[PATCH] proc_misc.c needs irq.h

fs/proc/proc_misc.c: In function `show_stat':
fs/proc/proc_misc.c:423: `irq_desc' undeclared (first use in this function)

fs/proc/proc_misc.c

@@ -44,6 +44,7 @@
 #include <linux/jiffies.h>
 #include <linux/sysrq.h>
 #include <linux/vmalloc.h>
+#include <linux/irq.h>
 #include <asm/uaccess.h>
 #include <asm/pgtable.h>
 #include <asm/io.h>