[PATCH] random: Create new rol32/ror32 bitops

Add rol32 and ror32 bitops to bitops.h
Signed-off-by: Matt Mackall <mpm@selenic.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

drivers/char/random.c

@@ -374,11 +374,6 @@ static struct poolinfo {
 static DECLARE_WAIT_QUEUE_HEAD(random_read_wait);
 static DECLARE_WAIT_QUEUE_HEAD(random_write_wait);
 
-static inline __u32 rol32(__u32 word, int shift)
-{
-	return (word << shift) | (word >> (32 - shift));
-}
-
 #if 0
 static int debug = 0;
 module_param(debug, bool, 0644);

include/linux/bitops.h

@@ -134,4 +134,26 @@ static inline unsigned long hweight_long(unsigned long w)
 	return sizeof(w) == 4 ? generic_hweight32(w) : generic_hweight64(w);
 }
 
+/*
+ * rol32 - rotate a 32-bit value left
+ *
+ * @word: value to rotate
+ * @shift: bits to roll
+ */
+static inline __u32 rol32(__u32 word, int shift)
+{
+	return (word << shift) | (word >> (32 - shift));
+}
+
+/*
+ * ror32 - rotate a 32-bit value right
+ *
+ * @word: value to rotate
+ * @shift: bits to roll
+ */
+static inline __u32 ror32(__u32 word, int shift)
+{
+	return (word >> shift) | (word << (32 - shift));
+}
+
 #endif