diff --git a/[refs] b/[refs]
index 035c69f2feea..dea2f5f509b3 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 13ffa927abb74d4365b0e22f186befe4746b5897
+refs/heads/master: 53ba5e09fe37518683ff8b3f28410ce0b9ed2f74
diff --git a/trunk/include/asm-s390/timex.h b/trunk/include/asm-s390/timex.h
index 4848057dafe4..5d0332a4c2bd 100644
--- a/trunk/include/asm-s390/timex.h
+++ b/trunk/include/asm-s390/timex.h
@@ -19,7 +19,7 @@ static inline cycles_t get_cycles(void)
 {
 	cycles_t cycles;
 
-	__asm__("stck 0(%1)" : "=m" (cycles) : "a" (&cycles) : "cc");
+	__asm__ __volatile__ ("stck 0(%1)" : "=m" (cycles) : "a" (&cycles) : "cc");
 	return cycles >> 2;
 }
 
@@ -27,7 +27,7 @@ static inline unsigned long long get_clock (void)
 {
 	unsigned long long clk;
 
-	__asm__("stck 0(%1)" : "=m" (clk) : "a" (&clk) : "cc");
+	__asm__ __volatile__ ("stck 0(%1)" : "=m" (clk) : "a" (&clk) : "cc");
 	return clk;
 }