libfdt: fix fdt_stringlist_search()

If fdt_getprop() fails, negative error code should be returned.

[ DTC commit: daa75e8fa5942caa8e97931aed3a1ee0b7edd74b ]

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

diff --git a/lib/libfdt/fdt_ro.c b/lib/libfdt/fdt_ro.c
index fc08981..1be9538 100644 (file)
--- a/lib/libfdt/fdt_ro.c
+++ b/lib/libfdt/fdt_ro.c
@@ -576,7 +576,7 @@ int fdt_stringlist_search(const void *fdt, int nodeoffset, const char *property,
 
        list = fdt_getprop(fdt, nodeoffset, property, &length);
        if (!list)
-               return -length;
+               return length;
 
        len = strlen(string) + 1;
        end = list + length;