On Thu, 2017-08-31 at 11:33 -0700, Dmitry Torokhov wrote:
> > +
> > + ret = enable_irq_wake(irq);
> > + if (ret)
> > + dev_warn(dev, "Can't enable IRQ as wake source:
> > %d\n", ret);
>
> We do not normally enable wake IRQs in probe, but instead do:
>
> device_init_wakeup(&pdev->dev, true);
>
> in probe() and then check it in suspend/resume:
>
> if (device_may_wakeup(dev)) {
> err = enable_irq_wake(XXX->irq);
> if (!err)
> XXX->irq_wake_enabled = true;
> }
>
> ...
>
> if (XXX->irq_wake_enabled)
No need to duplicate a flag which IRQ core already has.
See, for example, commit
aef3ad103a68 ("serial: core: remove unneeded irq_wake flag")
> disable_irq_wake(XXX->irq);
>
> This allows userspace to inhibit wakeup, if needed.
--
Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Intel Finland Oy
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