[PATCH 3/3] drm: rcar-du: Convert rcar_du_encoders_init_one() return value to 0/<0

[Laurent Pinchart]

The function returns 1 on success, and either 0 or a negative error code
on failure. As the 0 and negative values don't need to be differentiated
by the caller, convert it to the usual scheme of returning 0 on success
and a negative error code on failure.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas at ideasonboard.com>
---
 drivers/gpu/drm/rcar-du/rcar_du_kms.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/rcar-du/rcar_du_kms.c 
b/drivers/gpu/drm/rcar-du/rcar_du_kms.c
index bca859ad204c..acbf3087a7f2 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_kms.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_kms.c
@@ -573,7 +573,7 @@ static int rcar_du_encoders_init_one(struct rcar_du_device 
*rcdu,
        if (!entity) {
                dev_dbg(rcdu->dev, "unconnected endpoint %s, skipping\n",
                        ep->local_node->full_name);
-               return 0;
+               return -ENODEV;
        }

        entity_ep_node = of_parse_phandle(ep->local_node, "remote-endpoint", 0);
@@ -596,7 +596,7 @@ static int rcar_du_encoders_init_one(struct rcar_du_device 
*rcdu,
                                 encoder->full_name);
                        of_node_put(entity_ep_node);
                        of_node_put(encoder);
-                       return 0;
+                       return -ENODEV;
                }

                break;
@@ -625,7 +625,7 @@ static int rcar_du_encoders_init_one(struct rcar_du_device 
*rcdu,
                                 encoder->full_name);
                        of_node_put(encoder);
                        of_node_put(connector);
-                       return 0;
+                       return -EINVAL;
                }
        } else {
                /*
@@ -640,14 +640,14 @@ static int rcar_du_encoders_init_one(struct 
rcar_du_device *rcdu,
        of_node_put(connector);

        if (!ret)
-               return 1;
+               return 0;

        if (ret != -EPROBE_DEFER)
                dev_warn(rcdu->dev,
                         "failed to initialize encoder %s (%d), skipping\n",
                         encoder->full_name, ret);

-       return 0;
+       return ret;
 }

 static int rcar_du_encoders_init(struct rcar_du_device *rcdu)
@@ -699,7 +699,7 @@ static int rcar_du_encoders_init(struct rcar_du_device 
*rcdu)
                        continue;
                }

-               num_encoders += ret;
+               num_encoders++;
        }

        return num_encoders;
-- 
2.3.6