diff --git a/[refs] b/[refs]
index 8ae93a4ad3be..1f0b4ed53cb6 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: fbc94e7c3d78d53c7fa671e02e5bb6fbb3254f85
+refs/heads/master: a7cb03375d794d3494561bbad90aeab13ff7e4d0
diff --git a/trunk/arch/powerpc/kernel/head_fsl_booke.S b/trunk/arch/powerpc/kernel/head_fsl_booke.S
index 8d60fa99fc4b..0abd05f14f87 100644
--- a/trunk/arch/powerpc/kernel/head_fsl_booke.S
+++ b/trunk/arch/powerpc/kernel/head_fsl_booke.S
@@ -316,6 +316,7 @@ skpinv:	addi	r6,r6,1				/* Increment */
 	 */
 	lis	r2,DBCR0_IDM@h
 	mtspr	SPRN_DBCR0,r2
+	isync
 	/* clear any residual debug events */
 	li	r2,-1
 	mtspr	SPRN_DBSR,r2
@@ -1002,12 +1003,15 @@ _GLOBAL(giveup_fpu)
 _GLOBAL(abort)
 	li	r13,0
         mtspr   SPRN_DBCR0,r13		/* disable all debug events */
+	isync
 	mfmsr	r13
 	ori	r13,r13,MSR_DE@l	/* Enable Debug Events */
 	mtmsr	r13
+	isync
         mfspr   r13,SPRN_DBCR0
         lis	r13,(DBCR0_IDM|DBCR0_RST_CHIP)@h
         mtspr   SPRN_DBCR0,r13
+	isync
 
 _GLOBAL(set_context)
 
diff --git a/trunk/arch/ppc/kernel/head_fsl_booke.S b/trunk/arch/ppc/kernel/head_fsl_booke.S
index 8d60fa99fc4b..0abd05f14f87 100644
--- a/trunk/arch/ppc/kernel/head_fsl_booke.S
+++ b/trunk/arch/ppc/kernel/head_fsl_booke.S
@@ -316,6 +316,7 @@ skpinv:	addi	r6,r6,1				/* Increment */
 	 */
 	lis	r2,DBCR0_IDM@h
 	mtspr	SPRN_DBCR0,r2
+	isync
 	/* clear any residual debug events */
 	li	r2,-1
 	mtspr	SPRN_DBSR,r2
@@ -1002,12 +1003,15 @@ _GLOBAL(giveup_fpu)
 _GLOBAL(abort)
 	li	r13,0
         mtspr   SPRN_DBCR0,r13		/* disable all debug events */
+	isync
 	mfmsr	r13
 	ori	r13,r13,MSR_DE@l	/* Enable Debug Events */
 	mtmsr	r13
+	isync
         mfspr   r13,SPRN_DBCR0
         lis	r13,(DBCR0_IDM|DBCR0_RST_CHIP)@h
         mtspr   SPRN_DBCR0,r13
+	isync
 
 _GLOBAL(set_context)