From 6d0f5470dbdeb7f9b1e20fc9409bf07fab1b5ac5 Mon Sep 17 00:00:00 2001 From: Frank Rowand Date: Tue, 17 Oct 2017 16:36:28 -0700 Subject: of: overlay: loosen overly strict phandle clash check When an overlay contains a node that already exists in the live device tree, the overlay node is not allowed to change the phandle of the existing node. The existing check refused to allow an overlay node to set the node phandle even when the existing node did not have a phandle. Relax the check to allow an overlay node to set the phandle value if the existing node does not have a phandle. Signed-off-by: Frank Rowand Signed-off-by: Rob Herring --- drivers/of/overlay.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'drivers/of') diff --git a/drivers/of/overlay.c b/drivers/of/overlay.c index 4cdee169a5ab..791753321ed2 100644 --- a/drivers/of/overlay.c +++ b/drivers/of/overlay.c @@ -311,10 +311,10 @@ static int add_changeset_node(struct overlay_changeset *ovcs, return build_changeset_next_level(ovcs, tchild, node, 0); } - if (node->phandle) - return -EINVAL; - - ret = build_changeset_next_level(ovcs, tchild, node, 0); + if (node->phandle && tchild->phandle) + ret = -EINVAL; + else + ret = build_changeset_next_level(ovcs, tchild, node, 0); of_node_put(tchild); return ret; -- cgit v1.2.3