My driver is using irq which can wake up the device, enable_irq_wake is enough or i need to first enable_irq and then set enable_irq_wake. Looked into the definition of these functions, not able to understand much.
I tried using both the combination it does not seem to have any effect. I mean just use enable_irq_wake and in other case use enable_irq then enable_irq_wake.
Thank you
If you check here, you'll see that enable_irq_wake invokes set_irq_wake_real that does not enable the irq.
Further more, take for example this driver: they enable/disable_irq the irq at open/close, while they enable/disable_irq_wake at suspend/resume.