Re: [GIT PATCH] USB patches for 3.9-rc1
From: Rafael J. Wysocki
Date: Fri Feb 22 2013 - 19:14:16 EST
On Friday, February 22, 2013 05:23:04 PM Dave Jones wrote:
> On Fri, Feb 22, 2013 at 10:51:58PM +0100, Fabio Baltieri wrote:
> > On Fri, Feb 22, 2013 at 03:59:54AM -0500, Dave Jones wrote:
> > > On Thu, Feb 21, 2013 at 10:40:10AM -0800, Greg KH wrote:
> > >
> > > It looks like every port on my laptop is powered down, as I can't
> > > even charge devices with it.
> > I have the same problem (and almost the same laptop, Thinkpad T430
> > here), all external USB ports without power - even the always-on one
> > :-).
> > The bug seems to be ACPI related, I bisected it down to this patch:
> > f95988d ACPI / scan: Treat power resources in a special way
> > In the dmesg I have some error like these:
> > ACPI: Power Resource [PUBS] (on)
> > ...
> > pci 0000:00:14.0: System wakeup disabled by ACPI
> > for the USB controllers in the broken kernel, there are some in your
> > dmesg too. I'll try to come up with a fix for current mainline, but all
> > the acpi stuff is quite obscure to me and the patch does not revert
> > cleanly, maybe Rafael (in CC) has some idea!
> Good find. I see the same thing.
> [ 0.930283] ACPI _OSC control for PCIe not granted, disabling ASPM
> [ 0.933527] pci 0000:00:14.0: System wakeup disabled by ACPI
> [ 0.935982] pci 0000:00:19.0: System wakeup disabled by ACPI
> [ 0.937898] pci 0000:00:1a.0: System wakeup disabled by ACPI
> [ 0.939835] pci 0000:00:1b.0: System wakeup disabled by ACPI
> [ 0.940700] ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.EXP1._PRT]
> [ 0.942195] ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.EXP2._PRT]
> [ 0.943737] ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.EXP3._PRT]
> [ 0.944564] pci 0000:00:1c.2: System wakeup disabled by ACPI
> [ 0.966491] pci 0000:00:1d.0: System wakeup disabled by ACPI
> I must have pulled in the acpi bits the same time as the usb pull,
> because I don't recall seeing this problem before last night.
Can you please check if the problem is still there in the master branch of
the linux-pm.git tree alone?
I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.
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