From: Luca Ceresoli Date: Mon, 11 May 2026 16:40:13 +0000 (+0200) Subject: drm/bridge: lt8713sx: switch to of_drm_get_bridge_by_endpoint() X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=898a5e07f7e39d771910fcd9ba73ba6e533f9283;p=thirdparty%2Fkernel%2Flinux.git drm/bridge: lt8713sx: switch to of_drm_get_bridge_by_endpoint() This driver calls drm_of_find_panel_or_bridge() with a NULL pointer in the @panel parameter, thus using a reduced feature set of that function. Replace this call with the simpler of_drm_get_bridge_by_endpoint(). Since of_drm_get_bridge_by_endpoint() increases the refcount of the returned bridge, ensure it is put on removal. To achieve this, instead of adding an explicit drm_bridge_put(), migrate to the bridge::next_bridge pointer which is automatically put when the bridge is eventually freed. Reviewed-by: Dmitry Baryshkov Link: https://patch.msgid.link/20260511-drm-bridge-alloc-getput-panel_or_bridge-v6-9-f61c9e498b3f@bootlin.com Signed-off-by: Luca Ceresoli --- diff --git a/drivers/gpu/drm/bridge/lontium-lt8713sx.c b/drivers/gpu/drm/bridge/lontium-lt8713sx.c index 18fac6a46db46..cee485adf5e56 100644 --- a/drivers/gpu/drm/bridge/lontium-lt8713sx.c +++ b/drivers/gpu/drm/bridge/lontium-lt8713sx.c @@ -32,7 +32,6 @@ DECLARE_CRC8_TABLE(lt8713sx_crc_table); struct lt8713sx { struct device *dev; struct drm_bridge bridge; - struct drm_bridge *next_bridge; struct regmap *regmap; /* Protects all accesses to registers by stopping the on-chip MCU */ @@ -458,7 +457,7 @@ static int lt8713sx_bridge_attach(struct drm_bridge *bridge, struct lt8713sx *lt8713sx = container_of(bridge, struct lt8713sx, bridge); return drm_bridge_attach(encoder, - lt8713sx->next_bridge, + lt8713sx->bridge.next_bridge, bridge, flags); } @@ -537,10 +536,9 @@ static int lt8713sx_probe(struct i2c_client *client) if (IS_ERR(lt8713sx->regmap)) return dev_err_probe(dev, PTR_ERR(lt8713sx->regmap), "regmap i2c init failed\n"); - ret = drm_of_find_panel_or_bridge(lt8713sx->dev->of_node, 1, -1, NULL, - <8713sx->next_bridge); - if (ret < 0) - return ret; + lt8713sx->bridge.next_bridge = of_drm_get_bridge_by_endpoint(lt8713sx->dev->of_node, 1, -1); + if (IS_ERR(lt8713sx->bridge.next_bridge)) + return PTR_ERR(lt8713sx->bridge.next_bridge); ret = lt8713sx_gpio_init(lt8713sx); if (ret < 0)