diff --git a/[refs] b/[refs]
index 097850027c00..735e7df09aad 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: d5812a77e5803468a5033be91af978be0f7a17d9
+refs/heads/master: 1bdacf88ebd7969fecbbf4c5b388cc094871222e
diff --git a/trunk/arch/ppc/syslib/cpm2_pic.c b/trunk/arch/ppc/syslib/cpm2_pic.c
index 954b07fc1df3..c867be6981cb 100644
--- a/trunk/arch/ppc/syslib/cpm2_pic.c
+++ b/trunk/arch/ppc/syslib/cpm2_pic.c
@@ -107,6 +107,11 @@ static void cpm2_end_irq(unsigned int irq_nr)
 		simr = &(cpm2_immr->im_intctl.ic_simrh);
 		ppc_cached_irq_mask[word] |= 1 << bit;
 		simr[word] = ppc_cached_irq_mask[word];
+		/*
+		 * Work around large numbers of spurious IRQs on PowerPC 82xx
+		 * systems.
+		 */
+		mb();
 	}
 }