ARM: boot: add strrchr function

libfdt gained a new dependency on strrchr, so copy the implementation
from lib/string.c.

Cc: Russell King <linux@armlinux.org.uk>
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Rob Herring <robh@kernel.org>

diff --git a/arch/arm/boot/compressed/string.c b/arch/arm/boot/compressed/string.c
index 13c90ab..ade5079 100644 (file)
--- a/arch/arm/boot/compressed/string.c
+++ b/arch/arm/boot/compressed/string.c
@@ -121,6 +121,16 @@ char *strchr(const char *s, int c)
        return (char *)s;
 }
 
+char *strrchr(const char *s, int c)
+{
+       const char *last = NULL;
+       do {
+               if (*s == (char)c)
+                       last = s;
+       } while (*s++);
+       return (char *)last;
+}
+
 #undef memset
 
 void *memset(void *s, int c, size_t count)