wl12xx: prevent scheduling while suspending (WoW enabled)
When WoW is enabled, the interface will stay up and the chip will be powered on, so we have to flush/cancel any remaining work, and prevent the irq handler from scheduling a new work until the system is resumed. Add 2 new flags: * WL1271_FLAG_SUSPENDED - the system is (about to be) suspended. * WL1271_FLAG_PENDING_WORK - there is a pending irq work which should be scheduled when the system is being resumed. In order to wake-up the system while getting an irq, we initialize the device as wakeup device, and calling pm_wakeup_event() upon getting the interrupt (while the system is about to be suspended) Signed-off-by: NEliad Peller <eliad@wizery.com> Signed-off-by: NLuciano Coelho <coelho@ti.com>
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