diff --git a/arch/mips/include/asm/system.h b/arch/mips/include/asm/system.h
index 83b5509..bb937cc 100644
--- a/arch/mips/include/asm/system.h
+++ b/arch/mips/include/asm/system.h
@@ -95,6 +95,8 @@
 {
 	__u32 retval;
 
+	smp_mb__before_llsc();
+
 	if (kernel_uses_llsc && R10000_LLSC_WAR) {
 		unsigned long dummy;
 
@@ -147,6 +149,8 @@
 {
 	__u64 retval;
 
+	smp_mb__before_llsc();
+
 	if (kernel_uses_llsc && R10000_LLSC_WAR) {
 		unsigned long dummy;