linux-kernel - [PATCH v2 6/9] drm/display: bridge_connector: use drm_bridge_is

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Message-Id: <20250801-drm-bridge-alloc-getput-drm_bridge_get_next_bridge-v2-6-888912b0be13@bootlin.com>
Date: Fri, 01 Aug 2025 19:05:28 +0200
From: Luca Ceresoli <luca.ceresoli@...tlin.com>
To: Andrzej Hajda <andrzej.hajda@...el.com>, 
 Neil Armstrong <neil.armstrong@...aro.org>, Robert Foss <rfoss@...nel.org>, 
 Laurent Pinchart <Laurent.pinchart@...asonboard.com>, 
 Jonas Karlman <jonas@...boo.se>, Jernej Skrabec <jernej.skrabec@...il.com>, 
 Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, 
 Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>, 
 David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>, 
 Liu Ying <victor.liu@....com>, Shawn Guo <shawnguo@...nel.org>, 
 Sascha Hauer <s.hauer@...gutronix.de>, 
 Pengutronix Kernel Team <kernel@...gutronix.de>, 
 Fabio Estevam <festevam@...il.com>, 
 Tomi Valkeinen <tomi.valkeinen@...asonboard.com>, 
 Philipp Zabel <p.zabel@...gutronix.de>
Cc: Hui Pu <Hui.Pu@...ealthcare.com>, 
 Thomas Petazzoni <thomas.petazzoni@...tlin.com>, 
 linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org, 
 imx@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org, 
 Luca Ceresoli <luca.ceresoli@...tlin.com>
Subject: [PATCH v2 6/9] drm/display: bridge_connector: use
 drm_bridge_is_last()

Simplify code to know whether a bridge is the last in the chain by using
drm_bridge_is_last().

Reviewed-by: Maxime Ripard <mripard@...nel.org>
Signed-off-by: Luca Ceresoli <luca.ceresoli@...tlin.com>
---
 drivers/gpu/drm/display/drm_bridge_connector.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/display/drm_bridge_connector.c b/drivers/gpu/drm/display/drm_bridge_connector.c
index 51f30307d445e5ce1345d11cda391f72e7323533..16cef81d9e115f177fca19fbd9d2f1aaa043a84e 100644
--- a/drivers/gpu/drm/display/drm_bridge_connector.c
+++ b/drivers/gpu/drm/display/drm_bridge_connector.c
@@ -749,12 +749,11 @@ struct drm_connector *drm_bridge_connector_init(struct drm_device *drm,
 				return ERR_PTR(-EINVAL);
 		}
 
-		if (!drm_bridge_get_next_bridge(bridge))
+		if (drm_bridge_is_last(bridge))
 			connector_type = bridge->type;
 
 #ifdef CONFIG_OF
-		if (!drm_bridge_get_next_bridge(bridge) &&
-		    bridge->of_node)
+		if (drm_bridge_is_last(bridge) && bridge->of_node)
 			connector->fwnode = fwnode_handle_get(of_fwnode_handle(bridge->of_node));
 #endif
 

-- 
2.50.1