marvel_irq_noop 155 arch/alpha/kernel/sys_marvel.c .irq_mask = marvel_irq_noop, marvel_irq_noop 156 arch/alpha/kernel/sys_marvel.c .irq_unmask = marvel_irq_noop, marvel_irq_noop 170 arch/alpha/kernel/sys_marvel.c .irq_ack = marvel_irq_noop,