diff --git a/[refs] b/[refs]
index eb4543e27b0c..411e38c098b4 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 6c75933c00049bee59562a18843a4f133ec2bfe4
+refs/heads/master: 8640d3bf71fa0f25adf86527fe69a32372427d4b
diff --git a/trunk/arch/powerpc/sysdev/ipic.c b/trunk/arch/powerpc/sysdev/ipic.c
index 69e2630c9062..ebb7e5844012 100644
--- a/trunk/arch/powerpc/sysdev/ipic.c
+++ b/trunk/arch/powerpc/sysdev/ipic.c
@@ -781,6 +781,9 @@ struct ipic * __init ipic_init(struct device_node *node, unsigned int flags)
 	primary_ipic = ipic;
 	irq_set_default_host(primary_ipic->irqhost);
 
+	ipic_write(ipic->regs, IPIC_SIMSR_H, 0);
+	ipic_write(ipic->regs, IPIC_SIMSR_L, 0);
+
 	printk ("IPIC (%d IRQ sources) at %p\n", NR_IPIC_INTS,
 			primary_ipic->regs);