From: Julia Lawall julia.lawall@lip6.fr
[ Upstream commit 4c6d8fc20b09f9684743afd72e4dbc3f15524479 ]
Add an of_node_put when the result of of_graph_get_remote_port_parent is not available.
Add a second of_node_put if no encoder is selected (encoder remains NULL).
The semantic match that finds the first problem is as follows (http://coccinelle.lip6.fr):
// <smpl> @r exists@ local idexpression e; expression x; @@ e = of_graph_get_remote_port_parent(...); ... when != x = e when != true e == NULL when != of_node_put(e) when != of_fwnode_handle(e) ( return e; | *return ...; ) // </smpl>
Signed-off-by: Julia Lawall Julia.Lawall@lip6.fr Reviewed-by: Laurent Pinchart laurent.pinchart+renesas@ideasonboard.com Reviewed-by: Kieran Bingham kieran.bingham+renesas@ideasonboard.com Signed-off-by: Laurent Pinchart laurent.pinchart+renesas@ideasonboard.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpu/drm/rcar-du/rcar_du_kms.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_kms.c b/drivers/gpu/drm/rcar-du/rcar_du_kms.c index 9c7007d45408..f9a90ff24e6d 100644 --- a/drivers/gpu/drm/rcar-du/rcar_du_kms.c +++ b/drivers/gpu/drm/rcar-du/rcar_du_kms.c @@ -331,6 +331,7 @@ static int rcar_du_encoders_init_one(struct rcar_du_device *rcdu, dev_dbg(rcdu->dev, "connected entity %pOF is disabled, skipping\n", entity); + of_node_put(entity); return -ENODEV; }
@@ -366,6 +367,7 @@ static int rcar_du_encoders_init_one(struct rcar_du_device *rcdu, dev_warn(rcdu->dev, "no encoder found for endpoint %pOF, skipping\n", ep->local_node); + of_node_put(entity); return -ENODEV; }