sparse irq_desc[] array: core kernel and x86 changes

[deliverable/linux.git] / arch / x86 / kernel / irq.c

diff --git a/arch/x86/kernel/irq.c b/arch/x86/kernel/irq.c
index d1d4dc52f649cdd90f360d042b1055d7694f4e59..3f1d9d18df679c858bda94daae4d578c0d8cbf93 100644 (file)
--- a/arch/x86/kernel/irq.c
+++ b/arch/x86/kernel/irq.c
@@ -118,6 +118,9 @@ int show_interrupts(struct seq_file *p, void *v)
        }
 
        desc = irq_to_desc(i);
+       if (!desc)
+               return 0;
+
        spin_lock_irqsave(&desc->lock, flags);
 #ifndef CONFIG_SMP
        any_count = kstat_irqs(i);