Re: [RFC][PATCH 2/2] PM: Rework handling of interrupts during suspend-resume

Benjamin Herrenschmidt
2009-02-26T20:59:59Z

On Thu, 2009-02-26 at 12:34 -0800, Arve Hjønnevåg wrote:
> That is enough for drivers that use wakelocks to abort suspend (if I
> fix the wakelock code to not use a platform device as its last abort
> point). It is not enough if you don't have wakelocks, since the
> interrupt can occur after suspend_late has been called and the driver
> has no way to abort suspend.
>
I still don't quite see how you deal with the race anyway. Ie. Even
without Rafael patch, what if the interrupt occurs after your sysdev
suspend ?

In general, unless they are level sensitive, wakeup interrupts tend to
always be somewhat racy.

Cheers,
Ben.