diff --git a/arch/blackfin/kernel/irqchip.c b/arch/blackfin/kernel/irqchip.c
index 36bba30..8abb642 100644
--- a/arch/blackfin/kernel/irqchip.c
+++ b/arch/blackfin/kernel/irqchip.c
@@ -54,6 +54,7 @@
 #error "Blackfin architecture does not support CONFIG_CPUMASK_OFFSTACK."
 #endif
 
+#ifdef CONFIG_PROC_FS
 int show_interrupts(struct seq_file *p, void *v)
 {
 	int i = *(loff_t *) v, j;
@@ -85,6 +86,7 @@
 	}
 	return 0;
 }
+#endif
 
 /*
  * do_IRQ handles all hardware IRQs.  Decoded IRQs should not