Re: [PATCH 7/7] PCI PM: Let the core be more careful with respect to drivers using new framework

[Benjamin Herrenschmidt <benh@kernel.crashing.org>]

> 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.