Re: PCI power state mapping

[Pierre Ossman <drzeus-list-p3sGCRWkH8CeZLLa646FqQ@public.gmane.org>]

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Pavel Machek wrote:

>Hi!
>
>  
>
>>Anyhow, I did some hacks into pci_device_suspend() getting it to 
>>suspend devices without a driver. Combined with my escalation patch 
>>in pci_set_power_state() all devices on the machine now enters D2 or 
>>D3 depending on device capabilities. My laptop still cannot enter the 
>>suspend state so there is still something missing... Are there any 
>>more areas of power management in linux that aren't quite up to spec.?
>>    
>>
>>You forgot to say if you are trying to suspend to ram or to disk.
>>                                Pavel
>>  
>>
>>   RAM. It was in the beginning of the thread...
>>    
>>
>
>Okay, try suspending to disk, first. It tends to work better. Are your
>"hacks into pci_device_suspend() getting it to suspend devices without
>a driver" available somewhere?
>								Pavel
>
>  
>
Suspend to disk works fine. It's just the ram-bit that won't work. There 
is an earlier thread about this with more details (search for 
"suspend-to-ram hangs on HP NX7010"). I haven't bothered making a patch 
of my changes since they do not add any functionality. If you have a 
look at pci_device_suspend() it's fairly easy to change it. It's a very 
compact and obvious function.

Rgds
Pierre

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