Re: [Bug 53811] [REGRESSION]: acpiphp broken on Lenovo X220 from 3.6 onwards

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On Monday, February 25, 2013 08:52:42 PM Bjorn Helgaas wrote:
> [+to Huang]
> 
> On Thu, Feb 14, 2013 at 1:41 PM, ALLurGroceries
> <allurgroceries@xxxxxxxxx> wrote:
> > On Thu, 2013-02-14 at 10:40 -0700, Bjorn Helgaas wrote:
> >> [+cc Zheng, Rafael, linux-pci]
> >>
> >> On Wed, Feb 13, 2013 at 11:55 PM,  <bugzilla-daemon@xxxxxxxxxxxxxxxxxxx> wrote:
> >> > https://bugzilla.kernel.org/show_bug.cgi?id=53811
> >> >
> >> >            Summary: acpiphp broken on Lenovo X220 from 3.6 onwards
> >>
> >> Thanks for the report.  Can you please attach complete dmesg logs from
> >> kernels with your patch (showing a working hotplug) and without your
> >> patch (showing the failing hotplug)?
> >
> > OK, they're attached. The hotplug is at the very end of both. Without
> > the patch, when I try to power the card on with
> > echo 1 > /sys/bus/pci/slots/1/power
> >
> > I get:
> > acpiphp_glue: acpiphp_enable_slot: Slot status is not ACPI_STA_ALL
> 
> Does anybody care about this runtime PM support for PCIe ports?

Yes.

> If nobody wants to fix this regression, I'm going to revert 71a83bd727
> "PCI/PM: add runtime PM support to PCIe port" and anything that
> depends on it.

I'll have a look at this tomorrow.

Thanks,
Rafael


-- 
I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.
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