Hi Julia, On 14/01/2019 16:44, 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@xxxxxxx> Thankyou for the update. Reviewed-by: Kieran Bingham <kieran.bingham+renesas@xxxxxxxxxxxxxxxx> > > --- > 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; > } >
