Messages in this thread | | | Subject | Re: [PATCH 7/7] PCI PM: Let the core be more careful with respect to drivers using new framework | From | Benjamin Herrenschmidt <> | Date | Wed, 04 Feb 2009 13:05:53 +1100 |
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> For non-bridge devices without drivers the PCI PM core will disable > them and save their state on suspend. During resume, it will put > them into D0, if necessary, restore their state (early) and reenable > them.
This is "without drivers" only or does it include devices that have a driver and no PM ops ?
In the later case, the worry is that the driver will potentially still take shared interrupts after you have disabled the device. I know the normal disable path only disables bus mastering, which is a GOOD thing :-) but the pcibios hook might do more here ...
I would recommend only doing that disabling in the "noirq" phase of suspend to avoid problems here. Do you see any reason that wouldn't work ?
Cheers, Ben.
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