[PATCH v2 02/10] string: correct prototype of strchrnul()

[Rasmus Villemoes]

Both glibc's (where this originated as a GNU extension) and the
kernel's versions of strchrnul() return "char *", not "const
char *". That also makes it consistent with the standard strchr()
function.

Reviewed-by: Simon Glass <sjg at chromium.org>
Signed-off-by: Rasmus Villemoes <rv at rasmusvillemoes.dk>
---
 include/linux/string.h | 2 +-
 lib/string.c           | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/include/linux/string.h b/include/linux/string.h
index 850356d7c3f..488a459ed99 100644
--- a/include/linux/string.h
+++ b/include/linux/string.h
@@ -63,7 +63,7 @@ extern char * strchr(const char *,int);
  * @c: character to search for
  * Return: position of @c in @s, or end of @s if not found
  */
-const char *strchrnul(const char *s, int c);
+char *strchrnul(const char *s, int c);
 
 #ifndef __HAVE_ARCH_STRRCHR
 extern char * strrchr(const char *,int);
diff --git a/lib/string.c b/lib/string.c
index 37ea8c29561..a76dcd48d20 100644
--- a/lib/string.c
+++ b/lib/string.c
@@ -263,12 +263,12 @@ char * strchr(const char * s, int c)
 }
 #endif
 
-const char *strchrnul(const char *s, int c)
+char *strchrnul(const char *s, int c)
 {
 	for (; *s != (char)c; ++s)
 		if (*s == '\0')
 			break;
-	return s;
+	return (char *)s;
 }
 
 #ifndef __HAVE_ARCH_STRRCHR
-- 
2.55.0