acpi_get_override_irq 2836 arch/x86/kernel/io_apic_32.c int acpi_get_override_irq(int bus_irq, int *trigger, int *polarity) acpi_get_override_irq 2826 arch/x86/kernel/io_apic_64.c int acpi_get_override_irq(int bus_irq, int *trigger, int *polarity) acpi_get_override_irq 133 include/linux/acpi.h #define acpi_get_override_irq(bus, trigger, polarity) (-1)