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Message-Id: <20250801-drm-bridge-alloc-getput-drm_bridge_get_next_bridge-v2-8-888912b0be13@bootlin.com>
Date: Fri, 01 Aug 2025 19:05:30 +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 8/9] drm/bridge: put the bridge returned by
drm_bridge_get_next_bridge()
The bridge returned by drm_bridge_get_next_bridge() is refcounted. Put it
when done. We need to ensure it is not put before either next_bridge or
next_bridge_state is in use, thus for simplicity use a cleanup action.
Signed-off-by: Luca Ceresoli <luca.ceresoli@...tlin.com>
---
Changed in v2:
- use cleanup action instead of explicit drm_bridge_put(), also fixing the
place where the ref is put
---
drivers/gpu/drm/drm_bridge.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/drm_bridge.c b/drivers/gpu/drm/drm_bridge.c
index c3bfcd735a3c426a147bf0a7427b3d2cd0df3524..ad37e27688bbfd104a95f413f6f98fecf314ade2 100644
--- a/drivers/gpu/drm/drm_bridge.c
+++ b/drivers/gpu/drm/drm_bridge.c
@@ -1121,7 +1121,6 @@ drm_atomic_bridge_propagate_bus_flags(struct drm_bridge *bridge,
struct drm_atomic_state *state)
{
struct drm_bridge_state *bridge_state, *next_bridge_state;
- struct drm_bridge *next_bridge;
u32 output_flags = 0;
bridge_state = drm_atomic_get_new_bridge_state(state, bridge);
@@ -1130,7 +1129,7 @@ drm_atomic_bridge_propagate_bus_flags(struct drm_bridge *bridge,
if (!bridge_state)
return;
- next_bridge = drm_bridge_get_next_bridge(bridge);
+ struct drm_bridge *next_bridge __free(drm_bridge_put) = drm_bridge_get_next_bridge(bridge);
/*
* Let's try to apply the most common case here, that is, propagate
--
2.50.1
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