On Tue, 1 Mar 2011, Pierre Tardy wrote:
> >> + if (pm_runtime_suspended()) {
> >> + host->waking_up = 1;
> >> + /* Note that we disable temporarly the interrupt until we do the
> >> + * resume. If we don't then we'll get constantly interrupted
> >> + * until we actually resume.
> >> + *
> >> + * as the irq is shared, this might not be very friendly to our
> >> + * irq sharers but the pm_runtime workqueue should really be
> >> + * called soon.
> >
> > Instead of disabling the IRQ, would it be possible to tell the device
> > to stop generating an interrupt request?
>
> Well, the device is power gated, so any access to it will cause a bus
> timeout (depending of the platform)
But could you gate the power back on and then turn off the interrupt
request?
It seems like a foolish design to have an interrupt request that can't
be turned off by an interrupt handler.
Alan Stern
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