linux-kernel - [PATCH] drm/omap: switch to drm_of_find_panel_or

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Date:   Sun, 20 Feb 2022 20:52:12 +0100
From:   José Expósito <jose.exposito89@...il.com>
To:     tomba@...nel.org
Cc:     airlied@...ux.ie, daniel@...ll.ch, maxime@...no.tech,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        José Expósito <jose.exposito89@...il.com>
Subject: [PATCH] drm/omap: switch to drm_of_find_panel_or_bridge

Use the "drm_of_find_panel_or_bridge" function instead of a custom
version of it to reduce the boilerplate.

Signed-off-by: José Expósito <jose.exposito89@...il.com>
---
 drivers/gpu/drm/omapdrm/dss/output.c | 21 ++++++++-------------
 1 file changed, 8 insertions(+), 13 deletions(-)

diff --git a/drivers/gpu/drm/omapdrm/dss/output.c b/drivers/gpu/drm/omapdrm/dss/output.c
index 7378e855c278..00af27589296 100644
--- a/drivers/gpu/drm/omapdrm/dss/output.c
+++ b/drivers/gpu/drm/omapdrm/dss/output.c
@@ -20,23 +20,18 @@
 int omapdss_device_init_output(struct omap_dss_device *out,
 			       struct drm_bridge *local_bridge)
 {
-	struct device_node *remote_node;
 	int ret;
 
-	remote_node = of_graph_get_remote_node(out->dev->of_node,
-					       out->of_port, 0);
-	if (!remote_node) {
-		dev_dbg(out->dev, "failed to find video sink\n");
-		return 0;
+	ret = drm_of_find_panel_or_bridge(out->dev->of_node, out->of_port, 0,
+					  &out->panel, &out->bridge);
+	if (ret) {
+		if (ret == -ENODEV) {
+			dev_dbg(out->dev, "failed to find video sink\n");
+			return 0;
+		}
+		goto error;
 	}
 
-	out->bridge = of_drm_find_bridge(remote_node);
-	out->panel = of_drm_find_panel(remote_node);
-	if (IS_ERR(out->panel))
-		out->panel = NULL;
-
-	of_node_put(remote_node);
-
 	if (out->panel) {
 		struct drm_bridge *bridge;
 
-- 
2.25.1