diff --git a/[refs] b/[refs]
index ec3089e78afb..2a951370a0d1 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 2651fa2bcb1a7b06793441d50dcbf98efda592c6
+refs/heads/master: 5075baca2e95840d76210c3cfda56134007462c9
diff --git a/trunk/arch/s390/lib/Makefile b/trunk/arch/s390/lib/Makefile
index ab6735df2d21..97975ec7a274 100644
--- a/trunk/arch/s390/lib/Makefile
+++ b/trunk/arch/s390/lib/Makefile
@@ -3,6 +3,6 @@
 #
 
 lib-y += delay.o string.o uaccess_std.o uaccess_pt.o
-obj-$(CONFIG_32BIT) += div64.o qrnnd.o
+obj-$(CONFIG_32BIT) += div64.o qrnnd.o ucmpdi2.o
 lib-$(CONFIG_64BIT) += uaccess_mvcos.o
 lib-$(CONFIG_SMP) += spinlock.o
diff --git a/trunk/arch/s390/lib/ucmpdi2.c b/trunk/arch/s390/lib/ucmpdi2.c
new file mode 100644
index 000000000000..3e05ff532582
--- /dev/null
+++ b/trunk/arch/s390/lib/ucmpdi2.c
@@ -0,0 +1,26 @@
+#include <linux/module.h>
+
+union ull_union {
+	unsigned long long ull;
+	struct {
+		unsigned int high;
+		unsigned int low;
+	} ui;
+};
+
+int __ucmpdi2(unsigned long long a, unsigned long long b)
+{
+	union ull_union au = {.ull = a};
+	union ull_union bu = {.ull = b};
+
+	if (au.ui.high < bu.ui.high)
+		return 0;
+	else if (au.ui.high > bu.ui.high)
+		return 2;
+	if (au.ui.low < bu.ui.low)
+		return 0;
+	else if (au.ui.low > bu.ui.low)
+		return 2;
+	return 1;
+}
+EXPORT_SYMBOL(__ucmpdi2);