x86: check with without_new in show_interrupts

so we don't get new one that we don't need it.

Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/arch/x86/kernel/irq_64.c b/arch/x86/kernel/irq_64.c
index f58b995..f337f87 100644 (file)
--- a/arch/x86/kernel/irq_64.c
+++ b/arch/x86/kernel/irq_64.c
@@ -83,7 +83,10 @@ int show_interrupts(struct seq_file *p, void *v)
 
        if (i < nr_irqs) {
                unsigned any_count = 0;
-               struct irq_desc *desc = irq_to_desc(i);
+               struct irq_desc *desc = __irq_to_desc(i);
+
+               if (!desc)
+                       return 0;
 
                spin_lock_irqsave(&desc->lock, flags);
 #ifndef CONFIG_SMP