ARM: boot: Add an implementation of strnlen for libfdt



Recent versions of libfdt add a dependency on strnlen. Copy the
implementation in lib/string.c here, so we can update libfdt.

Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Rob Herring <robh@kernel.org>

parent 60c7f4cb

arch/arm/boot/compressed/string.c

+9 −0

Original line number	Diff line number	Diff line
		@@ -65,6 +65,15 @@ size_t strlen(const char *s)
		return sc - s;
		}

		size_t strnlen(const char *s, size_t count)
		{
		const char *sc;

		for (sc = s; count-- && *sc != '\0'; ++sc)
		/* nothing */;
		return sc - s;
		}

		int memcmp(const void cs, const void ct, size_t count)
		{
		const unsigned char su1 = cs, su2 = ct, *end = su1 + count;