From: Akinobu Mita <akinobu.mita@gmail.com>
Date: Mon, 29 Apr 2013 23:21:25 +0000 (-0700)
Subject: uuid: use prandom_bytes()
X-Git-Tag: v3.10-rc1~178^2~17
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=cedddb00023b1321f2bb2739739aa8c9927fc063;p=profile%2Fivi%2Fkernel-x86-ivi.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>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/lib/uuid.c b/lib/uuid.c
index 52a6fe6..398821e 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;
 }