x86: check with without_new in show_interrupts
authorYinghai Lu <yhlu.kernel@gmail.com>
Wed, 20 Aug 2008 03:50:16 +0000 (20:50 -0700)
committerIngo Molnar <mingo@elte.hu>
Thu, 16 Oct 2008 14:52:51 +0000 (16:52 +0200)
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>
arch/x86/kernel/irq_64.c

index f58b995b30ee6adc7598ed98eaa09ad838a1726d..f337f87c1e1667ffc2ad90a59f3e37053ff9d10b 100644 (file)
@@ -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