ICU_IRQ_START
tintirq_nr = hw_irq - ICU_IRQ_START;
#define ICU_IRQ_LAST (ICU_IRQ_START + ICU_IRQ_COUNT - 1)
unsigned int irq_nr = hwirq - ICU_IRQ_START;
u32 irq_nr = hwirq - ICU_IRQ_START;