mask_ack_irq      352 kernel/irq/chip.c 	mask_ack_irq(desc, irq);
mask_ack_irq      468 kernel/irq/chip.c 		mask_ack_irq(desc, irq);
mask_ack_irq      575 kernel/irq/chip.c 			mask_ack_irq(desc, irq);