linux-kernel - [PATCH v3 6/6] drm/bridge: synopsys: dw-dp: add bridge before attaching

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Message-Id: <20251028-b4-drm-bridge-alloc-add-before-attach-v3-6-bb8611acbbfb@bootlin.com>
Date: Tue, 28 Oct 2025 11:15:47 +0100
From: Luca Ceresoli <luca.ceresoli@...tlin.com>
To: Alain Volmat <alain.volmat@...s.st.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>, 
 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>, 
 Raphael Gallais-Pou <rgallaispou@...il.com>, 
 Andy Yan <andy.yan@...k-chips.com>
Cc: Hui Pu <Hui.Pu@...ealthcare.com>, 
 Thomas Petazzoni <thomas.petazzoni@...tlin.com>, 
 dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org, 
 Luca Ceresoli <luca.ceresoli@...tlin.com>
Subject: [PATCH v3 6/6] drm/bridge: synopsys: dw-dp: add bridge before
 attaching

DRM bridges should be always added to the global bridge list before being
attached.

Signed-off-by: Luca Ceresoli <luca.ceresoli@...tlin.com>

---

This patch was added in v3 after searching for any remaining bridges not
using drm_bridge_add().
---
 drivers/gpu/drm/bridge/synopsys/dw-dp.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/bridge/synopsys/dw-dp.c b/drivers/gpu/drm/bridge/synopsys/dw-dp.c
index 9bbfe8da3de0264acbf8725d54f2f9627662e595..82aaf74e1bc070603bdda0be3a1c6dc631ff00da 100644
--- a/drivers/gpu/drm/bridge/synopsys/dw-dp.c
+++ b/drivers/gpu/drm/bridge/synopsys/dw-dp.c
@@ -2049,6 +2049,8 @@ struct dw_dp *dw_dp_bind(struct device *dev, struct drm_encoder *encoder,
 	bridge->type = DRM_MODE_CONNECTOR_DisplayPort;
 	bridge->ycbcr_420_allowed = true;
 
+	devm_drm_bridge_add(dev, bridge);
+
 	dp->aux.dev = dev;
 	dp->aux.drm_dev = encoder->dev;
 	dp->aux.name = dev_name(dev);

-- 
2.51.0