From: Luca Ceresoli <luca.ceresoli@bootlin.com>
Date: Tue, 8 Jul 2025 15:48:21 +0000 (+0200)
Subject: drm/atomic-helper: put the bridge returned by drm_bridge_chain_get_first_bridge()
X-Git-Tag: v6.18-rc1~134^2~22^2~82
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=c26c844390e1384c49dd9a395c3bab268dcb5bea;p=thirdparty%2Flinux.git

drm/atomic-helper: put the bridge returned by drm_bridge_chain_get_first_bridge()

The bridge returned by drm_bridge_chain_get_first_bridge() is
refcounted. Put it when done.

Reviewed-by: Maxime Ripard <mripard@kernel.org>
Link: https://lore.kernel.org/r/20250708-drm-bridge-alloc-getput-drm_bridge_chain_get_first_bridge-v9-4-db1ba3df7f58@bootlin.com
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
---

diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c
index ef56b474acf59..d5ebe6ea0acbc 100644
--- a/drivers/gpu/drm/drm_atomic_helper.c
+++ b/drivers/gpu/drm/drm_atomic_helper.c
@@ -456,6 +456,7 @@ mode_fixup(struct drm_atomic_state *state)
 		ret = drm_atomic_bridge_chain_check(bridge,
 						    new_crtc_state,
 						    new_conn_state);
+		drm_bridge_put(bridge);
 		if (ret) {
 			drm_dbg_atomic(encoder->dev, "Bridge atomic check failed\n");
 			return ret;
@@ -527,6 +528,7 @@ static enum drm_mode_status mode_valid_path(struct drm_connector *connector,
 	bridge = drm_bridge_chain_get_first_bridge(encoder);
 	ret = drm_bridge_chain_mode_valid(bridge, &connector->display_info,
 					  mode);
+	drm_bridge_put(bridge);
 	if (ret != MODE_OK) {
 		drm_dbg_atomic(encoder->dev, "[BRIDGE] mode_valid() failed\n");
 		return ret;
@@ -1212,6 +1214,7 @@ encoder_bridge_disable(struct drm_device *dev, struct drm_atomic_state *state)
 		 */
 		bridge = drm_bridge_chain_get_first_bridge(encoder);
 		drm_atomic_bridge_chain_disable(bridge, state);
+		drm_bridge_put(bridge);
 
 		/* Right function depends upon target state. */
 		if (funcs) {
@@ -1329,6 +1332,7 @@ encoder_bridge_post_disable(struct drm_device *dev, struct drm_atomic_state *sta
 		 */
 		bridge = drm_bridge_chain_get_first_bridge(encoder);
 		drm_atomic_bridge_chain_post_disable(bridge, state);
+		drm_bridge_put(bridge);
 	}
 }
 
@@ -1501,6 +1505,7 @@ crtc_set_mode(struct drm_device *dev, struct drm_atomic_state *state)
 
 		bridge = drm_bridge_chain_get_first_bridge(encoder);
 		drm_bridge_chain_mode_set(bridge, mode, adjusted_mode);
+		drm_bridge_put(bridge);
 	}
 }
 
@@ -1580,6 +1585,7 @@ encoder_bridge_pre_enable(struct drm_device *dev, struct drm_atomic_state *state
 		 */
 		bridge = drm_bridge_chain_get_first_bridge(encoder);
 		drm_atomic_bridge_chain_pre_enable(bridge, state);
+		drm_bridge_put(bridge);
 	}
 }
 
@@ -1655,6 +1661,7 @@ encoder_bridge_enable(struct drm_device *dev, struct drm_atomic_state *state)
 		}
 
 		drm_atomic_bridge_chain_enable(bridge, state);
+		drm_bridge_put(bridge);
 	}
 }