x86: use NR_IRQS_LEGACY

Impact: cleanup

Introduce NR_IRQS_LEGACY instead of hard coded number.

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 1 insertions, 1 deletions

diff --git a/arch/x86/kernel/irqinit_32.c b/arch/x86/kernel/irqinit_32.c
index 5a5651b7f9e6..6a92f47c52e7 100644
--- a/arch/x86/kernel/irqinit_32.c
+++ b/arch/x86/kernel/irqinit_32.c
@@ -68,7 +68,7 @@ void __init init_ISA_irqs (void)
         /*
          * 16 old-style INTA-cycle interrupts:
          */
-        for (i = 0; i < 16; i++) {
+        for (i = 0; i < NR_IRQS_LEGACY; i++) {
                 struct irq_desc *desc = irq_to_desc(i);
 
                 desc->status = IRQ_DISABLED;