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From: Luca Ceresoli <luca.ceresoli@bootlin.com>
To: Andrzej Hajda <andrzej.hajda@intel.com>,
	 Neil Armstrong <neil.armstrong@linaro.org>,
	Robert Foss <rfoss@kernel.org>,
	 Laurent Pinchart <Laurent.pinchart@ideasonboard.com>,
	 Jonas Karlman <jonas@kwiboo.se>,
	Jernej Skrabec <jernej.skrabec@gmail.com>,
	 Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
	 Maxime Ripard <mripard@kernel.org>,
	Thomas Zimmermann <tzimmermann@suse.de>,
	 David Airlie <airlied@gmail.com>,
	Simona Vetter <simona@ffwll.ch>,  Miguel Ojeda <ojeda@kernel.org>,
	Nathan Chancellor <nathan@kernel.org>,
	 Nick Desaulniers <nick.desaulniers+lkml@gmail.com>,
	 Bill Wendling <morbo@google.com>,
	Justin Stitt <justinstitt@google.com>,
	 Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Cc: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>,
	 Chaoyi Chen <chaoyi.chen@rock-chips.com>,
	Hui Pu <Hui.Pu@gehealthcare.com>,
	 Thomas Petazzoni <thomas.petazzoni@bootlin.com>,
	 dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org,
	 llvm@lists.linux.dev, Luca Ceresoli <luca.ceresoli@bootlin.com>
Subject: [PATCH v2 4/9] drm/display: bridge-connector: use drm_for_each_bridge_in_chain_scoped()
Date: Fri, 08 Aug 2025 16:49:11 +0200	[thread overview]
Message-ID: <20250808-drm-bridge-alloc-getput-for_each_bridge-v2-4-edb6ee81edf1@bootlin.com> (raw)
In-Reply-To: <20250808-drm-bridge-alloc-getput-for_each_bridge-v2-0-edb6ee81edf1@bootlin.com>

Use drm_for_each_bridge_in_chain_scoped() instead of
drm_for_each_bridge_in_chain() to ensure the bridge being looped on is
refcounted.

Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
---
 drivers/gpu/drm/display/drm_bridge_connector.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/display/drm_bridge_connector.c b/drivers/gpu/drm/display/drm_bridge_connector.c
index 65d54019e5eab323ecd3dc568541ed1e1793a683..760ee00b6b02192dc1e59c213ef043a6bb9e3b60 100644
--- a/drivers/gpu/drm/display/drm_bridge_connector.c
+++ b/drivers/gpu/drm/display/drm_bridge_connector.c
@@ -136,10 +136,9 @@ static void drm_bridge_connector_hpd_notify(struct drm_connector *connector,
 {
 	struct drm_bridge_connector *bridge_connector =
 		to_drm_bridge_connector(connector);
-	struct drm_bridge *bridge;
 
 	/* Notify all bridges in the pipeline of hotplug events. */
-	drm_for_each_bridge_in_chain(bridge_connector->encoder, bridge) {
+	drm_for_each_bridge_in_chain_scoped(bridge_connector->encoder, bridge) {
 		if (bridge->funcs->hpd_notify)
 			bridge->funcs->hpd_notify(bridge, status);
 	}
@@ -638,7 +637,7 @@ struct drm_connector *drm_bridge_connector_init(struct drm_device *drm,
 	struct drm_bridge_connector *bridge_connector;
 	struct drm_connector *connector;
 	struct i2c_adapter *ddc = NULL;
-	struct drm_bridge *bridge, *panel_bridge = NULL;
+	struct drm_bridge *panel_bridge = NULL;
 	unsigned int supported_formats = BIT(HDMI_COLORSPACE_RGB);
 	unsigned int max_bpc = 8;
 	int connector_type;
@@ -665,7 +664,7 @@ struct drm_connector *drm_bridge_connector_init(struct drm_device *drm,
 	 * detection are available, we don't support hotplug detection at all.
 	 */
 	connector_type = DRM_MODE_CONNECTOR_Unknown;
-	drm_for_each_bridge_in_chain(encoder, bridge) {
+	drm_for_each_bridge_in_chain_scoped(encoder, bridge) {
 		if (!bridge->interlace_allowed)
 			connector->interlace_allowed = false;
 		if (!bridge->ycbcr_420_allowed)

-- 
2.50.1


  parent reply	other threads:[~2025-08-08 14:49 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-08-08 14:49 [PATCH v2 0/9] drm/bridge: get/put the bridge when looping over the encoder chain Luca Ceresoli
2025-08-08 14:49 ` [PATCH v2 1/9] drm/display: bridge-connector: use scope-specific variable for the bridge pointer Luca Ceresoli
2025-08-19 13:43   ` Maxime Ripard
2025-08-08 14:49 ` [PATCH v2 2/9] drm/display: bridge-connector: remove unused variable assignment Luca Ceresoli
2025-08-19 13:43   ` Maxime Ripard
2025-08-08 14:49 ` [PATCH v2 3/9] drm/bridge: add drm_for_each_bridge_in_chain_scoped() Luca Ceresoli
2025-08-19 13:47   ` Maxime Ripard
2025-08-19 16:01     ` Luca Ceresoli
2025-08-20  9:40       ` Luca Ceresoli
2025-09-02 21:53         ` Luca Ceresoli
2025-08-08 14:49 ` Luca Ceresoli [this message]
2025-08-08 14:49 ` [PATCH v2 5/9] drm/atomic: use drm_for_each_bridge_in_chain_scoped() Luca Ceresoli
2025-08-08 14:49 ` [PATCH v2 6/9] drm/bridge: " Luca Ceresoli
2025-08-08 14:49 ` [PATCH v2 7/9] drm/bridge: remove drm_for_each_bridge_in_chain() Luca Ceresoli
2025-08-08 14:49 ` [PATCH v2 8/9] drm/bridge: add drm_for_each_bridge_in_chain_from() Luca Ceresoli
2025-08-08 14:49 ` [PATCH v2 9/9] drm/omap: use drm_for_each_bridge_in_chain_from() Luca Ceresoli
2025-08-19 10:15 ` [PATCH v2 0/9] drm/bridge: get/put the bridge when looping over the encoder chain Luca Ceresoli
2025-09-05 13:54 ` (subset) " Luca Ceresoli

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