From: Akinobu Mita <akinobu.mita@gmail.com>
Date: Wed, 20 Mar 2013 04:08:44 +0000 (+1100)
Subject: uuid: use prandom_bytes()
X-Git-Tag: next-20130322~1^2~73
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=1cb227dd5f0d2291228a288ae42976b9a2ba3a5a;p=karo-tx-linux.git

uuid: use prandom_bytes()

Use prandom_bytes() to generate 16 bytes of pseudo-random bytes.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: "Theodore Ts'o" <tytso@mit.edu>
Cc: Huang Ying <ying.huang@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

diff --git a/lib/uuid.c b/lib/uuid.c
index 52a6fe6387de..398821e4dce1 100644
--- a/lib/uuid.c
+++ b/lib/uuid.c
@@ -25,13 +25,7 @@
 
 static void __uuid_gen_common(__u8 b[16])
 {
-	int i;
-	u32 r;
-
-	for (i = 0; i < 4; i++) {
-		r = random32();
-		memcpy(b + i * 4, &r, 4);
-	}
+	prandom_bytes(b, 16);
 	/* reversion 0b10 */
 	b[8] = (b[8] & 0x3F) | 0x80;
 }