> I guess you mean that the GPIO callbacks include Runtime PM handling > however for irq_chip Runtime PM may not be hooked up so the GPIO block > is in such case is not powered on / get clock enabled? Yes. There is another drawback when GPIOs are not properly requested. It is still possible to request them from userspace although a kernel driver is using them. I am playing with the idea that the GPIO core auto-requests GPIOs which are not already requested but still set up as interrupts.
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