File 0020-Fix-util_is_printable_string.patch of Package kernel-adaptation-bbb-v3.12

From 0854d17268a7379bddf01421bd29a12a09fbc221 Mon Sep 17 00:00:00 2001
From: Pantelis Antoniou <panto@antoniou-consulting.com>
Date: Thu, 6 Dec 2012 13:22:49 +0200
Subject: [PATCH 20/96] Fix util_is_printable_string

The method used did not account for multi-part strings.

Signed-off-by: Pantelis Antoniou <panto@antoniou-consulting.com>
---
 scripts/dtc/util.c | 20 +++++++++++++-------
 1 file changed, 13 insertions(+), 7 deletions(-)

diff --git a/scripts/dtc/util.c b/scripts/dtc/util.c
index 2422c34..45f186b 100644
--- a/scripts/dtc/util.c
+++ b/scripts/dtc/util.c
@@ -72,7 +72,7 @@ char *join_path(const char *path, const char *name)
 int util_is_printable_string(const void *data, int len)
 {
 	const char *s = data;
-	const char *ss;
+	const char *ss, *se;
 
 	/* zero length is not */
 	if (len == 0)
@@ -82,13 +82,19 @@ int util_is_printable_string(const void *data, int len)
 	if (s[len - 1] != '\0')
 		return 0;
 
-	ss = s;
-	while (*s && isprint(*s))
-		s++;
+	se = s + len;
 
-	/* not zero, or not done yet */
-	if (*s != '\0' || (s + 1 - ss) < len)
-		return 0;
+	while (s < se) {
+		ss = s;
+		while (s < se && *s && isprint(*s))
+			s++;
+
+		/* not zero, or not done yet */
+		if (*s != '\0' || s == ss)
+			return 0;
+
+		s++;
+	}
 
 	return 1;
 }
-- 
1.9.1