Hi, Looks like 8xxx GPIO driver cannot properly handle interrupts when multiple GPIO controllers exist in the system.
On Freescale P1022 there are 3 GPIO controllers. All 3 use the same interrupt line, internal interrupt 31. If all controllers are defined in device tree set_irq_chained_handler() is invoked 3 times with same hardware irq number. The result is interrupt storm, mpc8xxx_gpio_irq_cascade() is invoked indefinitely. What would be the best way to fix the problem ? Thanks. Felix Radensky. _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
