From nobody Fri Sep 25 05:30:01 2026 Received: from cstnet.cn (smtp81.cstnet.cn [159.226.251.81]) (using TLSv1.2 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id BE6694BB5C1; Wed, 16 Sep 2026 10:17:14 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=159.226.251.81 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789553849; cv=none; b=qDuSazqN2O/ssQGh/ZN/bvXys6davhDbrkIL83AUdPvMtgZLGQWelkYsMw2iJz8HlcMxcCmo6Rf4RnP0eHZXu/9egHJVj0aTvXRzs32++8VkOBG/BX5CMWmIeHOpUQDCSXdsHqedSUXh1OvT2oQzP1ggiyNuP8QmF9XazCHB6vc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789553849; c=relaxed/simple; bh=GVkwIxuFT18VCMsx2q2ahzAHTO92OQow3Xrd748OWj8=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=oSUWcSY6tOGSEJx4P8Uh3fVMEFMN5EeeD2lykuj9w89S1POlYPawNlVb/yForU8OIH4mkiYyWNfYKVpOPvhJUgMjwh6wJkV4Vq+QGVzy93BwF/IA5w4Dh+l3p9Y4Im9qJyn3zuQ/3Ts147OPtoHPbPnmb/jMywABYWp0OfmSxMo= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=iscas.ac.cn; spf=pass smtp.mailfrom=iscas.ac.cn; arc=none smtp.client-ip=159.226.251.81 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=iscas.ac.cn Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=iscas.ac.cn Received: from dfae2b116770.home.arpa (unknown [36.110.52.2]) by APP-03 (Coremail) with SMTP id rQCowAAHCzmZbKpqwvXgBw--.35051S2; Wed, 16 Sep 2026 18:16:57 +0800 (CST) From: Wentao Liang To: Laurent.pinchart@ideasonboard.com Cc: airlied@gmail.com, andrzej.hajda@intel.com, dri-devel@lists.freedesktop.org, jernej.skrabec@gmail.com, jonas@kwiboo.se, linux-kernel@vger.kernel.org, lumag@kernel.org, maarten.lankhorst@linux.intel.com, mripard@kernel.org, neil.armstrong@linaro.org, rfoss@kernel.org, sam@ravnborg.org, simona@ffwll.ch, tzimmermann@suse.de, Wentao Liang , stable@vger.kernel.org Subject: [PATCH] drm/bridge: lt9611uxc: Fix DSI device node leak in lt9611uxc_probe() Date: Wed, 16 Sep 2026 10:16:29 +0000 Message-Id: <20260916101629.2017781-1-vulab@iscas.ac.cn> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-CM-TRANSID: rQCowAAHCzmZbKpqwvXgBw--.35051S2 X-Coremail-Antispam: 1UD129KBjvJXoW7CFy8XF4kuFW7ZF4xGFWxZwb_yoW8Xr1rpa 17CFyFkryUCF4xKrZrAF1UGa9IyanrtrWfCF9rGa409wnxXF47Aw4av3WFgF18Wa4UArya yF15trWUGa4kZFJanT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUU9S14x267AKxVW5JVWrJwAFc2x0x2IEx4CE42xK8VAvwI8IcIk0 rVWrJVCq3wAFIxvE14AKwVWUJVWUGwA2ocxC64kIII0Yj41l84x0c7CEw4AK67xGY2AK02 1l84ACjcxK6xIIjxv20xvE14v26ryj6F1UM28EF7xvwVC0I7IYx2IY6xkF7I0E14v26r4U JVWxJr1l84ACjcxK6I8E87Iv67AKxVW0oVCq3wA2z4x0Y4vEx4A2jsIEc7CjxVAFwI0_Gc CE3s1le2I262IYc4CY6c8Ij28IcVAaY2xG8wAqx4xG64xvF2IEw4CE5I8CrVC2j2WlYx0E 2Ix0cI8IcVAFwI0_JF0_Jw1lYx0Ex4A2jsIE14v26r4UJVWxJr1lOx8S6xCaFVCjc4AY6r 1j6r4UM4x0Y48IcxkI7VAKI48JM4x0x7Aq67IIx4CEVc8vx2IErcIFxwACI402YVCY1x02 628vn2kIc2xKxwCY1x0262kKe7AKxVW8ZVWrXwCF04k20xvY0x0EwIxGrwCFx2IqxVCFs4 IE7xkEbVWUJVW8JwC20s026c02F40E14v26r1j6r18MI8I3I0E7480Y4vE14v26r106r1r MI8E67AF67kF1VAFwI0_GFv_WrylIxkGc2Ij64vIr41lIxAIcVC0I7IYx2IY67AKxVWUCV W8JwCI42IY6xIIjxv20xvEc7CjxVAFwI0_Gr1j6F4UJwCI42IY6xAIw20EY4v20xvaj40_ Jr0_JF4lIxAIcVC2z280aVAFwI0_Cr0_Gr1UMIIF0xvEx4A2jsIEc7CjxVAFwI0_Cr1j6r xdYxBIdaVFxhVjvjDU0xZFpf9x0pRWGQhUUUUU= X-CM-SenderInfo: pyxotu46lvutnvoduhdfq/1tbiBwAMA2qqQJWs5wAAsW Content-Type: text/plain; charset="utf-8" lt9611uxc_parse_dt() obtains references to the primary and secondary DSI remote nodes with of_graph_get_remote_node() and stores them in dsi0_node and dsi1_node. If the following lookup of the panel or bridge with drm_of_find_panel_or_bridge() fails, lt9611uxc_probe() returns without calling of_node_put() on the DSI nodes, leaking the references taken by of_graph_get_remote_node(). The error paths further down in lt9611uxc_probe() already release both nodes through the err_of_put label. Route the device tree parsing failure to that label as well so the node references are dropped on that error path too. Fixes: 0cbbd5b1a012 ("drm: bridge: add support for lontium LT9611UXC bridge= ") Cc: stable@vger.kernel.org Signed-off-by: Wentao Liang --- drivers/gpu/drm/bridge/lontium-lt9611uxc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/bridge/lontium-lt9611uxc.c b/drivers/gpu/drm/b= ridge/lontium-lt9611uxc.c index 11aab07d88df..16ca26212d78 100644 --- a/drivers/gpu/drm/bridge/lontium-lt9611uxc.c +++ b/drivers/gpu/drm/bridge/lontium-lt9611uxc.c @@ -765,7 +765,7 @@ static int lt9611uxc_probe(struct i2c_client *client) ret =3D lt9611uxc_parse_dt(dev, lt9611uxc); if (ret) { dev_err(dev, "failed to parse device tree\n"); - return ret; + goto err_of_put; } =20 ret =3D lt9611uxc_gpio_init(lt9611uxc); --=20 2.34.1