1 files changed, 13 insertions, 1 deletions
diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index e0443ecac84..44a639a5e4e 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -111,7 +111,19 @@
  * lower_32_bits - return bits 0-31 of a number
  * @n: the number we're accessing
  */
-#define lower_32_bits(n) ((u32)(n))
+#define lower_32_bits(n) ((u32)((n) & 0xffffffff))
+
+/**
+ * upper_16_bits - return bits 16-31 of a number
+ * @n: the number we're accessing
+ */
+#define upper_16_bits(n) ((u16)((n) >> 16))
+
+/**
+ * lower_16_bits - return bits 0-15 of a number
+ * @n: the number we're accessing
+ */
+#define lower_16_bits(n) ((u16)((n) & 0xffff))
 
 /*
  * abs() handles unsigned and signed longs, ints, shorts and chars.  For all