On Thu, 19 Jun 2014 08:51:25 +0800 "Li, Aubrey" <[email protected]> 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 <[email protected]> > Reviewed-by: Rafael J. Wysocki <[email protected]> Reviewed-by: Alan Cox <[email protected]> -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
