ipic_mask_irq 657 arch/powerpc/sysdev/ipic.c .irq_mask = ipic_mask_irq, ipic_mask_irq 658 arch/powerpc/sysdev/ipic.c .irq_mask_ack = ipic_mask_irq, ipic_mask_irq 665 arch/powerpc/sysdev/ipic.c .irq_mask = ipic_mask_irq,