diff --git a/[refs] b/[refs]
index 16fdb99bfd1e..b905b07d4545 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 73b63efaac7352c9e2bf1570fac98fd44a99f8f9
+refs/heads/master: 8553cb67d2318db327071018fc81084cbabccc46
diff --git a/trunk/arch/arm/mm/proc-v6.S b/trunk/arch/arm/mm/proc-v6.S
index 294943b85973..f0cc599facb7 100644
--- a/trunk/arch/arm/mm/proc-v6.S
+++ b/trunk/arch/arm/mm/proc-v6.S
@@ -71,6 +71,8 @@ ENTRY(cpu_v6_reset)
  *	IRQs are already disabled.
  */
 ENTRY(cpu_v6_do_idle)
+	mov	r1, #0
+	mcr	p15, 0, r1, c7, c10, 4		@ DWB - WFI may enter a low-power mode
 	mcr	p15, 0, r1, c7, c0, 4		@ wait for interrupt
 	mov	pc, lr
 
diff --git a/trunk/arch/arm/mm/proc-v7.S b/trunk/arch/arm/mm/proc-v7.S
index 721b7d53bfd8..0e11d9716a7d 100644
--- a/trunk/arch/arm/mm/proc-v7.S
+++ b/trunk/arch/arm/mm/proc-v7.S
@@ -63,6 +63,7 @@ ENDPROC(cpu_v7_reset)
  *	IRQs are already disabled.
  */
 ENTRY(cpu_v7_do_idle)
+	dsb					@ WFI may enter a low-power mode
 	wfi
 	mov	pc, lr
 ENDPROC(cpu_v7_do_idle)