From: Jonathan Liu <net147@gmail.com>
Date: Wed, 2 Oct 2013 10:47:11 +0000 (+0000)
Subject: boot-directdisk: avoid loop in MBR disk signature generation
X-Git-Tag: 2015-4~5009
X-Git-Url: https://code.ossystems.io/gitweb?a=commitdiff_plain;h=34c74ba45c04efc2dd998545bf7a31d7b06a0ee0;p=openembedded-core.git

boot-directdisk: avoid loop in MBR disk signature generation

Instead of looping until the generated signature is non-zero, just
return 'ffffffff' if it's zero. This avoids an infinite loop if the
generated signature is always zero.

Signed-off-by: Jonathan Liu <net147@gmail.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
---

diff --git a/meta/classes/boot-directdisk.bbclass b/meta/classes/boot-directdisk.bbclass
index 0f64b44f87..55357283ac 100644
--- a/meta/classes/boot-directdisk.bbclass
+++ b/meta/classes/boot-directdisk.bbclass
@@ -148,11 +148,12 @@ python do_bootdirectdisk() {
 def generate_disk_signature():
     import uuid
 
-    while True:
-        signature = str(uuid.uuid4())[:8]
+    signature = str(uuid.uuid4())[:8]
 
-        if signature != '00000000':
-            return signature
+    if signature != '00000000':
+        return signature
+    else:
+        return 'ffffffff'
 
 def validate_disk_signature(d):
     import re