other threads:[~2012-07-25 4:34 UTC|newest]
Thread overview: 89+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <Pine.LNX.4.44L0.1207241312050.1164-100000@iolanthe.rowland.org>
[not found] ` <87r4s0opck.fsf@nemi.mork.no>
2012-07-25 4:08 ` bisected regression, v3.5 -> next-20120724: PCI PM causes USB hotplug failure Bjørn Mork
2012-07-25 4:34 ` Huang Ying [this message]
2012-07-25 9:58 ` Bjørn Mork
2012-07-25 13:30 ` huang ying
2012-07-25 13:58 ` Bjørn Mork
2012-07-25 18:56 ` Rafael J. Wysocki
2012-07-25 20:02 ` Rafael J. Wysocki
2012-07-25 22:36 ` Bjørn Mork
2012-07-26 2:38 ` Huang Ying
2012-07-26 2:38 ` Huang Ying
2012-07-26 8:54 ` Huang Ying
2012-07-26 10:35 ` Bjørn Mork
2012-07-26 11:02 ` Bjørn Mork
2012-07-26 12:04 ` Bjørn Mork
2012-07-26 15:03 ` Alan Stern
2012-07-26 16:24 ` Bjørn Mork
2012-07-27 5:35 ` Huang Ying
2012-07-27 9:11 ` Bjørn Mork
2012-07-30 3:15 ` Huang Ying
2012-07-30 8:08 ` Bjørn Mork
2012-07-30 13:31 ` huang ying
2012-07-30 16:57 ` Bjørn Mork
2012-07-31 0:22 ` Huang Ying
2012-07-30 14:19 ` Alan Stern
2012-07-31 0:24 ` Huang Ying
2012-07-31 3:18 ` Huang Ying
2012-07-31 17:07 ` Alan Stern
2012-07-27 15:03 ` Alan Stern
2012-07-27 19:11 ` Rafael J. Wysocki
2012-07-27 19:39 ` Alan Stern
2012-07-27 19:54 ` Rafael J. Wysocki
2012-07-28 16:12 ` Alan Stern
2012-07-28 20:26 ` Rafael J. Wysocki
2012-07-28 21:12 ` Alan Stern
2012-07-29 13:55 ` Rafael J. Wysocki
2012-07-29 14:55 ` Alan Stern
2012-07-29 19:18 ` Rafael J. Wysocki
2012-07-31 20:31 ` Do we need asynchronous pm_runtime_get()? (was: Re: bisected regression ...) Rafael J. Wysocki
2012-07-31 21:05 ` Alan Stern
2012-07-31 21:34 ` Rafael J. Wysocki
2012-07-31 21:49 ` Rafael J. Wysocki
2012-08-01 14:36 ` Alan Stern
2012-08-01 21:24 ` Rafael J. Wysocki
2012-08-02 20:16 ` Alan Stern
2012-08-02 21:26 ` Rafael J. Wysocki
2012-08-03 2:20 ` Alan Stern
2012-08-03 3:37 ` Ming Lei
2012-08-03 14:28 ` Alan Stern
2012-08-04 19:47 ` Rafael J. Wysocki
2012-08-04 20:25 ` Alan Stern
2012-08-04 20:48 ` Rafael J. Wysocki
2012-08-04 20:48 ` Alan Stern
2012-08-04 21:15 ` Rafael J. Wysocki
2012-08-04 22:13 ` Alan Stern
2012-08-05 15:26 ` Rafael J. Wysocki
2012-08-06 13:30 ` Ming Lei
2012-08-06 14:47 ` Alan Stern
2012-08-07 1:35 ` Ming Lei
2012-08-07 11:23 ` Rafael J. Wysocki
2012-08-07 15:14 ` Ming Lei
2012-08-07 15:42 ` Alan Stern
2012-08-07 16:30 ` Ming Lei
2012-08-07 20:57 ` Rafael J. Wysocki
2012-08-07 20:45 ` Rafael J. Wysocki
2012-08-08 2:02 ` Ming Lei
2012-08-08 18:42 ` Alan Stern
2012-08-08 20:16 ` Rafael J. Wysocki
2012-08-09 5:55 ` Ming Lei
2012-08-09 10:46 ` Rafael J. Wysocki
2012-08-09 10:55 ` Ming Lei
2012-08-09 19:41 ` Rafael J. Wysocki
2012-08-10 3:19 ` Ming Lei
2012-08-10 20:29 ` Rafael J. Wysocki
2012-08-08 22:27 ` Rafael J. Wysocki
2012-08-06 15:48 ` Alan Stern
2012-08-06 20:30 ` Rafael J. Wysocki
2012-08-07 12:28 ` Rafael J. Wysocki
2012-08-07 17:15 ` Alan Stern
2012-08-07 21:31 ` Rafael J. Wysocki
2012-08-03 14:05 ` Alan Stern
2012-08-04 20:08 ` Rafael J. Wysocki
2012-08-04 20:42 ` Alan Stern
2012-08-04 20:59 ` Rafael J. Wysocki
2012-08-04 19:35 ` Rafael J. Wysocki
2012-07-29 20:12 ` bisected regression, v3.5 -> next-20120724: PCI PM causes USB hotplug failure Jassi Brar
2012-07-29 21:44 ` Alan Stern
2012-07-25 19:51 ` [PATCH] PCI / PM: Fix messages printed by acpi_pci_set_power_state() Rafael J. Wysocki
2012-07-25 20:02 ` Alan Stern
2012-07-25 20:48 ` [PATCH][update] " Rafael J. Wysocki
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