Merge commit 'v2.6.29-rc1' into perfcounters/core

[firefly-linux-kernel-4.4.55.git] / arch / x86 / kernel / irq.c

diff --git a/arch/x86/kernel/irq.c b/arch/x86/kernel/irq.c
index d92bc71e41a7c594442087a25a63b35a474d1774..22f650db917fc2615f34741b11035bb74a6d5656 100644 (file)
--- a/arch/x86/kernel/irq.c
+++ b/arch/x86/kernel/irq.c
@@ -5,10 +5,11 @@
 #include <linux/interrupt.h>
 #include <linux/kernel_stat.h>
 #include <linux/seq_file.h>
+#include <linux/smp.h>
 
 #include <asm/apic.h>
 #include <asm/io_apic.h>
-#include <asm/smp.h>
+#include <asm/irq.h>
 
 atomic_t irq_err_count;
 
@@ -122,6 +123,9 @@ 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);
@@ -192,3 +196,5 @@ u64 arch_irq_stat(void)
 #endif
        return sum;
 }
+
+EXPORT_SYMBOL_GPL(vector_used_by_percpu_irq);