From nobody Fri Sep 25 05:29:59 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 20CB04CB8D9 for ; Wed, 16 Sep 2026 10:12:37 +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=1789553574; cv=none; b=tY3R5pFUgGFj52oIJbLTGSFWRK+k+F/zY3qvonk/SCQo1lb3GDft+UW3frSbZJSp9tBY0LOcKEcoy6hfB+glfCpezeVIqXs5wjNU/PGiLL97pbkGHBlhIQgzXXuqmCdVoX0swv/yW5aauc+rIaYKpJRH0htWtqoJgq7MTbVowFs= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789553574; c=relaxed/simple; bh=6TaFek2+DOgiPwvcVKEEhlrsxhjS+rQPF1bgcrDs+ps=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=SWssLuInJ0dEv9TzU4BmLDEFl4U8b0RaDgrygMY56OOSeYhV77lr2rFqXt/VnPM2P8JAFt+XY4NsVq4A63v4tke68LqDUfKiR/B029/iipQGBT9uAZ/yMVMwTKhhffGqOT8rLOAkuFhvLeqpBM0LKiQDV0sI+buE4ctjMzXEpIA= 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 rQCowACnrTt+a6pqrujgBw--.42778S2; Wed, 16 Sep 2026 18:12:15 +0800 (CST) From: Wentao Liang To: Frank.Li@nxp.com Cc: Laurent.pinchart@ideasonboard.com, airlied@gmail.com, andrzej.hajda@intel.com, dri-devel@lists.freedesktop.org, festevam@gmail.com, imx@lists.linux.dev, jernej.skrabec@gmail.com, jonas@kwiboo.se, kernel@pengutronix.de, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, luca.ceresoli@bootlin.com, maarten.lankhorst@linux.intel.com, mripard@kernel.org, neil.armstrong@linaro.org, rfoss@kernel.org, s.hauer@pengutronix.de, simona@ffwll.ch, tzimmermann@suse.de, victor.liu@nxp.com, Wentao Liang Subject: [PATCH] drm/bridge: imx8mp-hdmi-pvi: Fix next_bridge reference leak Date: Wed, 16 Sep 2026 10:11:46 +0000 Message-Id: <20260916101146.2015255-1-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: rQCowACnrTt+a6pqrujgBw--.42778S2 X-Coremail-Antispam: 1UD129KBjvdXoWrtF1kuFW8XF4DJFy7Ar47urg_yoWkCFg_uF n8ZrW8Xr43Cr1qgw12yr43ZasFy3WDWFW7uF12grZ3trWavr9avw47XrykWry7ZF4fGF9r Ar4qqFWkZr17CjkaLaAFLSUrUUUUjb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUIcSsGvfJTRUUUbaAFF20E14v26ryj6rWUM7CY07I20VC2zVCF04k26cxKx2IYs7xG 6rWj6s0DM7CIcVAFz4kK6r1j6r18M28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8w A2z4x0Y4vE2Ix0cI8IcVAFwI0_Xr0_Ar1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Gr1j 6F4UJwA2z4x0Y4vEx4A2jsIE14v26rxl6s0DM28EF7xvwVC2z280aVCY1x0267AKxVW0oV Cq3wAS0I0E0xvYzxvE52x082IY62kv0487Mc02F40EFcxC0VAKzVAqx4xG6I80ewAv7VC0 I7IYx2IY67AKxVWUtVWrXwAv7VC2z280aVAFwI0_Gr1j6F4UJwAm72CE4IkC6x0Yz7v_Jr 0_Gr1lF7xvr2IYc2Ij64vIr41lF7I21c0EjII2zVCS5cI20VAGYxC7M4IIrI8v6xkF7I0E 8cxan2IY04v7MxkF7I0En4kS14v26r4a6rW5MxAIw28IcxkI7VAKI48JMxC20s026xCaFV Cjc4AY6r1j6r4UMI8I3I0E5I8CrVAFwI0_Jr0_Jr4lx2IqxVCjr7xvwVAFwI0_JrI_JrWl x4CE17CEb7AF67AKxVW8ZVWrXwCIc40Y0x0EwIxGrwCI42IY6xIIjxv20xvE14v26r1I6r 4UMIIF0xvE2Ix0cI8IcVCY1x0267AKxVW8Jr0_Cr1UMIIF0xvE42xK8VAvwI8IcIk0rVWU JVWUCwCI42IY6I8E87Iv67AKxVWxJVW8Jr1lIxAIcVC2z280aVCY1x0267AKxVWxJr0_Gc JvcSsGvfC2KfnxnUUI43ZEXa7sRiNeOPUUUUU== X-CM-SenderInfo: pyxotu46lvutnvoduhdfq/1tbiBwEMA2qqQJWpwwAAs2 Content-Type: text/plain; charset="utf-8" imx8mp_hdmi_pvi_probe() takes a reference to the next bridge in the pipeline with of_drm_find_and_get_bridge() and stores it in pvi->bridge.next_bridge, but the reference is never released, leaking the bridge on driver unbind. Drop the reference in imx8mp_hdmi_pvi_remove() once the bridge has been unregistered. Fixes: 7654c807f207 ("drm/bridge: imx8mp-hdmi-pvi: convert to of_drm_find_a= nd_get_bridge()") Signed-off-by: Wentao Liang --- drivers/gpu/drm/bridge/imx/imx8mp-hdmi-pvi.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/gpu/drm/bridge/imx/imx8mp-hdmi-pvi.c b/drivers/gpu/drm= /bridge/imx/imx8mp-hdmi-pvi.c index 15fbb1be07cd..80e33d810a69 100644 --- a/drivers/gpu/drm/bridge/imx/imx8mp-hdmi-pvi.c +++ b/drivers/gpu/drm/bridge/imx/imx8mp-hdmi-pvi.c @@ -179,6 +179,7 @@ static void imx8mp_hdmi_pvi_remove(struct platform_devi= ce *pdev) struct imx8mp_hdmi_pvi *pvi =3D platform_get_drvdata(pdev); =20 drm_bridge_remove(&pvi->bridge); + drm_bridge_put(pvi->bridge.next_bridge); =20 pm_runtime_disable(&pdev->dev); } --=20 2.34.1