MIPS_CPU_NUM_IRQ   36 arch/mips/include/asm/mach-pnx833x/irq.h #define PNX833X_PIC_IRQ_BASE			(MIPS_CPU_IRQ_BASE + MIPS_CPU_NUM_IRQ)
MIPS_CPU_NUM_IRQ   38 arch/mips/include/asm/mach-pnx833x/irq.h #define NR_IRQS							(MIPS_CPU_NUM_IRQ + PNX833X_PIC_NUM_IRQ + PNX833X_GPIO_NUM_IRQ)