From nobody Mon Feb 9 06:49:29 2026 Received: from m16.mail.163.com (m16.mail.163.com [117.135.210.4]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 00A612F1FF1; Wed, 8 Oct 2025 09:02:58 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=117.135.210.4 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1759914182; cv=none; b=Owu6JcJZisc2me9oEPnuX+eDGwOFuR7CHKZPRMIWpOiWyVHq421y38LmdN65CD8fYhTo3tTJ+MFjen63ZK17wGC0cIiT55THovzI0J67XbG19cmk50yMpI0AvIYP1pz/VQPIYS/pExDP30oUsgLbVWJt/0BssAm+QhExD6FfzAE= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1759914182; c=relaxed/simple; bh=+nkPQZUQSb0PgsQ5xOnJztmLwWFjLlTCcnmJL/iTJnQ=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=AdJlxFVBgVI61MfUa2PRclL1Dh1+R6pAcYiw9jQ+VpeXEW4ViO6AOBs/B+6T+WkjzTV/DqkHCVLG2c+hbWzuNtNvbXSChvh8JnX3rGiSQkhtEilMv+ANbS2fuV0vpjA2+YQa4C4WiEZnyU/VpfPt/W8LnjaL8BjE5PS7pAeABoM= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=163.com; spf=pass smtp.mailfrom=163.com; dkim=pass (1024-bit key) header.d=163.com header.i=@163.com header.b=C8+wn5Y0; arc=none smtp.client-ip=117.135.210.4 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=163.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=163.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=163.com header.i=@163.com header.b="C8+wn5Y0" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=163.com; s=s110527; h=From:To:Subject:Date:Message-Id:MIME-Version; bh=xA UvOUV3gFHnesCfh2XcNr/cWherRMTVqtwTY/kK+k0=; b=C8+wn5Y0YY+GdfcPMh YfUzG8+cedQbz8nRkNLrv7avUJChkPFhhX59OJzm2dKyWjpOXTue4PLLKxyAOCRB J79JYBuIMTuwOya/+qeXZLSwXmcent9n7vnBQT9lAFCJV/eBh8Vmi5X2r0wsi95b uISMKKHtBrhcoblUHoynfcMo4= Received: from localhost.localdomain (unknown []) by gzga-smtp-mtada-g1-0 (Coremail) with SMTP id _____wDXz2+GKOZozDEcCw--.44898S4; Wed, 08 Oct 2025 17:01:59 +0800 (CST) From: Haoxiang Li To: minghsiu.tsai@mediatek.com, houlong.wei@mediatek.com, andrew-ct.chen@mediatek.com, mchehab@kernel.org, matthias.bgg@gmail.com, angelogioacchino.delregno@collabora.com, hans.verkuil@cisco.com, christophe.jaillet@wanadoo.fr, nicolas@ndufresne.ca Cc: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, Haoxiang Li , stable@vger.kernel.org Subject: [PATCH] media: mtk-mdp: Fix a reference leak bug in mtk_mdp_remove() Date: Wed, 8 Oct 2025 17:01:56 +0800 Message-Id: <20251008090156.14224-1-haoxiang_li2024@163.com> X-Mailer: git-send-email 2.25.1 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: _____wDXz2+GKOZozDEcCw--.44898S4 X-Coremail-Antispam: 1Uf129KBjvdXoW7GF4kXF1fuF4rtFy5Gw4fuFg_yoWDurX_Jw 1v9FZ3Xr1fCFnYkr18trna9ry7tFZ3Kr4FyF1fKrsxX3yruF1jgrnFvFZ8Wr4DXanFvFyU JFWDWFWxurZxWjkaLaAFLSUrUUUUjb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUvcSsGvfC2KfnxnUUI43ZEXa7sRGtCcUUUUUU== X-CM-SenderInfo: xkdr5xpdqjszblsqjki6rwjhhfrp/1tbiOxDgbmjmIYqTMwAAsg Content-Type: text/plain; charset="utf-8" In mtk_mdp_probe(), vpu_get_plat_device() increases the reference count of the returned platform device. Add platform_device_put() to prevent reference leak. Fixes: c8eb2d7e8202 ("[media] media: Add Mediatek MDP Driver") Cc: stable@vger.kernel.org Signed-off-by: Haoxiang Li --- drivers/media/platform/mediatek/mdp/mtk_mdp_core.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/media/platform/mediatek/mdp/mtk_mdp_core.c b/drivers/m= edia/platform/mediatek/mdp/mtk_mdp_core.c index 80fdc6ff57e0..eb212ca1a083 100644 --- a/drivers/media/platform/mediatek/mdp/mtk_mdp_core.c +++ b/drivers/media/platform/mediatek/mdp/mtk_mdp_core.c @@ -242,6 +242,7 @@ static void mtk_mdp_remove(struct platform_device *pdev) =20 pm_runtime_disable(&pdev->dev); vb2_dma_contig_clear_max_seg_size(&pdev->dev); + platform_device_put(mdp->vpu_dev); mtk_mdp_unregister_m2m_device(mdp); v4l2_device_unregister(&mdp->v4l2_dev); =20 --=20 2.25.1