[linux-pm] ehci_hcd related S3 lockup on ASUS laptops, again

Andrey Rahmatullin wrar at wrar.name
Tue Apr 17 19:52:18 UTC 2012


On Tue, Apr 17, 2012 at 03:20:32PM -0400, Alan Stern wrote:
> > Unbound:
> > 
> > pci 0000:00:1d.0: wake-up capability enabled by ACPI
> > pci 0000:00:1d.0: Refused to change power state, currently in D0
> > pci 0000:00:1d.0: cur 5 target 3 error 0
> > pci 0000:00:1a.0: wake-up capability enabled by ACPI
> > pci 0000:00:1a.0: Refused to change power state, currently in D0
> > pci 0000:00:1a.0: cur 5 target 3 error 0
> > 
> > Bound:
> > 
> > ehci_hcd 0000:00:1d.0: wake-up capability enabled by ACPI
> > ehci_hcd 0000:00:1d.0: Refused to change power state, currently in D0
> > ehci_hcd 0000:00:1d.0: cur 5 target 3 error 0
> > ehci_hcd 0000:00:1a.0: wake-up capability enabled by ACPI
> > ehci_hcd 0000:00:1a.0: Refused to change power state, currently in D0
> > ehci_hcd 0000:00:1a.0: cur 5 target 3 error 0
> 
> Very good.  The two behaviors are the same.
> 
> Now if you modify the patch by removing the change to hcd-pci.c, which 
> will leave the EHCI code exactly the same as in the vanilla kernel, and 
> set the pm_test value to "platform", what does the dmesg log show in 
> the two cases?
The same for the unbound state. For the bound state, it still locks up.

-- 
WBR, wRAR
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