fdt: off by one in ofnode_lookup_fdt()

The "oftree_count" is the number of entries which have been set in
the oftree_list[] array.  If all the entries have been initialized then
this off by one would result in reading one element beyond the end
of the array.

Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: Simon Glass <sjg@chromium.org>

diff --git a/drivers/core/ofnode.c b/drivers/core/ofnode.c
index 8df16e56af5c1f3ea1611ce26992960fdf3a5d79..a4dc9bde085cce514bc56c0deb791fcc8ea7be3d 100644 (file)
--- a/drivers/core/ofnode.c
+++ b/drivers/core/ofnode.c
@@ -103,7 +103,7 @@ void *ofnode_lookup_fdt(ofnode node)
        if (gd->flags & GD_FLG_RELOC) {
                uint i = OFTREE_TREE_ID(node.of_offset);
 
-               if (i > oftree_count) {
+               if (i >= oftree_count) {
                        log_debug("Invalid tree ID %x\n", i);
                        return NULL;
                }