COM_IIR            44 bsp/boot/ppc/prep/debug.c #define COM_IIR		(COM_BASE + 0x02)	/* interrupt identification register */
COM_IIR            46 bsp/boot/x86/pc/debug.c #define COM_IIR		(COM_BASE + 0x02)	/* interrupt identification register */
COM_IIR            54 bsp/drv/dev/serial/ns16550.c #define COM_IIR		(COM_BASE + 0x02)	/* interrupt identification register */