--- zzzz-none-000/linux-3.10.107/arch/arm/common/vlock.S	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/arch/arm/common/vlock.S	2021-02-04 17:41:59.000000000 +0000
@@ -42,7 +42,7 @@
 	dmb
 	mov	\rscratch, #0
 	strb	\rscratch, [\rbase, \rcpu]
-	dsb
+	dsb	st
 	sev
 .endm
 
@@ -102,7 +102,7 @@
 	dmb
 	mov	r1, #VLOCK_OWNER_NONE
 	strb	r1, [r0, #VLOCK_OWNER_OFFSET]
-	dsb
+	dsb	st
 	sev
 	bx	lr
 ENDPROC(vlock_unlock)