* EHCI powersave causes shutdown to freeze
@ 2011-11-23 23:44 Patrik Kullman
2011-11-24 0:15 ` Rafael J. Wysocki
0 siblings, 1 reply; 2+ messages in thread
From: Patrik Kullman @ 2011-11-23 23:44 UTC (permalink / raw)
To: linux-kernel
Hi,
After creating a powersave script based on PowerTOP Tunables, this
particular line prevented the system from being able to shutdown (Asus
Zenbook UX31E, kernels 3.0 - 3.1.2):
### Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced
Host Controller #1
echo auto > /sys/bus/pci/devices/0000:00:1d.0/power/control
Kernel prints the "Power Down." message but machine doesn't power down.
Is this a known bug?
Could this be fixed in the driver instead of:
echo on > /sys/bus/pci/devices/0000:00:1d.0/power/control
on system shutdown?
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: EHCI powersave causes shutdown to freeze
2011-11-23 23:44 EHCI powersave causes shutdown to freeze Patrik Kullman
@ 2011-11-24 0:15 ` Rafael J. Wysocki
0 siblings, 0 replies; 2+ messages in thread
From: Rafael J. Wysocki @ 2011-11-24 0:15 UTC (permalink / raw)
To: Patrik Kullman; +Cc: linux-kernel
On Thursday, November 24, 2011, Patrik Kullman wrote:
> Hi,
>
> After creating a powersave script based on PowerTOP Tunables, this
> particular line prevented the system from being able to shutdown (Asus
> Zenbook UX31E, kernels 3.0 - 3.1.2):
>
> ### Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced
> Host Controller #1
> echo auto > /sys/bus/pci/devices/0000:00:1d.0/power/control
>
>
> Kernel prints the "Power Down." message but machine doesn't power down.
>
> Is this a known bug?
> Could this be fixed in the driver instead of:
>
> echo on > /sys/bus/pci/devices/0000:00:1d.0/power/control
>
> on system shutdown?
This commit should address that issue:
commit af8db1508f2c9f3b6e633e2d2d906c6557c617f9
Author: Peter Chen <peter.chen@freescale.com>
Date: Tue Nov 15 21:52:29 2011 +0100
PM / driver core: disable device's runtime PM during shutdown
Thanks,
Rafael
^ permalink raw reply [flat|nested] 2+ messages in thread
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2011-11-23 23:44 EHCI powersave causes shutdown to freeze Patrik Kullman
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