--- zzzz-none-000/linux-2.6.32.61/arch/mips/include/asm/smtc_ipi.h	2013-06-10 09:43:48.000000000 +0000
+++ ar9-7330-650/linux-2.6.32.61/arch/mips/include/asm/smtc_ipi.h	2013-09-12 09:59:53.000000000 +0000
@@ -45,7 +45,7 @@
 	spinlock_t lock;
 	struct smtc_ipi *tail;
 	int depth;
-	int resched_flag;	/* reschedule already queued */
+	volatile int resched_flag;	/* reschedule already queued */
 };
 
 static inline void smtc_ipi_nq(struct smtc_ipi_q *q, struct smtc_ipi *p)