drivers/of: Validate device node in __unflatten_device_tree()

[cascardo/linux.git] / drivers / of / fdt.c

diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c
index 55f1b83..085c638 100644 (file)
--- a/drivers/of/fdt.c
+++ b/drivers/of/fdt.c
@@ -517,7 +517,7 @@ static void *__unflatten_device_tree(const void *blob,
                pr_warning("End of tree marker overwritten: %08x\n",
                           be32_to_cpup(mem + size));
 
-       if (detached) {
+       if (detached && mynodes) {
                of_node_set_flag(*mynodes, OF_DETACHED);
                pr_debug("unflattened tree is detached\n");
        }