Hi,Rex chang:
May I understand your meaning like that you don't recommend me to research
how the kernel register ipc interrupt ISR function keystone_ipc_ack_irq?
I just want to learn in the common situation how kernel register the interrupt ISR function.
When I google,someone said that you must use request_irq to register ISR.But When I
read keystone2 kernel source code,I cannot see kernel use request_irq to register ISR
keystone_ipc_ack_irq.So,That's my confused place.