ping... On 2014/6/19 18:40, One Thousand Gnomes wrote: > On Thu, 19 Jun 2014 08:51:25 +0800 > "Li, Aubrey" <aubrey.li@xxxxxxxxxxxxxxx> wrote: > >> When the wakeup attribute is set, the GPIO button is capable of >> waking up the system from sleep states, including the "freeze" >> sleep state. For that to work, its driver needs to pass the >> IRQF_NO_SUSPEND flag to devm_request_any_context_irq(), or the >> interrupt will be disabled by suspend_device_irqs() and the >> system won't be woken up by it from the "freeze" sleep state. >> >> The suspend_device_irqs() routine is a workaround for drivers >> that mishandle interrupts triggered when the devices handled >> by them are suspended, so it is safe to use IRQF_NO_SUSPEND in >> all drivers that don't have that problem. >> >> The affected/tested machines include Dell Venue 11 Pro and Asus T100TA. >> >> Signed-off-by: Aubrey Li <aubrey.li@xxxxxxxxxxxxxxx> >> Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx> > > Reviewed-by: Alan Cox <alan@xxxxxxxxxxxxxxx> > > > -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
