LEGAL_IRQ         393 arch/i386/i386/ioapic.c #define	LEGAL_IRQ(x)	((x) >= 0 && (x) < APIC_ICU_LEN && (x) != 2)
LEGAL_IRQ         368 arch/i386/isa/isa_machdep.c #define	LEGAL_IRQ(x)	((x) >= 0 && (x) < ICU_LEN && (x) != 2)