IRQ_ISA_CASCADE    97 arch/arm/mach-footbridge/include/mach/irqs.h #define irq_canonicalize(_i)	(((_i) == IRQ_ISA_CASCADE) ? IRQ_ISA_2 : _i)
IRQ_ISA_CASCADE   163 arch/arm/mach-footbridge/isa-irq.c 		setup_irq(IRQ_ISA_CASCADE, &irq_cascade);