Re: [PATCH 2/5] PM / Wakeirq: Add automated device wake IRQ handling

[Tony Lindgren]

* Rafael J. Wysocki <rjw@xxxxxxxxxxxxx> [150519 07:02]:
> On Tuesday, May 19, 2015 04:04:43 PM Rafael J. Wysocki wrote:
> > On Monday, May 18, 2015 04:44:01 PM Tony Lindgren wrote:
> > > 
> > > For most drivers, we should be able to drop the following
> > > boilerplate code from runtime_suspend and runtime_resume
> > > functions:
> > > 
> > > 	...
> > > 	device_init_wakeup(dev, true);
> > > 	...
> > > 	if (device_may_wakeup(dev)
> > > 		enable_irq_wake(irq);
> > > 	...
> > > 	if (device_may_wakeup(dev)
> > > 		enable_irq_wake(irq);
> > 
> > Closing parens are missin in the above two if () statements.
> > 
> > Also, should the second one be disable_irq_wake(irq)?

Thanks yeah it should disable_irq_wake :) Will fix.

> > > 	...
> > > 	device_init_wakeup(dev, false);
> > > 	...
> > > 
> > > We can replace it with just the following init and exit
> > > time code:
> > > 
> > > 	...
> > > 	device_init_wakeup(dev, true);
> > > 	dev_pm_set_wake_irq(dev, irq);
> > > 	...
> > > 	dev_pm_clear_wake_irq(dev);
> > > 	device_init_wakeup(dev, false);
> > > 	...
> > > 
> > > And for hardware with dedicated wake-up interrupts:
> > > 
> > > 	...
> > > 	device_init_wakeup(dev, true);
> > > 	dev_pm_set_dedicated_wake_irq(dev, irq);
> > > 	...
> > > 	dev_pm_clear_wake_irq(dev);
> > > 	device_init_wakeup(dev, false);
> > > 	...
> > > 
> > > For now, let's only enable it for select PM_WAKEIRQ.
> > 
> > Why?  What would be wrong with doing that unconditionally?

No reason to make it conditional any longer. it's there from
the earlier version that only handled the dedicated wake IRQS.
 
> I mean, what about making it depend on CONFIG_PM directly?

OK let's do that.

Regards,

Tony
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