[U-Boot] [PATCH] libfdt: fix return code of fdt_get_string_index()

[Masahiro Yamada]

As mentioned in the comment block in include/libfdt.h,
fdt_get_string_index() is supposed to return a negative value
on error.

BTW, looks like this function was added only for U-Boot in spite of
its location, so we need not send a bug report back to the DTC ML.

Signed-off-by: Masahiro Yamada <yamada.masahiro at socionext.com>
Fixes: commit 5094eb408a5d ("fdt: Add functions to retrieve strings")
---

 lib/libfdt/fdt_ro.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/libfdt/fdt_ro.c b/lib/libfdt/fdt_ro.c
index 44fc0aa..38bfcbd 100644
--- a/lib/libfdt/fdt_ro.c
+++ b/lib/libfdt/fdt_ro.c
@@ -577,7 +577,7 @@ int fdt_get_string_index(const void *fdt, int node, const char *property,
 		index--;
 	}
 
-	return FDT_ERR_NOTFOUND;
+	return -FDT_ERR_NOTFOUND;
 }
 
 int fdt_get_string(const void *fdt, int node, const char *property,
-- 
1.9.1