Re: __pm_runtime_idle() returns -11!

[Rafael J. Wysocki]

On Wednesday 30 September 2009, Kelly Bowa wrote:
> Hi Rafael,
> 
> I get the following error messages in dmesg:
> 
> [    0.488758] ACPI: Enumerating devices from [\]
> [    0.489673] PM: Adding info for acpi:LNXSYSTM:00
> [    0.489856] acpi LNXSYSTM:00: __pm_runtime_idle()!
> [    0.489862] acpi LNXSYSTM:00: __pm_runtime_idle() returns -11!
> [    0.490952] PM: Adding info for acpi:LNXCPU:00
> [    0.491154] acpi LNXCPU:00: __pm_runtime_idle()!
> [    0.491161] acpi LNXCPU:00: __pm_runtime_idle() returns -11!
> ....
> 
> full dmesg: www.tuxedu.org/kbpm/dmesg2.txt
> 
> __pm_runtime_idle() returns -11 which could be that it is waiting for other 
> suspend running in parallel or that pm_runtime_cancel() fails to suspend the 
> given device ?.. this causes a noticeable delay in boot time. I get this on 
> 2.6.31-mm1 and ill soon test against 2.6.32-rc1..

This is a result of a debug message which is not supposed to be enabled on
production systems.  What debug options are enabled in your kernel config?

Rafael
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