From nobody Fri Sep 25 04:09:08 2026 Received: from cstnet.cn (smtp25.cstnet.cn [159.226.251.25]) (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 2EB395C613; Wed, 16 Sep 2026 18:06:38 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=159.226.251.25 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789582018; cv=none; b=SBlPHINJtLFpFUdqz7Cp6O51mjuM6OK04B/3U+d7tJEahS1bvkCnLHfKWT9q/ElwJXE9V7oCrg8y0T/rOR3TkrthSQP9IzPEGz1YF47HOKorablHJOLIZnkkpvbq1OYkaJSa57h0m4lu06fNBS87JBOwk7pCPV96xsEB1ZT//Z4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789582018; c=relaxed/simple; bh=4AnRJ1XeQlYuEAo8rWrIHNuSrlOvPwd4usuLRJNZnSM=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=F/MKRrtsWocD+ks3Zta/6Zih6BwnpDRXLWMtF1wl27Y7TcrqzzfrmtUA7a8qekd0zFRtIgW3tnEn0jPZcQkAdidPnaxnhLnVTJDQCrFB5EF3ty0tXT2H3uVF3xNMNf10cEo6lHw9ozFVW08RpuWWmONj/t4elCHBEYS7EEy3sM8= 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=159.226.251.25 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-05 (Coremail) with SMTP id zQCowABXiEKZ2qpqHS1vCA--.23862S2; Thu, 17 Sep 2026 02:06:17 +0800 (CST) From: Wentao Liang To: airlied@gmail.com Cc: architt@codeaurora.org, bcm-kernel-feedback-list@broadcom.com, dri-devel@lists.freedesktop.org, eric@anholt.net, florian.fainelli@broadcom.com, jesszhan0024@gmail.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-rpi-kernel@lists.infradead.org, maarten.lankhorst@linux.intel.com, mripard@kernel.org, neil.armstrong@linaro.org, simona@ffwll.ch, treding@nvidia.com, tzimmermann@suse.de, Wentao Liang , stable@vger.kernel.org Subject: [PATCH] drm/panel: Fix node reference leak in rpi_touchscreen_probe() Date: Wed, 16 Sep 2026 18:05:49 +0000 Message-Id: <20260916180549.2090497-1-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: zQCowABXiEKZ2qpqHS1vCA--.23862S2 X-Coremail-Antispam: 1UD129KBjvdXoWrKr4ktrW5ZryUXw1rKw1rWFg_yoWkArXEkr yFqF9rXr1UJFyDur17A3ZxArsakFn8urWfAa18ta4Sk347urnrXayfW34UXr1DGF4jyr98 Xw17XF1FgrsrGjkaLaAFLSUrUUUUjb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUIcSsGvfJTRUUUb-xFF20E14v26ryj6rWUM7CY07I20VC2zVCF04k26cxKx2IYs7xG 6rWj6s0DM7CIcVAFz4kK6r1j6r18M28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8w A2z4x0Y4vE2Ix0cI8IcVAFwI0_Xr0_Ar1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Gr1j 6F4UJwA2z4x0Y4vEx4A2jsIE14v26r4UJVWxJr1l84ACjcxK6I8E87Iv6xkF7I0E14v26F 4UJVW0owAS0I0E0xvYzxvE52x082IY62kv0487Mc02F40EFcxC0VAKzVAqx4xG6I80ewAv 7VC0I7IYx2IY67AKxVWUtVWrXwAv7VC2z280aVAFwI0_Cr0_Gr1UMcvjeVCFs4IE7xkEbV WUJVW8JwACjcxG0xvY0x0EwIxGrwACjI8F5VA0II8E6IAqYI8I648v4I1lFIxGxcIEc7Cj xVA2Y2ka0xkIwI1lc7CjxVAaw2AFwI0_GFv_Wryl42xK82IYc2Ij64vIr41l4I8I3I0E4I kC6x0Yz7v_Jr0_Gr1lx2IqxVAqx4xG67AKxVWUJVWUGwC20s026x8GjcxK67AKxVWUGVWU WwC2zVAF1VAY17CE14v26r4a6rW5MIIYrxkI7VAKI48JMIIF0xvE2Ix0cI8IcVAFwI0_JF I_Gr1lIxAIcVC0I7IYx2IY6xkF7I0E14v26r4UJVWxJr1lIxAIcVCF04k26cxKx2IYs7xG 6r1j6r1xMIIF0xvEx4A2jsIE14v26F4j6r4UJwCI42IY6I8E87Iv6xkF7I0E14v26F4UJV W0obIYCTnIWIevJa73UjIFyTuYvjTRRD7VDUUUU X-CM-SenderInfo: pyxotu46lvutnvoduhdfq/1tbiCRUMA2qqozV7RgAAs4 Content-Type: text/plain; charset="utf-8" of_graph_get_remote_port() returns a reference to the remote port node. On the success path that reference is passed to the registered DSI device and released with it, but if mipi_dsi_device_register_full() fails the reference is never dropped. Release it on the error path. Fixes: 2f733d6194bd ("drm/panel: Add support for the Raspberry Pi 7" Touchs= creen.") Cc: stable@vger.kernel.org Signed-off-by: Wentao Liang Reviewed-by: Neil Armstrong --- drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c b/driver= s/gpu/drm/panel/panel-raspberrypi-touchscreen.c index dc4bb8ad9131..c14776561623 100644 --- a/drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c +++ b/drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c @@ -428,6 +428,7 @@ static int rpi_touchscreen_probe(struct i2c_client *i2c) if (IS_ERR(ts->dsi)) { dev_err(dev, "DSI device registration failed: %ld\n", PTR_ERR(ts->dsi)); + of_node_put(info.node); return PTR_ERR(ts->dsi); } =20 --=20 2.34.1