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SubjectRe: [PATCH 1/3 v2] drm: rcar-du: add missing of_node_put
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Hi Julia,

Thank you for the patch.

On Monday, 14 January 2019 18:44:56 EET Julia Lawall wrote:
> 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@ideasonboard.com>

and applied to my tree.

> ---
> v2: Add the second of_node_put(entity);, as suggested by Kieran Bingham.
>
> 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 9c7007d..f9a90ff 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;
> }

--
Regards,

Laurent Pinchart



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