[PATCH] lib/halfmd4: Use rol32 inline function in the ROUND macro

[Alexander Kuleshov]

The <linux/bitops.h> provides rol32() inline function, let's use already
predefined function instead of direct expression.

Signed-off-by: Alexander Kuleshov <kuleshovmail@xxxxxxxxx>
---
 lib/halfmd4.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/halfmd4.c b/lib/halfmd4.c
index a8fe627..137e861 100644
--- a/lib/halfmd4.c
+++ b/lib/halfmd4.c
@@ -1,6 +1,7 @@
 #include <linux/compiler.h>
 #include <linux/export.h>
 #include <linux/cryptohash.h>
+#include <linux/bitops.h>
 
 /* F, G and H are basic MD4 functions: selection, majority, parity */
 #define F(x, y, z) ((z) ^ ((x) & ((y) ^ (z))))
@@ -14,7 +15,7 @@
  * Rotation is separate from addition to prevent recomputation
  */
 #define ROUND(f, a, b, c, d, x, s)	\
-	(a += f(b, c, d) + x, a = (a << s) | (a >> (32 - s)))
+	(a += f(b, c, d) + x, a = rol32(a, s))
 #define K1 0
 #define K2 013240474631UL
 #define K3 015666365641UL
-- 
2.5.0

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