linux-kernel - [PATCH AUTOSEL 4.19 025/258] of: overlay: do not duplicate properties from overlay for new nodes

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Message-Id: <20190128155924.51521-25-sashal@kernel.org>
Date:   Mon, 28 Jan 2019 10:55:31 -0500
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Frank Rowand <frank.rowand@...y.com>,
        Sasha Levin <sashal@...nel.org>, devicetree@...r.kernel.org
Subject: [PATCH AUTOSEL 4.19 025/258] of: overlay: do not duplicate properties from overlay for new nodes

From: Frank Rowand <frank.rowand@...y.com>

[ Upstream commit 8814dc46bd9e347d4de55ec5bf8f16ea54470499 ]

When allocating a new node, add_changeset_node() was duplicating the
properties from the respective node in the overlay instead of
allocating a node with no properties.

When this patch is applied the errors reported by the devictree
unittest from patch "of: overlay: add tests to validate kfrees from
overlay removal" will no longer occur.  These error messages are of
the form:

   "OF: ERROR: ..."

and the unittest results will change from:

   ### dt-test ### end of unittest - 203 passed, 7 failed

to

   ### dt-test ### end of unittest - 210 passed, 0 failed

Tested-by: Alan Tull <atull@...nel.org>
Signed-off-by: Frank Rowand <frank.rowand@...y.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/of/overlay.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/of/overlay.c b/drivers/of/overlay.c
index baa9cee6fa2c..4b834518596f 100644
--- a/drivers/of/overlay.c
+++ b/drivers/of/overlay.c
@@ -368,7 +368,7 @@ static int add_changeset_node(struct overlay_changeset *ovcs,
 			break;
 
 	if (!tchild) {
-		tchild = __of_node_dup(node, node_kbasename);
+		tchild = __of_node_dup(NULL, node_kbasename);
 		if (!tchild)
 			return -ENOMEM;
 
-- 
2.19.1